Results 151 to 160 of about 6,327 (185)
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Journal of Materials Chemistry A, 2013
Hydrogen production through water electrolysis calls for a low-cost non-fluoro membrane to make the process economically viable due to the high cost and environmental concerns of the current fluorinated ionomers. Here, we present such an ionomer with high proton conductivity based on the hybrid of commercially available poly(styrene-co-maleic anhydride)
Huang-Ming Hsu +5 more
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Hydrogen production through water electrolysis calls for a low-cost non-fluoro membrane to make the process economically viable due to the high cost and environmental concerns of the current fluorinated ionomers. Here, we present such an ionomer with high proton conductivity based on the hybrid of commercially available poly(styrene-co-maleic anhydride)
Huang-Ming Hsu +5 more
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Journal of Polymer Engineering, 2014
Abstract The properties of polyamide 6 (PA6)/poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) blends (60/40, wt%) compatibilized by poly(styrene-co-maleic anhydride) (SMA) were studied. The addition of SMA can form an in situ copolymer, SMA-graft-PA6. The SMA-graft-PA6 copolymer actually plays a key role as a compatibilizer to improve the interface between
Zhenghong Guo, Yu Shen, Zhengping Fang
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Abstract The properties of polyamide 6 (PA6)/poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) blends (60/40, wt%) compatibilized by poly(styrene-co-maleic anhydride) (SMA) were studied. The addition of SMA can form an in situ copolymer, SMA-graft-PA6. The SMA-graft-PA6 copolymer actually plays a key role as a compatibilizer to improve the interface between
Zhenghong Guo, Yu Shen, Zhengping Fang
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Negative Photoresist Materials Based on Poly(Norbornene Derivatives‐co‐styrene‐co‐maleic Anhydride)
Journal of Macromolecular Science, Part A, 2005Photosensitive polymers of norbornene‐co‐styrene‐co‐maleic anhydride with different mole ratios were synthesized as a polymer matrix for UV photoresist. These polymers were prepared by radical polymerization under controlled conditions. These polymers have a higher glass transition temperature than polystyrene and are chemically reactive with certain ...
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Rheologica Acta, 2002
We investigated the thermo- rheological behavior of high glass transition, high molecular weight and small dynamic asymmetry blends of poly(styrene-co-maleic anhydride) (SMA) and poly (methyl methacrylate) (PMMA) with varying amounts of maleic anhydride (MA) content, namely 8 wt%, 14 wt% and 32 wt%, in the SMA component.
Divya Chopra *, § , Marianna Kontop +2 more
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We investigated the thermo- rheological behavior of high glass transition, high molecular weight and small dynamic asymmetry blends of poly(styrene-co-maleic anhydride) (SMA) and poly (methyl methacrylate) (PMMA) with varying amounts of maleic anhydride (MA) content, namely 8 wt%, 14 wt% and 32 wt%, in the SMA component.
Divya Chopra *, § , Marianna Kontop +2 more
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Iranian Polymer Journal, 2012
The effects of polystyrene-co-maleic anhydride (SMA) compatibilizer on mechanical, thermal and morphological properties of polystyrene (PS)/zinc oxide (ZnO) composites were investigated for the first time in this study. PS/ZnO composites were prepared using a twin screw extruder and were then molded by compression method.
Sirirat Wacharawichanant +4 more
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The effects of polystyrene-co-maleic anhydride (SMA) compatibilizer on mechanical, thermal and morphological properties of polystyrene (PS)/zinc oxide (ZnO) composites were investigated for the first time in this study. PS/ZnO composites were prepared using a twin screw extruder and were then molded by compression method.
Sirirat Wacharawichanant +4 more
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Advanced Materials Research, 2011
Poly(styrene-co-maleic anhydride) nanofibers with a uniform diameter of about 400 nm were prepared by eletrospinning a solution containing 50 % (w/v) polymer and 1% (w/v) LiCl, 25 cm gap between jection needle tip and collector, a flow rate of 200 L/h, and an applied voltage of 24 kV. β-D-galactosidase was immobilized to the electrospun nanofibers and
Peng Ju Li +4 more
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Poly(styrene-co-maleic anhydride) nanofibers with a uniform diameter of about 400 nm were prepared by eletrospinning a solution containing 50 % (w/v) polymer and 1% (w/v) LiCl, 25 cm gap between jection needle tip and collector, a flow rate of 200 L/h, and an applied voltage of 24 kV. β-D-galactosidase was immobilized to the electrospun nanofibers and
Peng Ju Li +4 more
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Journal of Applied Polymer Science, 1997
In the present study, ethylene/vinyl alcohol (EVAL) copolymers with different hydroxyl contents were melt mixed with styrene/maleic anhydride (SMA) copolymers. These two copolymers have functional groups capable of reacting intermolecularly, giving stable products.
Ch. Tselios +3 more
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In the present study, ethylene/vinyl alcohol (EVAL) copolymers with different hydroxyl contents were melt mixed with styrene/maleic anhydride (SMA) copolymers. These two copolymers have functional groups capable of reacting intermolecularly, giving stable products.
Ch. Tselios +3 more
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Polymer Bulletin, 1992
The kinetics of the reaction between a styrene-maleic anhydride copolymer (SMA) and amines was investigated in tetrahydrofuran solution between 0°C and 40°C. This reaction converts the maleic anhydride (MA) into the corresponding amide-acid, while the consecutive reaction of the generated acid with amine forming a diamide or transformation of the acid ...
G. H. Hu, J. T. Lindt
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The kinetics of the reaction between a styrene-maleic anhydride copolymer (SMA) and amines was investigated in tetrahydrofuran solution between 0°C and 40°C. This reaction converts the maleic anhydride (MA) into the corresponding amide-acid, while the consecutive reaction of the generated acid with amine forming a diamide or transformation of the acid ...
G. H. Hu, J. T. Lindt
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Phase Behaviour of Poly(ethylene oxide)/Poly(styrene-co-maleic anhydride) Blends
Polymer International, 1997Thermal behaviour and morphology of blends of poly(ethylene oxide) (PEO) and poly(styrene-co-maleic anhydride) (SMA) prepared by the coprecipitation technique were studied by means of differential scanning calorimetry, optical microscopy and thermogravimetry.
Hasan A. Al‐Salah, Ali M. A. Qudah
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European Polymer Journal, 2004
The effect of weld line on the morphology and mechanical properties of 70/30 polystyrene and polyamide-6 blends with various amounts of poly(styrene-co-maleic anhydride) (SMA) as compatibilizer was investigated. For blends without or with low content of SMA, the dispersed domains near the weld line were elongated parallel to the weld line; and the ...
Chang Lu +3 more
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The effect of weld line on the morphology and mechanical properties of 70/30 polystyrene and polyamide-6 blends with various amounts of poly(styrene-co-maleic anhydride) (SMA) as compatibilizer was investigated. For blends without or with low content of SMA, the dispersed domains near the weld line were elongated parallel to the weld line; and the ...
Chang Lu +3 more
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