| SPATIAL HIERARCHY AND INTERFACIAL STRUCTURE IN INJECTIONMOLDED BARS OF POLYPROPYLENE-BASED BLENDS AND COMPOSITES |
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| 作者姓名： | Ke Wang Min Guo Si Liang Ping Zhao Hong Yang Qin Zhang Rong-ni Du Qiang Fu |
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| 作者单位： | Department of Polymer Science and Materials, Sichuan University, State Key Laboratory of Polymer Materials Engineering, Chengdu 610065, 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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教育部科学技术研究重点项目 |
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| 摘 要： | The hierarchical structure and interfacial morphology of injection-molded bars of polypropylene （PP） based blends and composites have been investigated in detail from the skin to the core. For preparation of injection-molded bars with high-level orientation and good interfacial adhesion, a dynamic packing injection molding technology was applied to exert oscillatory shear on the melts during solidification stage. Depending on incorporated component, interfacial adhesion and processing conditions, various oriented structure and morphology could be obtained. First, we will elucidate the epitaxial behavior between PP and high-density polyethylene occurring in practical molded processing. Then, the shear-induced transcrystalline structure will be the main focus for PP/fiber composites. At last, various oriented clay structures have been ascertained unambiguously in PP/organoclay nanocomposites along the thickness of molded bars.
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| 关 键 词： | 聚丙烯 界面结构 高分子化学 合成方法 烯烃聚合物 |
| 收稿时间： | 2006-07-17 |
| 修稿时间： | 2006-08-08 |
SPATIAL HIERARCHY AND INTERFACIAL STRUCTURE IN INJECTION-MOLDED BARS OF POLYPROPYLENE-BASED BLENDS AND COMPOSITES |
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| Ke Wang Min Guo Si Liang Ping Zhao Hong Yang Qin Zhang Rong-ni Du Qiang Fu.SPATIAL HIERARCHY AND INTERFACIAL STRUCTURE IN INJECTIONMOLDED BARS OF POLYPROPYLENE-BASED BLENDS AND COMPOSITES[J].Chinese Journal of Polymer Science,2007,0(1):23-33. |
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| Authors: | Ke Wang Min Guo Si Liang Ping Zhao Hong Yang Qin Zhang Rong-ni Du Qiang Fu |
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| Institution: | Department of Polymer Science and Materials, Sichuan University, State Key Laboratory of Polymer Materials Engineering, Chengdu 610065, China |
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| Abstract: | The hierarchical structure and interfacial morphology of injection-molded bars of polypropylene (PP) based blends and composites have been investigated in detail from the skin to the core. For preparation of injection-molded bars with high-level orientation and good interfacial adhesion, a dynamic packing injection molding technology was applied to exert oscillatory shear on the melts during solidification stage. Depending on incorporated component, interfacial adhesion and processing conditions, various oriented structure and morphology could be obtained. First, we will elucidate the epitaxial behavior between PP and high-density polyethylene occurring in practical molded processing. Then, the shear-induced transcrystalline structure will be the main focus for PP/fiber composites. At last, various oriented clay structures have been ascertained unambiguously in PP/organoclay nanocomposites along the thickness of molded bars. |
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| Keywords: | Polypropylene Injection-molded bar Interfacial structure Orientation Transcrystallization Blend and composite |
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