| 聚全氟乙丙烯树脂中六氟丙烯分布问题的探讨 |
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| 引用本文： | 莫志深,于文汇,刘丽,韩平. 聚全氟乙丙烯树脂中六氟丙烯分布问题的探讨[J]. 高分子学报, 1980, 0(5): 317-320 |
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| 作者姓名： | 莫志深 于文汇 刘丽 韩平 |
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| 作者单位： | 中国科学院长春应用化学研究所(莫志深，于文汇，刘丽)，中国科学院长春应用化学研究所(韩平) |
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| 摘 要： | <正> 聚全氟乙丙烯树脂(以下简称FEP)是四氟乙烯与六氟丙烯的共聚物.目前对FEP尚无适当溶剂,所以不能用C~(3)高分辨NMR测定共聚单体在共聚物中的分布,故采用X射线衍射方法测量晶格常数和结晶度,以及密度与熔点的测定,对国产不同聚合体系FEP中的六氟丙烯分布问题进行探讨. 图1比较了聚四氟乙烯(PTFE)及FEP的X射线衍射谱(23℃)。在FEP共聚物中除了(100)晶面衍射峰外,尚有微弱的(110),(200)等晶面衍射峰,可以看出,FEP的行
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| 收稿时间： | 1979-10-19 |
A STUDY ON THE SEQUENCE DISTRIBUTION OF HEXAFLUOROPROPYLENE IN FEP COPOLYMERS |
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| Mo Zhi-shen,Yu Wen-hui,Liu Li,Han Ping. A STUDY ON THE SEQUENCE DISTRIBUTION OF HEXAFLUOROPROPYLENE IN FEP COPOLYMERS[J]. Acta Polymerica Sinica, 1980, 0(5): 317-320 |
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| Authors: | Mo Zhi-shen Yu Wen-hui Liu Li Han Ping |
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| Affiliation: | Changchun Institute of Applied .Chemistry; Academia Siniea |
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| Abstract: | The degree of crystallinity and lattice parameters of FEP copolymers polymerized with different methods and with various hexafluoropropylene contents were determined by X-ray diffraction method. Studies were also made on their density, melting point, heat of fusion and composition.It is shown from our results that the monomeric sequences of hexafluoropropy-lene are more uniformly distributed in the molecular chains of the copolymers obtained by emulsion and dispersion polymerization than that obtained by suspension poly-merization. |
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