高等学校化学学报 ›› 1981, Vol. 2 ›› Issue (3): 372.

• 论文 • 上一篇    下一篇

磁场对聚合物立体构型影响的研究(Ⅰ)——聚甲基丙烯酸甲酯

周朝华, 苏致兴   

  1. 兰州大学化学系
  • 收稿日期:1980-09-27 出版日期:1981-08-24 发布日期:1981-08-24

A STUDY OF MAGNETIC FIELDS TO STEREOCHEMICAL CONFIGURATION INFLUENCE OF POLYMERS-Ⅰ-POLYMETHYLMETHACR YLATE

Zhou Chaohua, Su Zhixing   

  1. Chemistry Department, Lanzhou University, Lanzhou
  • Received:1980-09-27 Online:1981-08-24 Published:1981-08-24

摘要: 本文研究了在甲基丙烯酸甲酯聚合过程中,磁场对产物中间同立构含量的影响。间同立构含量的测定是采用红外光谱定量法。实验结果表明: (1)聚甲基丙烯酸甲酯的间同立构百分含量S%值随磁场强度的增加按指数关系增加。 (2)聚甲基丙烯酸甲酯的玻璃化温度随磁场强度的增加而增加。 (3)聚甲基丙烯酸甲酯的平均分子量随磁场强度的增加,也按指数关系增加。 (4)通过公式计算了聚甲基丙烯酸甲酯分子链中能连续出现N个间同立构链节的组成几率FN值。

Abstract: Polymerization of methyl methacrylate in magnetic fields influences the syndiotacticity in the molecular chain of polymethylmethacrylate. By increase of magnetic field intensity, the percent content of the syndiotactic of polymethylmethacrylate increases, and so does glass temperature.The composition probability of N chain segments of the syndiotactic of polymethylmethacrylate in the molecular chain of polymethylmethacrylate can also be calculated.

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