| 拉伸和退火诱导间同立构聚丙烯的构象转变 |
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| 引用本文： | 张斌,杨德才.拉伸和退火诱导间同立构聚丙烯的构象转变[J].高等学校化学学报,1999,20(3):486-488. |
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| 作者姓名： | 张斌 杨德才 |
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| 作者单位： | 中国科学院长春应用化学研究所高分子物理开放实验室, 长春 130022 |
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| 基金项目： | 国家自然科学基金,国家科委国家基础性研究重大关键项目资助 |
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| 摘 要： | 90年代以来,随着锆和铪茂金属催化剂的出现,人们已能得到高立构度的sPP1].由于sPP具有无毒,软硬适中,尤其是在高度结晶时仍具有很好的透明性等优点,越来越受到人们的广泛注意.
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| 关 键 词： | 间同立构聚丙烯 拉伸 构象转变 |
| 收稿时间： | 1998-03-18 |
Conformation Transformation of Syndiotactic Polypropylene Induced by Stretching and Annealing |
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| ZHANG Bin,YANG De-Cai.Conformation Transformation of Syndiotactic Polypropylene Induced by Stretching and Annealing[J].Chemical Research In Chinese Universities,1999,20(3):486-488. |
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| Authors: | ZHANG Bin YANG De-Cai |
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| Institution: | Polymer Physics Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 |
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| Abstract: | Conformation transformation of syndiotactic polypropylene(sPP) induced by stretching and annealing processes has been investigated by WAXD, IR and DSC. The results indicate that not only the quenched samples but also the isothermally crystallized samples can form the crystals with alltrans conformation by means of uniaxially stretching at room temperature. The alltrans conformation crystals are of metastability, which can transform to stable crystals with (TTGG)2 helical conformation at higher annealing temperatures. |
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| Keywords: | Syndiotactic polypropylene Stretching Conformation transformation |
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