The Experts below are selected from a list of 42090 Experts worldwide ranked by ideXlab platform
Honglin Hu - One of the best experts on this subject based on the ideXlab platform.
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surface modification of self healing poly urea formaldehyde microcapsules using silane Coupling Agent
Applied Surface Science, 2008Co-Authors: Haiyan Li, Rongguo Wang, Honglin HuAbstract:Abstract Poly(urea-formaldehyde) (PUF) microcapsules, which are used as self-healing component of fibre reinforced resin matrix composites, were prepared by in situ polymerization method. The surface of PUF microcapsules was modified by using 3-aminopropyltriethoxy silane-Coupling Agent (KH550), and the interfacial interactions between PUF microcapsules and KH550 was also studied. Fourier transform infrared spectra (FT-IR) and X-ray photoelectron spectra (XPS) analyses showed that the silane-Coupling Agent molecular binds strongly to PUF microcapsules surface. Chemical bond (Si–O–C) was formed by the reaction between Si–OH and the hydroxyl group of PUF microcapsules, also there have chemical adsorption effect in the interface simultaneously because of the existence of hydrogen bond between Si–OH and the hydroxyl group of PUF microcapsules. Scanning electronic microscopy (SEM) observation showed that a thin layer was formed on the surface of modified PUF microcapsules. Additionally, fractured surface were observed under SEM to investigate the interfacial adhesion effect between PUF microcapsules and epoxy matrix. The result indicted that the silane-Coupling Agent play an important role in improving the interfacial performance between microcapsules and resin matrix.
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Surface modification of self-healing poly(urea-formaldehyde) microcapsules using silane-Coupling Agent
Applied Surface Science, 2008Co-Authors: Haiyan Li, Rongguo Wang, Honglin Hu, Wenbo LiuAbstract:Poly(urea-formaldehyde) (PUF) microcapsules, which are used as self-healing component of fibre reinforced resin matrix composites, were prepared by in situ polymerization method. The surface of PUF microcapsules was modified by using 3-aminopropyltriethoxy silane-Coupling Agent (KH550), and the interfacial interactions between PUF microcapsules and KH550 was also studied. Fourier transform infrared spectra (FT-IR) and X-ray photoelectron spectra (XPS) analyses showed that the silane-Coupling Agent molecular binds strongly to PUF microcapsules surface. Chemical bond (Si-O-C) was formed by the reaction between Si-OH and the hydroxyl group of PUF microcapsules, also there have chemical adsorption effect in the interface simultaneously because of the existence of hydrogen bond between Si-OH and the hydroxyl group of PUF microcapsules. Scanning electronic microscopy (SEM) observation showed that a thin layer was formed on the surface of modified PUF microcapsules. Additionally, fractured surface were observed under SEM to investigate the interfacial adhesion effect between PUF microcapsules and epoxy matrix. The result indicted that the silane-Coupling Agent play an important role in improving the interfacial performance between microcapsules and resin matrix. ?? 2008 Elsevier B.V. All rights reserved.
Haiyan Li - One of the best experts on this subject based on the ideXlab platform.
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surface modification of self healing poly urea formaldehyde microcapsules using silane Coupling Agent
Applied Surface Science, 2008Co-Authors: Haiyan Li, Rongguo Wang, Honglin HuAbstract:Abstract Poly(urea-formaldehyde) (PUF) microcapsules, which are used as self-healing component of fibre reinforced resin matrix composites, were prepared by in situ polymerization method. The surface of PUF microcapsules was modified by using 3-aminopropyltriethoxy silane-Coupling Agent (KH550), and the interfacial interactions between PUF microcapsules and KH550 was also studied. Fourier transform infrared spectra (FT-IR) and X-ray photoelectron spectra (XPS) analyses showed that the silane-Coupling Agent molecular binds strongly to PUF microcapsules surface. Chemical bond (Si–O–C) was formed by the reaction between Si–OH and the hydroxyl group of PUF microcapsules, also there have chemical adsorption effect in the interface simultaneously because of the existence of hydrogen bond between Si–OH and the hydroxyl group of PUF microcapsules. Scanning electronic microscopy (SEM) observation showed that a thin layer was formed on the surface of modified PUF microcapsules. Additionally, fractured surface were observed under SEM to investigate the interfacial adhesion effect between PUF microcapsules and epoxy matrix. The result indicted that the silane-Coupling Agent play an important role in improving the interfacial performance between microcapsules and resin matrix.
