The Experts below are selected from a list of 315 Experts worldwide ranked by ideXlab platform
Liqun Zhang - One of the best experts on this subject based on the ideXlab platform.
-
enhanced interfacial interaction and excellent performance of silica Epoxy Group functionalized styrene butadiene rubber sbr nanocomposites without any coupling agent
Composites Part B-engineering, 2017Co-Authors: He Qiao, Mingyuan Chao, Junchi Zheng, Xinxin Zhou, Runguo Wang, Liqun ZhangAbstract:Abstract Epoxy Group-functionalized styrene-butadiene rubbers (G-ESBRs) with different Epoxy Group contents were synthesized through emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer, and the silica/G-ESBR nanocomposites without silane coupling agents were prepared. The covalent bonding interfaces, resulting from a ring-opening reaction between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of G-ESBR, were formed during the preparation of the silica/G-ESBR nanocomposites. By increasing the Epoxy Group content, the number of covalent bonds at the interface increases, contributing to an improvement of the interfacial interaction between the G-ESBR and silica and the dispersion of silica, which were verified and analyzed in detail by bound rubber measurement, transmission electron microscopy (TEM) and rubber process analyzer (RPA). The silica/G-ESBR nanocomposites with improved dispersion of silica and interfacial interaction showed decreased rolling resistance and increased wet skid resistance. The mechanical properties of the nanocomposites were greatly improved with increasing Epoxy Group contents. The highest tensile strength reached 29.4 MPa at a GMA content of 4.8 wt%, a 55.6% increase compared with that of the nanocomposite without Epoxy Group.
-
enhanced interfacial interaction and excellent performance of silica Epoxy Group functionalized styrene butadiene rubber sbr nanocomposites without any coupling agent
Composites Part B-engineering, 2017Co-Authors: He Qiao, Mingyuan Chao, Junchi Zheng, Xinxin Zhou, Runguo Wang, Liqun ZhangAbstract:Abstract Epoxy Group-functionalized styrene-butadiene rubbers (G-ESBRs) with different Epoxy Group contents were synthesized through emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer, and the silica/G-ESBR nanocomposites without silane coupling agents were prepared. The covalent bonding interfaces, resulting from a ring-opening reaction between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of G-ESBR, were formed during the preparation of the silica/G-ESBR nanocomposites. By increasing the Epoxy Group content, the number of covalent bonds at the interface increases, contributing to an improvement of the interfacial interaction between the G-ESBR and silica and the dispersion of silica, which were verified and analyzed in detail by bound rubber measurement, transmission electron microscopy (TEM) and rubber process analyzer (RPA). The silica/G-ESBR nanocomposites with improved dispersion of silica and interfacial interaction showed decreased rolling resistance and increased wet skid resistance. The mechanical properties of the nanocomposites were greatly improved with increasing Epoxy Group contents. The highest tensile strength reached 29.4 MPa at a GMA content of 4.8 wt%, a 55.6% increase compared with that of the nanocomposite without Epoxy Group.
-
Preparation and Performance of Silica/Epoxy Group-Functionalized Biobased Elastomer Nanocomposite
Industrial & Engineering Chemistry Research, 2017Co-Authors: He Qiao, Xinxin Zhou, Runguo Wang, Chao Mingyuan, Jun Liu, Weiwei Lei, Xu Wenji, Liqun ZhangAbstract:Epoxy Group-functionalized biobased elastomer poly(dibutyl itaconate-ter-isoprene-ter-glycidyl methacrylate) (PDBIIG) was synthesized via redox emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer. The silica/PDBIIG nanocomposite was prepared without adding silane coupling agents. The ring-opening reaction, which occurred between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of the PDBIIG chains during mixing and vulcanization, was confirmed via bound rubber tests and Fourier transform infrared spectroscopy. This reaction was facilitated through heat treatment at 150 °C effectively. The introduction of covalent bonds significantly improved the interfacial interaction and dispersion of silica, which was indicated by transmission electron microscopy and rubber process analyzer (RPA) results. With the same silica loading and compounding procedure, the inclusion of 3.7 wt % GMA increased the modulus at 100% strain by 150.0% and the modulus at 300% str...
