• 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 >Grafting styrene onto a polyethylene surface: A model study of an interfacial reaction
【24h】

Grafting styrene onto a polyethylene surface: A model study of an interfacial reaction

机译：将苯乙烯接枝到聚乙烯表面上：界面反应的模型研究

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

A model reactor system was assembled to study surface grafting reactions which would occur at the polymer interface in in-situ blend compatibilization using a vector fluid. The vector fluid's purpose is to convey a reactive ingredient to a blend interface and induce copolymer formation. Polyethylene (PE) was chosen as the polymer substrate, styrene monomer and/or dimethyl phthalate (DMP) as the vector fluid, and a peroxide initiator as the reactive ingredient. The free radical surface grafting reaction of styrene onto the PE surface was studied at melt processing temperature with a factorial experimental design involving the factors of time, temperature, initiator type and initiator concentration. It was found that styrene monomer was grafted at the PE substrate surface, forming a layer of PE-g-PS graft copolymer which was observed with attenuated total reflection Fourier transform infrared spectroscopy. The results indicated that the grafting reactions occurred not only at the immediate surface (2-3 mu m), but also beneath the PE surface (similar to 200 mu m) due to the swelling of the PE by the styrene monomer. The reaction below the immediate surface could be significantly reduced by the presence of DMP, a nonsolvent of PE; but the surface reaction was not affected. Explanations for the reaction behavior of the two different vector fluids are proposed based on the experimental results. (C) 1998 John Wiley & Sons, Inc. [References: 26]
机译：组装了模型反应器系统，以研究在使用矢量流体进行原位共混增容的聚合物界面处发生的表面接枝反应。载体流体的目的是将反应性成分输送到共混物界面并诱导共聚物形成。选择聚乙烯（PE）作为聚合物基质，选择苯乙烯单体和/或邻苯二甲酸二甲酯（DMP）作为载体流体，选择过氧化物引发剂作为反应性成分。在熔体加工温度下，采用时间，温度，引发剂类型和引发剂浓度等因素的因子实验设计，研究了苯乙烯在PE表面的自由基接枝反应。发现苯乙烯单体接枝在PE基材表面上，形成了PE-g-PS接枝共聚物层，其通过衰减的全反射傅里叶变换红外光谱观察到。结果表明，由于PE被苯乙烯单体溶胀，接枝反应不仅发生在直接表面（2-3μm）处，而且发生在PE表面以下（约200μm）。 DMP（一种非PE溶剂）的存在可大大降低直接表面以下的反应;但表面反应不受影响。根据实验结果，提出了两种不同矢量流体的反应行为的解释。 （C）1998 John Wiley＆Sons，Inc. [参考：26]

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