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Surface modification of self-healing poly(urea-formaldehyde) microcapsules using silane-Coupling Agent
Applied Surface Science, 2008Co-Authors: Haiyan Li, Rongguo Wang, Honglin Hu, Wenbo LiuAbstract:Poly(urea-formaldehyde) (PUF) microcapsules, which are used as self-healing component of fibre reinforced resin matrix composites, were prepared by in situ polymerization method. The surface of PUF microcapsules was modified by using 3-aminopropyltriethoxy silane-Coupling Agent (KH550), and the interfacial interactions between PUF microcapsules and KH550 was also studied. Fourier transform infrared spectra (FT-IR) and X-ray photoelectron spectra (XPS) analyses showed that the silane-Coupling Agent molecular binds strongly to PUF microcapsules surface. Chemical bond (Si-O-C) was formed by the reaction between Si-OH and the hydroxyl group of PUF microcapsules, also there have chemical adsorption effect in the interface simultaneously because of the existence of hydrogen bond between Si-OH and the hydroxyl group of PUF microcapsules. Scanning electronic microscopy (SEM) observation showed that a thin layer was formed on the surface of modified PUF microcapsules. Additionally, fractured surface were observed under SEM to investigate the interfacial adhesion effect between PUF microcapsules and epoxy matrix. The result indicted that the silane-Coupling Agent play an important role in improving the interfacial performance between microcapsules and resin matrix. ?? 2008 Elsevier B.V. All rights reserved.
Xiuyong Shang - One of the best experts on this subject based on the ideXlab platform.
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compatibility of soluble polyimide silica hybrids induced by a Coupling Agent
Chemistry of Materials, 2002Co-Authors: Xiuyong ShangAbstract:In this paper, a new type of soluble polyimide/silica (PI/SiO2) hybrid was prepared by the sol−gel process. The Coupling Agent γ-glycidyloxypropyltrimethoxysilane (GOTMS) was chosen to enhance the compatibility between the polyimide (PI) and silica (SiO2). Furthermore, the effects of the Coupling Agent on the morphologies and properties of the PI/SiO2 hybrids were investigated using UV−vis and FTIR spectroscopies and SEM. The densities and solubilities of the PI/SiO2 hybrids were also measured. The results show that the size of the silica particle was markedly reduced by the introduction of the Coupling Agent, which made the PI/SiO2 hybrid films become transparent. The solubility of the PI/SiO2 hybrid was also improved by the Coupling Agent. In addition, all of these effects became even more pronounced with increased amounts of the Coupling Agent. The thermal properties of the compatibilized PI/SiO2 hybrids were investigated by DSC and TGA. Moreover, their mechanical properties were also characterized. Th...
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Compatibility of soluble polyimide/silica hybrids induced by a Coupling Agent
Chemistry of Materials, 2002Co-Authors: Xiuyong Shang, Xiaodong MaAbstract:In this paper, a new type of soluble polyimide/silica (PI/SiO2) hybrid was prepared by the sol−gel process. The Coupling Agent γ-glycidyloxypropyltrimethoxysilane (GOTMS) was chosen to enhance the compatibility between the polyimide (PI) and silica (SiO2). Furthermore, the effects of the Coupling Agent on the morphologies and properties of the PI/SiO2 hybrids were investigated using UV−vis and FTIR spectroscopies and SEM. The densities and solubilities of the PI/SiO2 hybrids were also measured. The results show that the size of the silica particle was markedly reduced by the introduction of the Coupling Agent, which made the PI/SiO2 hybrid films become transparent. The solubility of the PI/SiO2 hybrid was also improved by the Coupling Agent. In addition, all of these effects became even more pronounced with increased amounts of the Coupling Agent. The thermal properties of the compatibilized PI/SiO2 hybrids were investigated by DSC and TGA. Moreover, their mechanical properties were also characterized. Th...
Wenbo Liu - One of the best experts on this subject based on the ideXlab platform.