-
preparation and performance of silica Epoxy Group functionalized biobased elastomer nanocomposite
Industrial & Engineering Chemistry Research, 2017Co-Authors: He Qiao, Mingyuan Chao, Xinxin Zhou, Runguo Wang, Jun Liu, Weiwei Lei, Liqun ZhangAbstract:Epoxy Group-functionalized biobased elastomer poly(dibutyl itaconate-ter-isoprene-ter-glycidyl methacrylate) (PDBIIG) was synthesized via redox emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer. The silica/PDBIIG nanocomposite was prepared without adding silane coupling agents. The ring-opening reaction, which occurred between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of the PDBIIG chains during mixing and vulcanization, was confirmed via bound rubber tests and Fourier transform infrared spectroscopy. This reaction was facilitated through heat treatment at 150 °C effectively. The introduction of covalent bonds significantly improved the interfacial interaction and dispersion of silica, which was indicated by transmission electron microscopy and rubber process analyzer (RPA) results. With the same silica loading and compounding procedure, the inclusion of 3.7 wt % GMA increased the modulus at 100% strain by 150.0% and the modulus at 300% str...
-
Enhanced interfacial interaction and excellent performance of silica/Epoxy Group-functionalized styrene-butadiene rubber (SBR) nanocomposites without any coupling agent
Composites Part B: Engineering, 2017Co-Authors: He Qiao, Junchi Zheng, Xinxin Zhou, Runguo Wang, Chao Mingyuan, David Hui, Jun Liu, Weiwei Lei, Liqun ZhangAbstract:Abstract Epoxy Group-functionalized styrene-butadiene rubbers (G-ESBRs) with different Epoxy Group contents were synthesized through emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer, and the silica/G-ESBR nanocomposites without silane coupling agents were prepared. The covalent bonding interfaces, resulting from a ring-opening reaction between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of G-ESBR, were formed during the preparation of the silica/G-ESBR nanocomposites. By increasing the Epoxy Group content, the number of covalent bonds at the interface increases, contributing to an improvement of the interfacial interaction between the G-ESBR and silica and the dispersion of silica, which were verified and analyzed in detail by bound rubber measurement, transmission electron microscopy (TEM) and rubber process analyzer (RPA). The silica/G-ESBR nanocomposites with improved dispersion of silica and interfacial interaction showed decreased rolling resistance and increased wet skid resistance. The mechanical properties of the nanocomposites were greatly improved with increasing Epoxy Group contents. The highest tensile strength reached 29.4 MPa at a GMA content of 4.8 wt%, a 55.6% increase compared with that of the nanocomposite without Epoxy Group.
He Qiao - One of the best experts on this subject based on the ideXlab platform.
-
enhanced interfacial interaction and excellent performance of silica Epoxy Group functionalized styrene butadiene rubber sbr nanocomposites without any coupling agent
Composites Part B-engineering, 2017Co-Authors: He Qiao, Mingyuan Chao, Junchi Zheng, Xinxin Zhou, Runguo Wang, Liqun ZhangAbstract:Abstract Epoxy Group-functionalized styrene-butadiene rubbers (G-ESBRs) with different Epoxy Group contents were synthesized through emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer, and the silica/G-ESBR nanocomposites without silane coupling agents were prepared. The covalent bonding interfaces, resulting from a ring-opening reaction between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of G-ESBR, were formed during the preparation of the silica/G-ESBR nanocomposites. By increasing the Epoxy Group content, the number of covalent bonds at the interface increases, contributing to an improvement of the interfacial interaction between the G-ESBR and silica and the dispersion of silica, which were verified and analyzed in detail by bound rubber measurement, transmission electron microscopy (TEM) and rubber process analyzer (RPA). The silica/G-ESBR nanocomposites with improved dispersion of silica and interfacial interaction showed decreased rolling resistance and increased wet skid resistance. The mechanical properties of the nanocomposites were greatly improved with increasing Epoxy Group contents. The highest tensile strength reached 29.4 MPa at a GMA content of 4.8 wt%, a 55.6% increase compared with that of the nanocomposite without Epoxy Group.
