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熔体拉伸聚乙烯超薄膜的结构表征
  • ISSN号：0023-074X
  • 期刊名称：《科学通报》
  • 时间：0
  • 分类：TQ325.12[化学工程—合成树脂塑料工业] O484.1[理学—固体物理;理学—物理]
  • 作者机构：[1]中国科学院化学研究所,高分子物理与化学国家重点实验室,北京100080
  • 相关基金：致谢 本工作为国家自然科学基金（批准号：20425414,20374056,20304018,50521302,20423003）和国家基础研究发展规划（批准号：2004CB720606）资助项目.
作者： 晏超[1], 张建明[1], 沈德言[1], 闫寿科[1]
关键词： PE超薄膜, 取向, 红外光谱, 电子显微镜
中文摘要：

用熔体拉伸法制备了高度取向的聚乙烯（PE）超薄膜．透射电子显微镜研究表明，这种熔体拉伸法制备的PE超薄膜包含大量沿着垂直于熔体拉伸方向平行排列的侧放（edge-on）片晶．电子衍射结果表明．PE超薄膜晶区内的分子链在薄膜平面内并沿着拉伸的方向高度取向，而其结晶学a轴和b轴在垂直于分子链轴的平面内无规取向．红外光谱的结果表明，PE超薄膜晶区与非晶区内的分子链都沿着拉伸方向取向．红外结果进一步证明在PE超薄膜晶区中，其结晶学b轴更倾向于平躺在薄膜平面内，PE超薄膜中b轴倾向于薄膜平面内的取向排列是因为b轴是PE晶体的最快生长方向．非晶区中PE分子链形成的局部C-C骨架平面倾向平行于薄膜平面．

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期刊信息
  • 《科学通报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国科学院
  • 主编：周光召
  • 地址：北京东黄城根北街16号
  • 邮编：100717
  • 邮箱：csb@scichina.org
  • 电话：010-64036120 64012686
  • 国际标准刊号：ISSN：0023-074X
  • 国内统一刊号：ISSN：11-1784/N
  • 邮发代号:80-213
  • 获奖情况:
  • 首届国家期刊奖,中国期刊方阵“双高”期刊,第三届中国出版政府奖
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  • 被引量:81792