• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Effect of diblock copolymers on morphology and mechanical properties for syndiotactic polystyrene/ethylene-propylene copolymer blends
【24h】

Effect of diblock copolymers on morphology and mechanical properties for syndiotactic polystyrene/ethylene-propylene copolymer blends

机译：二嵌段共聚物对间同聚苯乙烯/乙烯-丙烯共聚物共混物形态和力学性能的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Interfacial agents are often used to compatibilize immiscible polymer blends. They are known to reduce the interfacial tension, homogenize the morphology, and improve adhesion between phases. In this study, two diblock copolymers of styrene/ethylene-propylene (SEP), which have different molecular weights, were used to compatibilize a blend of syndiotactic polystyrene (sPS) 75% and ethylene-propylene rubber (EPR) 25% so as to extend the applications of sPS as incoming thermoplastics. The morphological analysis and emulsification curve, which relates the average size of the dispersion particles to the concentration of diblock copolymers added, was used to investigate the efficiency of the interfacial agents on the blend morphology. A notched izod impact test and a tensile test were also performed to determine the compatibilization effect of different molecular weight copolymers on the mechanical properties of the blends and to establish links between morphology and mechanical properties. Results suggest that the lower molecular weight diblock copolymer showed an effective emulsifying capacity for sPS/ERP immiscible blend in morphology and mechanical properties. (C) 2004 Wiley Periodicals, Inc. [References: 15]
机译：界面剂通常用于使不混溶的聚合物共混物相容。已知它们可降低界面张力，使形态均匀化并改善相之间的附着力。在这项研究中，使用两种具有不同分子量的苯乙烯/乙烯-丙烯（SEP）的二嵌段共聚物来相容75％间规聚苯乙烯（sPS）和25％乙丙橡胶（EPR）的混合物。扩展了sPS作为传入热塑性塑料的应用。形态分析和乳化曲线将分散颗粒的平均尺寸与所添加的二嵌段共聚物的浓度相关联，用于研究界面剂对共混物形态的效率。还进行了缺口悬臂梁式冲击试验和拉伸试验，以确定不同分子量共聚物对共混物机械性能的增容作用，并建立形态与机械性能之间的联系。结果表明，较低分子量的二嵌段共聚物对sPS / ERP不混溶共混物在形态和机械性能方面显示出有效的乳化能力。 （C）2004 Wiley Periodicals，Inc. [参考：15]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号