-
enhanced interfacial interaction and excellent performance of silica Epoxy Group functionalized styrene butadiene rubber sbr nanocomposites without any coupling agent
Composites Part B-engineering, 2017Co-Authors: He Qiao, Mingyuan Chao, Junchi Zheng, Xinxin Zhou, Runguo Wang, Liqun ZhangAbstract:Abstract Epoxy Group-functionalized styrene-butadiene rubbers (G-ESBRs) with different Epoxy Group contents were synthesized through emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer, and the silica/G-ESBR nanocomposites without silane coupling agents were prepared. The covalent bonding interfaces, resulting from a ring-opening reaction between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of G-ESBR, were formed during the preparation of the silica/G-ESBR nanocomposites. By increasing the Epoxy Group content, the number of covalent bonds at the interface increases, contributing to an improvement of the interfacial interaction between the G-ESBR and silica and the dispersion of silica, which were verified and analyzed in detail by bound rubber measurement, transmission electron microscopy (TEM) and rubber process analyzer (RPA). The silica/G-ESBR nanocomposites with improved dispersion of silica and interfacial interaction showed decreased rolling resistance and increased wet skid resistance. The mechanical properties of the nanocomposites were greatly improved with increasing Epoxy Group contents. The highest tensile strength reached 29.4 MPa at a GMA content of 4.8 wt%, a 55.6% increase compared with that of the nanocomposite without Epoxy Group.
-
Preparation and Performance of Silica/Epoxy Group-Functionalized Biobased Elastomer Nanocomposite
Industrial & Engineering Chemistry Research, 2017Co-Authors: He Qiao, Xinxin Zhou, Runguo Wang, Chao Mingyuan, Jun Liu, Weiwei Lei, Xu Wenji, Liqun ZhangAbstract:Epoxy Group-functionalized biobased elastomer poly(dibutyl itaconate-ter-isoprene-ter-glycidyl methacrylate) (PDBIIG) was synthesized via redox emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer. The silica/PDBIIG nanocomposite was prepared without adding silane coupling agents. The ring-opening reaction, which occurred between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of the PDBIIG chains during mixing and vulcanization, was confirmed via bound rubber tests and Fourier transform infrared spectroscopy. This reaction was facilitated through heat treatment at 150 °C effectively. The introduction of covalent bonds significantly improved the interfacial interaction and dispersion of silica, which was indicated by transmission electron microscopy and rubber process analyzer (RPA) results. With the same silica loading and compounding procedure, the inclusion of 3.7 wt % GMA increased the modulus at 100% strain by 150.0% and the modulus at 300% str...
-
preparation and performance of silica Epoxy Group functionalized biobased elastomer nanocomposite
Industrial & Engineering Chemistry Research, 2017Co-Authors: He Qiao, Mingyuan Chao, Xinxin Zhou, Runguo Wang, Jun Liu, Weiwei Lei, Liqun ZhangAbstract:Epoxy Group-functionalized biobased elastomer poly(dibutyl itaconate-ter-isoprene-ter-glycidyl methacrylate) (PDBIIG) was synthesized via redox emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer. The silica/PDBIIG nanocomposite was prepared without adding silane coupling agents. The ring-opening reaction, which occurred between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of the PDBIIG chains during mixing and vulcanization, was confirmed via bound rubber tests and Fourier transform infrared spectroscopy. This reaction was facilitated through heat treatment at 150 °C effectively. The introduction of covalent bonds significantly improved the interfacial interaction and dispersion of silica, which was indicated by transmission electron microscopy and rubber process analyzer (RPA) results. With the same silica loading and compounding procedure, the inclusion of 3.7 wt % GMA increased the modulus at 100% strain by 150.0% and the modulus at 300% str...
