高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (10): 1958.

• 研究论文 • 上一篇    下一篇

偏氟乙烯/三氟氯乙烯无规共聚物的结晶

付海涛1, 陈玮1, 于瀛1, 范仲勇1, 聂福德1,2, 王建华2   

  1. 1. 复旦大学材料科学系, 上海200433;
    2. 中国工程物理研究院, 绵阳621900
  • 收稿日期:2003-07-02 出版日期:2004-10-24 发布日期:2004-10-24
  • 基金资助:

    国家自然科学基金(批准号:20074008);高等学校博士学科点专项科研基金;中国工程物理研究院资助

Crystallization Behavior of the Copoly(vinylidene fluoride-chlorotrifluoroethylene)

FU Hai-Tao1, CHEN Wei1, YU Ying1, FAN Zhong-Yong1, NIE Fu-De1,2, WANG Jian-Hua2   

  1. 1. Department of Materials Science, Fudan University, Shanghai 200433, China;
    2. China Academy of Engineering Physics, Mianyang 621900, China
  • Received:2003-07-02 Online:2004-10-24 Published:2004-10-24

PDF (PC)

被引次数

14

摘要： 用示差扫描量热法(DSC)、广角X射线衍射(WAXD)和傅里叶红外光谱(FTIR)研究了偏氟乙烯/三氟氯乙烯单体摩尔比为1:4的无规共聚物的结晶与晶体结构.结果表明,该无规共聚物属于半结晶型聚合物.在333～353K温度范围内退火,片晶逐渐完善、增厚,熔点和结晶度均随着退火时间的延长而升高.于353K退火时,由DSC结果计算得到片晶厚度约4.68nm.在333K退火时得到共聚物的最大结晶度约为14%.WAXD测试结果表明,沿晶粒(101)晶面的面间距为0.55nm,垂直于(101)衍射晶面方向上的晶粒平均尺寸为5.86nm.

关键词: 偏氟乙烯/三氟氯乙烯共聚物, 结晶, 结构

Abstract: The crystallization behavior and crystals structures of copoly(vinylidene fluoride-chlorotrifluoroethylene), which was synthesized with n(NDE):n(CTFE)=1:4, were investigated by DSC, WAXD and FTIR, respectively. The experimental data show that the copolymer is one of the semicrystalline polymers. By means of DSC, the thermal analysis of the samples annealed at 313—353 K indicated that their melting temperature and crystallinity increased as the annealing time increased. During the annealing process, the crystals become perfect through segment reorganization. As a result, average lamellar thickness of copolymer annealed at 353 K was estimated about 4.68 nm according to the melting point of the sample. Average crystal dimension normal to(101) was calculated to be 5.86 nm and the interplanar crystal spacing along to(101) was measured to be 0.55 nm by using WAXD. Annealed at 333 K for 720 h, it was revealed that the maximum crystallinity of copolymer was about 14%.

Key words: Copoly(vinylidene fluoride-chlorotrifluoroethylene), Crystallizition, Structures

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