Magnetic orientation of isotactic polystyrene

被引:66
作者
Ezure, H [1 ]
Kimura, T [1 ]
Ogawa, S [1 ]
Ito, E [1 ]
机构
[1] TOKYO METROPOLITAN UNIV,FAC ENGN,DEPT IND CHEM,HACHIOJI,TOKYO 19203,JAPAN
关键词
D O I
10.1021/ma970077g
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Magnetic orientation of isotactic polystyrene during the isothermal crystallization at 210 degrees C in the magnetic field of 6 T is studied by using the magnetic birefringence, X-ray diffraction, and infrared measurements. The orientation starts in the vicinity of the end of the induction period, that is, before the crystal growth is observed by the wide angle X-ray diffraction This suggests that some anisotropic structures formed in the induction period are responsible for the magnetic orientation. Crystals formed are aligned with the c-axis, perpendicular to the magnetic field. Crystallization process is accelerted under the magnetic field.
引用
收藏
页码:3600 / 3605
页数:6
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