-
Enhanced interfacial interaction and excellent performance of silica/Epoxy Group-functionalized styrene-butadiene rubber (SBR) nanocomposites without any coupling agent
Composites Part B: Engineering, 2017Co-Authors: He Qiao, Junchi Zheng, Xinxin Zhou, Runguo Wang, Chao Mingyuan, David Hui, Jun Liu, Weiwei Lei, Liqun ZhangAbstract:Abstract Epoxy Group-functionalized styrene-butadiene rubbers (G-ESBRs) with different Epoxy Group contents were synthesized through emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer, and the silica/G-ESBR nanocomposites without silane coupling agents were prepared. The covalent bonding interfaces, resulting from a ring-opening reaction between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of G-ESBR, were formed during the preparation of the silica/G-ESBR nanocomposites. By increasing the Epoxy Group content, the number of covalent bonds at the interface increases, contributing to an improvement of the interfacial interaction between the G-ESBR and silica and the dispersion of silica, which were verified and analyzed in detail by bound rubber measurement, transmission electron microscopy (TEM) and rubber process analyzer (RPA). The silica/G-ESBR nanocomposites with improved dispersion of silica and interfacial interaction showed decreased rolling resistance and increased wet skid resistance. The mechanical properties of the nanocomposites were greatly improved with increasing Epoxy Group contents. The highest tensile strength reached 29.4 MPa at a GMA content of 4.8 wt%, a 55.6% increase compared with that of the nanocomposite without Epoxy Group.
Natalia V. Skorodumova - One of the best experts on this subject based on the ideXlab platform.
-
sodium storage via single Epoxy Group on graphene the role of surface doping
Electrochimica Acta, 2019Co-Authors: Natasa P Diklic, Ana S. Dobrota, Igor A. Pašti, Slavko Mentus, Börje Johansson, Natalia V. SkorodumovaAbstract:Due to its unique physical and chemical properties, graphene is being considered as a promising material for energy conversion and storage applications. Introduction of functional Groups and dopant ...
-
Sodium storage via single Epoxy Group on graphene - The role of surface doping
arXiv: Materials Science, 2018Co-Authors: Nataša P. Diklić, Ana S. Dobrota, Igor A. Pašti, Slavko Mentus, Börje Johansson, Natalia V. SkorodumovaAbstract:Due to its unique physical and chemical properties, graphene is being considered as a promising material for energy conversion and storage applications. Introduction of functional Groups and dopants on/in graphene is a useful strategy for tuning its properties. In order to fully exploit its potential, atomic-level understanding of its interaction with species of importance for such applications is required. We present a DFT study of the interaction of sodium atoms with Epoxy-graphene and analyze how this interaction is affected upon doping with boron and nitrogen. We demonstrate how the dopants, combined with oxygen-containing Groups alter the reactivity of graphene towards Na. Dopants act as attractors of Epoxy Groups, enhancing the sodium adsorption on doped oxygen-functionalized graphene when compared to the case of non-doped Epoxy-graphene. Furthermore, by considering thermodynamics of the Na interaction with doped Epoxy-graphene it has been concluded that such materials are good candidates for Na storage applications. Therefore, we suggest that controlled oxidation of doped carbon materials could lead to the development of advanced anode materials for rechargeable Na-ion batteries.
Xinxin Zhou - One of the best experts on this subject based on the ideXlab platform.
-
enhanced interfacial interaction and excellent performance of silica Epoxy Group functionalized styrene butadiene rubber sbr nanocomposites without any coupling agent
Composites Part B-engineering, 2017Co-Authors: He Qiao, Mingyuan Chao, Junchi Zheng, Xinxin Zhou, Runguo Wang, Liqun ZhangAbstract:Abstract Epoxy Group-functionalized styrene-butadiene rubbers (G-ESBRs) with different Epoxy Group contents were synthesized through emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer, and the silica/G-ESBR nanocomposites without silane coupling agents were prepared. The covalent bonding interfaces, resulting from a ring-opening reaction between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of G-ESBR, were formed during the preparation of the silica/G-ESBR nanocomposites. By increasing the Epoxy Group content, the number of covalent bonds at the interface increases, contributing to an improvement of the interfacial interaction between the G-ESBR and silica and the dispersion of silica, which were verified and analyzed in detail by bound rubber measurement, transmission electron microscopy (TEM) and rubber process analyzer (RPA). The silica/G-ESBR nanocomposites with improved dispersion of silica and interfacial interaction showed decreased rolling resistance and increased wet skid resistance. The mechanical properties of the nanocomposites were greatly improved with increasing Epoxy Group contents. The highest tensile strength reached 29.4 MPa at a GMA content of 4.8 wt%, a 55.6% increase compared with that of the nanocomposite without Epoxy Group.
