POLYMERIZATION KINETICS OF RIGID-ROD-LIKE MOLECULES .2. POLYMERIZATION OF POLY(1,4-PHENYLENE-2,6-BENZOBISTHIAZOLE) IN THE NEMATIC STATE

被引：8

作者：

SPENCER, CP ^{[1
]}

BERRY, GC ^{[1
]}

机构：

[1] CARNEGIE MELLON UNIV,DEPT CHEM,PITTSBURGH,PA 15213

来源：

POLYMER | 1992年 / 33卷 / 09期

关键词：

ROD-LIKE; POLYMERIZATION KINETICS; NEMATIC; POLY(1,4-PHENYLENE-2,6-BENZOBISTHIAZOLE);

D O I：

10.1016/0032-3861(92)90491-E

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The kinetics of the polymerization to form the rod-like poly(1,4-phenylene-2,6-benzobisthiazole) in the nematic phase are discussed. The kinetics are not affected by a phase transformation from isotropic to nematic, provided that transformation occurs early in the polymerization. Suppressed diffusion rate parallel to the molecular axes appears to control the kinetics over much of the conversion, resulting in a constant rate of increase of the intrinsic viscosity with polymerization time. At high conversions, additional constraints due to restricted rotational diffusion may occur. The molecular-weight distribution is close to most-probable.

引用

页码：1909 / 1913

页数：5

共 10 条

[1]

Berry G.C., 1978, J POLYM SCI C, V65, P143

[2]

Berry GC, 1986, ENCY MATERIALS SCI E, P3759

[3] REACTION-KINETICS AND CHEMORHEOLOGY OF POLY(PARA-PHENYLENEBENZOBISTTHIAZOLE) POLYMERIZATION IN THE ORDERED PHASE [J].