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Surface modification of self-healing poly(urea-formaldehyde) microcapsules using silane-Coupling Agent
Applied Surface Science, 2008Co-Authors: Haiyan Li, Rongguo Wang, Honglin Hu, Wenbo LiuAbstract:Poly(urea-formaldehyde) (PUF) microcapsules, which are used as self-healing component of fibre reinforced resin matrix composites, were prepared by in situ polymerization method. The surface of PUF microcapsules was modified by using 3-aminopropyltriethoxy silane-Coupling Agent (KH550), and the interfacial interactions between PUF microcapsules and KH550 was also studied. Fourier transform infrared spectra (FT-IR) and X-ray photoelectron spectra (XPS) analyses showed that the silane-Coupling Agent molecular binds strongly to PUF microcapsules surface. Chemical bond (Si-O-C) was formed by the reaction between Si-OH and the hydroxyl group of PUF microcapsules, also there have chemical adsorption effect in the interface simultaneously because of the existence of hydrogen bond between Si-OH and the hydroxyl group of PUF microcapsules. Scanning electronic microscopy (SEM) observation showed that a thin layer was formed on the surface of modified PUF microcapsules. Additionally, fractured surface were observed under SEM to investigate the interfacial adhesion effect between PUF microcapsules and epoxy matrix. The result indicted that the silane-Coupling Agent play an important role in improving the interfacial performance between microcapsules and resin matrix. ?? 2008 Elsevier B.V. All rights reserved.
Rongguo Wang - One of the best experts on this subject based on the ideXlab platform.
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surface modification of self healing poly urea formaldehyde microcapsules using silane Coupling Agent
Applied Surface Science, 2008Co-Authors: Haiyan Li, Rongguo Wang, Honglin HuAbstract:Abstract Poly(urea-formaldehyde) (PUF) microcapsules, which are used as self-healing component of fibre reinforced resin matrix composites, were prepared by in situ polymerization method. The surface of PUF microcapsules was modified by using 3-aminopropyltriethoxy silane-Coupling Agent (KH550), and the interfacial interactions between PUF microcapsules and KH550 was also studied. Fourier transform infrared spectra (FT-IR) and X-ray photoelectron spectra (XPS) analyses showed that the silane-Coupling Agent molecular binds strongly to PUF microcapsules surface. Chemical bond (Si–O–C) was formed by the reaction between Si–OH and the hydroxyl group of PUF microcapsules, also there have chemical adsorption effect in the interface simultaneously because of the existence of hydrogen bond between Si–OH and the hydroxyl group of PUF microcapsules. Scanning electronic microscopy (SEM) observation showed that a thin layer was formed on the surface of modified PUF microcapsules. Additionally, fractured surface were observed under SEM to investigate the interfacial adhesion effect between PUF microcapsules and epoxy matrix. The result indicted that the silane-Coupling Agent play an important role in improving the interfacial performance between microcapsules and resin matrix.
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Surface modification of self-healing poly(urea-formaldehyde) microcapsules using silane-Coupling Agent
Applied Surface Science, 2008Co-Authors: Haiyan Li, Rongguo Wang, Honglin Hu, Wenbo LiuAbstract:Poly(urea-formaldehyde) (PUF) microcapsules, which are used as self-healing component of fibre reinforced resin matrix composites, were prepared by in situ polymerization method. The surface of PUF microcapsules was modified by using 3-aminopropyltriethoxy silane-Coupling Agent (KH550), and the interfacial interactions between PUF microcapsules and KH550 was also studied. Fourier transform infrared spectra (FT-IR) and X-ray photoelectron spectra (XPS) analyses showed that the silane-Coupling Agent molecular binds strongly to PUF microcapsules surface. Chemical bond (Si-O-C) was formed by the reaction between Si-OH and the hydroxyl group of PUF microcapsules, also there have chemical adsorption effect in the interface simultaneously because of the existence of hydrogen bond between Si-OH and the hydroxyl group of PUF microcapsules. Scanning electronic microscopy (SEM) observation showed that a thin layer was formed on the surface of modified PUF microcapsules. Additionally, fractured surface were observed under SEM to investigate the interfacial adhesion effect between PUF microcapsules and epoxy matrix. The result indicted that the silane-Coupling Agent play an important role in improving the interfacial performance between microcapsules and resin matrix. ?? 2008 Elsevier B.V. All rights reserved.