-
enhanced interfacial interaction and excellent performance of silica Epoxy Group functionalized styrene butadiene rubber sbr nanocomposites without any coupling agent
Composites Part B-engineering, 2017Co-Authors: He Qiao, Mingyuan Chao, Junchi Zheng, Xinxin Zhou, Runguo Wang, Liqun ZhangAbstract:Abstract Epoxy Group-functionalized styrene-butadiene rubbers (G-ESBRs) with different Epoxy Group contents were synthesized through emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer, and the silica/G-ESBR nanocomposites without silane coupling agents were prepared. The covalent bonding interfaces, resulting from a ring-opening reaction between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of G-ESBR, were formed during the preparation of the silica/G-ESBR nanocomposites. By increasing the Epoxy Group content, the number of covalent bonds at the interface increases, contributing to an improvement of the interfacial interaction between the G-ESBR and silica and the dispersion of silica, which were verified and analyzed in detail by bound rubber measurement, transmission electron microscopy (TEM) and rubber process analyzer (RPA). The silica/G-ESBR nanocomposites with improved dispersion of silica and interfacial interaction showed decreased rolling resistance and increased wet skid resistance. The mechanical properties of the nanocomposites were greatly improved with increasing Epoxy Group contents. The highest tensile strength reached 29.4 MPa at a GMA content of 4.8 wt%, a 55.6% increase compared with that of the nanocomposite without Epoxy Group.
-
Preparation and Performance of Silica/Epoxy Group-Functionalized Biobased Elastomer Nanocomposite
Industrial & Engineering Chemistry Research, 2017Co-Authors: He Qiao, Xinxin Zhou, Runguo Wang, Chao Mingyuan, Jun Liu, Weiwei Lei, Xu Wenji, Liqun ZhangAbstract:Epoxy Group-functionalized biobased elastomer poly(dibutyl itaconate-ter-isoprene-ter-glycidyl methacrylate) (PDBIIG) was synthesized via redox emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer. The silica/PDBIIG nanocomposite was prepared without adding silane coupling agents. The ring-opening reaction, which occurred between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of the PDBIIG chains during mixing and vulcanization, was confirmed via bound rubber tests and Fourier transform infrared spectroscopy. This reaction was facilitated through heat treatment at 150 °C effectively. The introduction of covalent bonds significantly improved the interfacial interaction and dispersion of silica, which was indicated by transmission electron microscopy and rubber process analyzer (RPA) results. With the same silica loading and compounding procedure, the inclusion of 3.7 wt % GMA increased the modulus at 100% strain by 150.0% and the modulus at 300% str...
-
preparation and performance of silica Epoxy Group functionalized biobased elastomer nanocomposite
Industrial & Engineering Chemistry Research, 2017Co-Authors: He Qiao, Mingyuan Chao, Xinxin Zhou, Runguo Wang, Jun Liu, Weiwei Lei, Liqun ZhangAbstract:Epoxy Group-functionalized biobased elastomer poly(dibutyl itaconate-ter-isoprene-ter-glycidyl methacrylate) (PDBIIG) was synthesized via redox emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer. The silica/PDBIIG nanocomposite was prepared without adding silane coupling agents. The ring-opening reaction, which occurred between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of the PDBIIG chains during mixing and vulcanization, was confirmed via bound rubber tests and Fourier transform infrared spectroscopy. This reaction was facilitated through heat treatment at 150 °C effectively. The introduction of covalent bonds significantly improved the interfacial interaction and dispersion of silica, which was indicated by transmission electron microscopy and rubber process analyzer (RPA) results. With the same silica loading and compounding procedure, the inclusion of 3.7 wt % GMA increased the modulus at 100% strain by 150.0% and the modulus at 300% str...
