The Experts below are selected from a list of 2892 Experts worldwide ranked by ideXlab platform
Yongjin Li - One of the best experts on this subject based on the ideXlab platform.
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effects of surface structure and morphology of Nanoclays on the properties of jatropha curcas oil based waterborne polyurethane clay nanocomposites
Industrial & Engineering Chemistry Research, 2016Co-Authors: Lingyuan Liao, Yin Wang, X Q Li, Heqing Fu, Yongjin LiAbstract:Three kinds of Nanoclays with different structure and morphology were modified by γ-aminopropyltriethoxysilane (APTES) and then incorporated into Jatropha oil-based waterborne polyurethane (WPU) matrix via in situ polymerization. The effects of surface structure and morphology of nanoclay on the degree of silylation were characterized by Fourier transform infrared spectroscopy (FTIR) and thermogravimetry analysis (TGA). The results showed that the montmorillonite (MT) with abundant hydroxyl group structure and platelet-like morphology had the highest degree of silylation, while the modified halloysite nanotubes (HT) had the lowest grafting ratio. The effects of different silylated clays on the properties of WPU/clay nanocomposites were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), TGA, dynamic thermomechanical analysis (DMA) and tensile testing machine. SEM images showed that all silylated clays had good compatibility with WPU and were uniformly dispersed into the polymer m...
Lingyuan Liao - One of the best experts on this subject based on the ideXlab platform.
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effects of surface structure and morphology of Nanoclays on the properties of jatropha curcas oil based waterborne polyurethane clay nanocomposites
Industrial & Engineering Chemistry Research, 2016Co-Authors: Lingyuan Liao, Yin Wang, X Q Li, Heqing Fu, Yongjin LiAbstract:Three kinds of Nanoclays with different structure and morphology were modified by γ-aminopropyltriethoxysilane (APTES) and then incorporated into Jatropha oil-based waterborne polyurethane (WPU) matrix via in situ polymerization. The effects of surface structure and morphology of nanoclay on the degree of silylation were characterized by Fourier transform infrared spectroscopy (FTIR) and thermogravimetry analysis (TGA). The results showed that the montmorillonite (MT) with abundant hydroxyl group structure and platelet-like morphology had the highest degree of silylation, while the modified halloysite nanotubes (HT) had the lowest grafting ratio. The effects of different silylated clays on the properties of WPU/clay nanocomposites were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), TGA, dynamic thermomechanical analysis (DMA) and tensile testing machine. SEM images showed that all silylated clays had good compatibility with WPU and were uniformly dispersed into the polymer m...
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Effects of Surface Structure and Morphology of Nanoclays on the Properties of Jatropha Curcas Oil-Based Waterborne Polyurethane/Clay Nanocomposites
2016Co-Authors: Lingyuan Liao, Yin WangAbstract:Three kinds of Nanoclays with different structure and morphology were modified by γ-aminopropyltriethoxysilane (APTES) and then incorporated into Jatropha oil-based waterborne polyurethane (WPU) matrix via in situ polymerization. The effects of surface structure and morphology of nanoclay on the degree of silylation were characterized by Fourier transform infrared spectroscopy (FTIR) and thermogravimetry analysis (TGA). The results showed that the montmorillonite (MT) with abundant hydroxyl group structure and platelet-like morphology had the highest degree of silylation, while the modified halloysite nanotubes (HT) had the lowest grafting ratio. The effects of different silylated clays on the properties of WPU/clay nanocomposites were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), TGA, dynamic thermomechanical analysis (DMA) and tensile testing machine. SEM images showed that all silylated clays had good compatibility with WPU and were uniformly dispersed into the polymer matrix. WPU/SMT exhibited the best thermal properties owing to its intercalated structure. Dynamic thermomechanical analysis (DMA), atomic force microscope (AFM), and water contact angle results demonstrated that the silylated Nanoclays enhanced the degree of microphase separation, surface roughness, and hydrophobicity of WPU/clay nanocomposites
Yin Wang - One of the best experts on this subject based on the ideXlab platform.
