| TOUGHENING OF POLYCARBONATE WITH PBA-PMMA CORE-SHELL PARTICLES |
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| 作者姓名： | Wei-guoYao Li-qinWang Da-yongHe 将世春 Li-jiaAn Hui-xuanZhang |
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| 作者单位： | StateKeyLaboratoryofPolymerPhysicsandChemistry,ChangchunInstituteofAppliedChemistry,ChineseAcademyofSciences,Changchun130022,China |
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| 基金项目： | 国家自然科学基金
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国家重点基础研究发展计划(973计划)
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中国科学院资助项目 |
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| 摘 要： | The miscibility, mechanical properties, morphology and toughening mechanism of PC/PBA-PMMA blends were investigated. The dynamic mechanical results show that PC/PBA-PMMA blend has good miscibility and strong interfacial adhesion. The Izod impact strength of blend PC/PBA-PMMA with 4% (volume fraction) PBA-PMMA core-shell modifier is 16 times higher than that of pure PC. The core-shell volume fraction and thickness of the PMMA shell have effect on the toughness of PC/PBA-PMMA blends. As PMMA volume fraction increases, the toughness of PC/PBA-PMMA blend increases, and reaches a maximum value at 30% volume fraction of PMMA or so. The tensile properties of PC/PBA-PMMA blend with a minimum amount of PBA-PMMA modifier show that brittle-tough transition has no significant variance in comparison with that of pure PC. The scanning electron microscopic (SEM) observation indicates that the toughening mechanism of the blend with the pseudo-ductile matrix modified by small core-shell latex polymer particles is the synergetic effect of cavitation and shear yielding of the matrix.
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| 关 键 词： | 聚碳酸酯 聚甲基丙烯酸甲酯 聚合反应 韧化处理技术 双酚A |
| 收稿时间： | 2004-03-29 |
| 修稿时间： | 2004-05-17 |
TOUGHENING OF POLYCARBONATE WITH PBA-PMMA CORE-SHELL PARTICLES |
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| Wei-guo Yao,Li-qin Wang,Da-yong He,Shi-chun Jiang,Li-jia An,Hui-xuan Zhang.TOUGHENING OF POLYCARBONATE WITH PBA-PMMA CORE-SHELL PARTICLES[J].Chinese Journal of Polymer Science,2005,0(3):337-340. |
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| Authors: | Wei-guo Yao Li-qin Wang Da-yong He Shi-chun Jiang Li-jia An Hui-xuan Zhang |
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| Institution: | State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, |
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| Abstract: | The miscibility, mechanical properties, morphology and toughening mechanism of PC/PBA-PMMA blends were investigated. The dynamic mechanical results show that PC/PBA-PMMA blend has good miscibility and strong interfacial adhesion. The Izod impact strength of blend PC/PBA-PMMA with 4% (volume fraction) PBA-PMMA core-shell modifier is 16 times higher than that of pure PC. The core-shell volume fraction and thickness of the PMMA shell have effect on the toughness of PC/PBA-PMMA blends. As PMMA volume fraction increases, the toughness of PC/PBA-PMMA blend increases, and reaches a maximum value at 30% volume fraction of PMMA or so. The tensile properties of PC/PBA-PMMA blend with a minimum amount of PBA-PMMA modifier show that brittle-tough transition has no significant variance in comparison with that of pure PC. The scanning electron microscopic (SEM) observation indicates that the toughening mechanism of the blend with the pseudo-ductile matrix modified by small core-shell latex polymer particles is the synergetic effect of cavitation and shear yielding of the matrix. |
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| Keywords: | Toughening PC/PBA-PMMA blends Core-shell particle PARTICLES POLYCARBONATE observation modified small latex polymer particles synergetic effect cavitation shear yielding matrix scanning electron microscopic minimum transition significant variance comparison |
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