-
Enhanced interfacial interaction and excellent performance of silica/Epoxy Group-functionalized styrene-butadiene rubber (SBR) nanocomposites without any coupling agent
Composites Part B: Engineering, 2017Co-Authors: He Qiao, Junchi Zheng, Xinxin Zhou, Runguo Wang, Chao Mingyuan, David Hui, Jun Liu, Weiwei Lei, Liqun ZhangAbstract:Abstract Epoxy Group-functionalized styrene-butadiene rubbers (G-ESBRs) with different Epoxy Group contents were synthesized through emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer, and the silica/G-ESBR nanocomposites without silane coupling agents were prepared. The covalent bonding interfaces, resulting from a ring-opening reaction between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of G-ESBR, were formed during the preparation of the silica/G-ESBR nanocomposites. By increasing the Epoxy Group content, the number of covalent bonds at the interface increases, contributing to an improvement of the interfacial interaction between the G-ESBR and silica and the dispersion of silica, which were verified and analyzed in detail by bound rubber measurement, transmission electron microscopy (TEM) and rubber process analyzer (RPA). The silica/G-ESBR nanocomposites with improved dispersion of silica and interfacial interaction showed decreased rolling resistance and increased wet skid resistance. The mechanical properties of the nanocomposites were greatly improved with increasing Epoxy Group contents. The highest tensile strength reached 29.4 MPa at a GMA content of 4.8 wt%, a 55.6% increase compared with that of the nanocomposite without Epoxy Group.
Runguo Wang - One of the best experts on this subject based on the ideXlab platform.
-
enhanced interfacial interaction and excellent performance of silica Epoxy Group functionalized styrene butadiene rubber sbr nanocomposites without any coupling agent
Composites Part B-engineering, 2017Co-Authors: He Qiao, Mingyuan Chao, Junchi Zheng, Xinxin Zhou, Runguo Wang, Liqun ZhangAbstract:Abstract Epoxy Group-functionalized styrene-butadiene rubbers (G-ESBRs) with different Epoxy Group contents were synthesized through emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer, and the silica/G-ESBR nanocomposites without silane coupling agents were prepared. The covalent bonding interfaces, resulting from a ring-opening reaction between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of G-ESBR, were formed during the preparation of the silica/G-ESBR nanocomposites. By increasing the Epoxy Group content, the number of covalent bonds at the interface increases, contributing to an improvement of the interfacial interaction between the G-ESBR and silica and the dispersion of silica, which were verified and analyzed in detail by bound rubber measurement, transmission electron microscopy (TEM) and rubber process analyzer (RPA). The silica/G-ESBR nanocomposites with improved dispersion of silica and interfacial interaction showed decreased rolling resistance and increased wet skid resistance. The mechanical properties of the nanocomposites were greatly improved with increasing Epoxy Group contents. The highest tensile strength reached 29.4 MPa at a GMA content of 4.8 wt%, a 55.6% increase compared with that of the nanocomposite without Epoxy Group.
-
enhanced interfacial interaction and excellent performance of silica Epoxy Group functionalized styrene butadiene rubber sbr nanocomposites without any coupling agent
Composites Part B-engineering, 2017Co-Authors: He Qiao, Mingyuan Chao, Junchi Zheng, Xinxin Zhou, Runguo Wang, Liqun ZhangAbstract:Abstract Epoxy Group-functionalized styrene-butadiene rubbers (G-ESBRs) with different Epoxy Group contents were synthesized through emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer, and the silica/G-ESBR nanocomposites without silane coupling agents were prepared. The covalent bonding interfaces, resulting from a ring-opening reaction between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of G-ESBR, were formed during the preparation of the silica/G-ESBR nanocomposites. By increasing the Epoxy Group content, the number of covalent bonds at the interface increases, contributing to an improvement of the interfacial interaction between the G-ESBR and silica and the dispersion of silica, which were verified and analyzed in detail by bound rubber measurement, transmission electron microscopy (TEM) and rubber process analyzer (RPA). The silica/G-ESBR nanocomposites with improved dispersion of silica and interfacial interaction showed decreased rolling resistance and increased wet skid resistance. The mechanical properties of the nanocomposites were greatly improved with increasing Epoxy Group contents. The highest tensile strength reached 29.4 MPa at a GMA content of 4.8 wt%, a 55.6% increase compared with that of the nanocomposite without Epoxy Group.