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effects of surface structure and morphology of Nanoclays on the properties of jatropha curcas oil based waterborne polyurethane clay nanocomposites
Industrial & Engineering Chemistry Research, 2016Co-Authors: Lingyuan Liao, Yin Wang, X Q Li, Heqing Fu, Yongjin LiAbstract:Three kinds of Nanoclays with different structure and morphology were modified by γ-aminopropyltriethoxysilane (APTES) and then incorporated into Jatropha oil-based waterborne polyurethane (WPU) matrix via in situ polymerization. The effects of surface structure and morphology of nanoclay on the degree of silylation were characterized by Fourier transform infrared spectroscopy (FTIR) and thermogravimetry analysis (TGA). The results showed that the montmorillonite (MT) with abundant hydroxyl group structure and platelet-like morphology had the highest degree of silylation, while the modified halloysite nanotubes (HT) had the lowest grafting ratio. The effects of different silylated clays on the properties of WPU/clay nanocomposites were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), TGA, dynamic thermomechanical analysis (DMA) and tensile testing machine. SEM images showed that all silylated clays had good compatibility with WPU and were uniformly dispersed into the polymer m...
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Effects of Surface Structure and Morphology of Nanoclays on the Properties of Jatropha Curcas Oil-Based Waterborne Polyurethane/Clay Nanocomposites
2016Co-Authors: Lingyuan Liao, Yin WangAbstract:Three kinds of Nanoclays with different structure and morphology were modified by γ-aminopropyltriethoxysilane (APTES) and then incorporated into Jatropha oil-based waterborne polyurethane (WPU) matrix via in situ polymerization. The effects of surface structure and morphology of nanoclay on the degree of silylation were characterized by Fourier transform infrared spectroscopy (FTIR) and thermogravimetry analysis (TGA). The results showed that the montmorillonite (MT) with abundant hydroxyl group structure and platelet-like morphology had the highest degree of silylation, while the modified halloysite nanotubes (HT) had the lowest grafting ratio. The effects of different silylated clays on the properties of WPU/clay nanocomposites were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), TGA, dynamic thermomechanical analysis (DMA) and tensile testing machine. SEM images showed that all silylated clays had good compatibility with WPU and were uniformly dispersed into the polymer matrix. WPU/SMT exhibited the best thermal properties owing to its intercalated structure. Dynamic thermomechanical analysis (DMA), atomic force microscope (AFM), and water contact angle results demonstrated that the silylated Nanoclays enhanced the degree of microphase separation, surface roughness, and hydrophobicity of WPU/clay nanocomposites
Raphael Cretois - One of the best experts on this subject based on the ideXlab platform.
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microstructure and barrier properties of phbv organoclays bionanocomposites
Journal of Membrane Science, 2014Co-Authors: Raphael Cretois, Nadege Follain, Eric Dargent, Jeremie Soulestin, Serge Bourbigot, Stephane MaraisAbstract:Abstract The impact of organomodified montmorillonite on morphology, thermal and barrier properties of PHBV-based nanocomposites prepared by melt intercalation was investigated. XRD analyses and TEM observations have shown the presence of aggregated and intercalated structures with individual nanoclay platelets and a significant orientation of Nanoclays into the nanocomposites. No nucleating effect induced by Nanoclays was detected in DSC measurements, which indicates that the crystalline phase of the PHBV copolymer was not impacted. The improvement of barrier properties to gas and water was found to be dependent not only on the dispersion and orientation of Nanoclays but also the nature of permeated molecules, the quality of the matrix/Nanoclays interface and degradation effects induced during melting process. A competition between kinetic and thermodynamic contributions of the permeation process was highlighted. A dependence of the water diffusion coefficient with water concentration was observed as a result of water plasticization effect.
X Q Li - One of the best experts on this subject based on the ideXlab platform.
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effects of surface structure and morphology of Nanoclays on the properties of jatropha curcas oil based waterborne polyurethane clay nanocomposites
Industrial & Engineering Chemistry Research, 2016Co-Authors: Lingyuan Liao, Yin Wang, X Q Li, Heqing Fu, Yongjin LiAbstract:Three kinds of Nanoclays with different structure and morphology were modified by γ-aminopropyltriethoxysilane (APTES) and then incorporated into Jatropha oil-based waterborne polyurethane (WPU) matrix via in situ polymerization. The effects of surface structure and morphology of nanoclay on the degree of silylation were characterized by Fourier transform infrared spectroscopy (FTIR) and thermogravimetry analysis (TGA). The results showed that the montmorillonite (MT) with abundant hydroxyl group structure and platelet-like morphology had the highest degree of silylation, while the modified halloysite nanotubes (HT) had the lowest grafting ratio. The effects of different silylated clays on the properties of WPU/clay nanocomposites were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), TGA, dynamic thermomechanical analysis (DMA) and tensile testing machine. SEM images showed that all silylated clays had good compatibility with WPU and were uniformly dispersed into the polymer m...