-
Preparation and Performance of Silica/Epoxy Group-Functionalized Biobased Elastomer Nanocomposite
Industrial & Engineering Chemistry Research, 2017Co-Authors: He Qiao, Xinxin Zhou, Runguo Wang, Chao Mingyuan, Jun Liu, Weiwei Lei, Xu Wenji, Liqun ZhangAbstract:Epoxy Group-functionalized biobased elastomer poly(dibutyl itaconate-ter-isoprene-ter-glycidyl methacrylate) (PDBIIG) was synthesized via redox emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer. The silica/PDBIIG nanocomposite was prepared without adding silane coupling agents. The ring-opening reaction, which occurred between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of the PDBIIG chains during mixing and vulcanization, was confirmed via bound rubber tests and Fourier transform infrared spectroscopy. This reaction was facilitated through heat treatment at 150 °C effectively. The introduction of covalent bonds significantly improved the interfacial interaction and dispersion of silica, which was indicated by transmission electron microscopy and rubber process analyzer (RPA) results. With the same silica loading and compounding procedure, the inclusion of 3.7 wt % GMA increased the modulus at 100% strain by 150.0% and the modulus at 300% str...
-
preparation and performance of silica Epoxy Group functionalized biobased elastomer nanocomposite
Industrial & Engineering Chemistry Research, 2017Co-Authors: He Qiao, Mingyuan Chao, Xinxin Zhou, Runguo Wang, Jun Liu, Weiwei Lei, Liqun ZhangAbstract:Epoxy Group-functionalized biobased elastomer poly(dibutyl itaconate-ter-isoprene-ter-glycidyl methacrylate) (PDBIIG) was synthesized via redox emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer. The silica/PDBIIG nanocomposite was prepared without adding silane coupling agents. The ring-opening reaction, which occurred between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of the PDBIIG chains during mixing and vulcanization, was confirmed via bound rubber tests and Fourier transform infrared spectroscopy. This reaction was facilitated through heat treatment at 150 °C effectively. The introduction of covalent bonds significantly improved the interfacial interaction and dispersion of silica, which was indicated by transmission electron microscopy and rubber process analyzer (RPA) results. With the same silica loading and compounding procedure, the inclusion of 3.7 wt % GMA increased the modulus at 100% strain by 150.0% and the modulus at 300% str...
-
Enhanced interfacial interaction and excellent performance of silica/Epoxy Group-functionalized styrene-butadiene rubber (SBR) nanocomposites without any coupling agent
Composites Part B: Engineering, 2017Co-Authors: He Qiao, Junchi Zheng, Xinxin Zhou, Runguo Wang, Chao Mingyuan, David Hui, Jun Liu, Weiwei Lei, Liqun ZhangAbstract:Abstract Epoxy Group-functionalized styrene-butadiene rubbers (G-ESBRs) with different Epoxy Group contents were synthesized through emulsion polymerization using glycidyl methacrylate (GMA) as the Epoxy Group-included monomer, and the silica/G-ESBR nanocomposites without silane coupling agents were prepared. The covalent bonding interfaces, resulting from a ring-opening reaction between the hydroxyl Groups on the silica surfaces and the Epoxy Groups of G-ESBR, were formed during the preparation of the silica/G-ESBR nanocomposites. By increasing the Epoxy Group content, the number of covalent bonds at the interface increases, contributing to an improvement of the interfacial interaction between the G-ESBR and silica and the dispersion of silica, which were verified and analyzed in detail by bound rubber measurement, transmission electron microscopy (TEM) and rubber process analyzer (RPA). The silica/G-ESBR nanocomposites with improved dispersion of silica and interfacial interaction showed decreased rolling resistance and increased wet skid resistance. The mechanical properties of the nanocomposites were greatly improved with increasing Epoxy Group contents. The highest tensile strength reached 29.4 MPa at a GMA content of 4.8 wt%, a 55.6% increase compared with that of the nanocomposite without Epoxy Group.