Control of molecular weight distribution in polycondensation polymers. Polyamide synthesis

被引：31

作者：

Shibasaki, Y ^{[1
]}

Araki, T ^{[1
]}

Okazaki, M ^{[1
]}

Ueda, M ^{[1
]}

机构：

[1] Tokyo Inst Technol, Grad Sch Sci & Engn, Dept Organ & Polymer Mat, Meguro Ku, Tokyo 1528552, Japan

来源：

POLYMER JOURNAL | 2002年 / 34卷 / 04期

关键词：

controlled polymerization; polycondensation; aromatic polyamide; LiCl; Grignard reagent; low polydispersity; condensative chain polymerization;

D O I：

10.1295/polymj.34.261

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Synthesis of the aromatic polyamide with a narrow molecular weight distribution (M-w/M-n) was investigated via polycondensation. The new monomers, metal amide anions of 4-(N-octylamino)benzoylbenzoxazolin-2-thione (2) was prepared to prevent conventional polycondensation. The number average molecular weights (M-n)s of the resulting polymer could be controlled varying the feed ratio of 2 and p-nitrobenzoyl chloride in the range of 10(3)-10(4) maintaining narrow M-w/M(n)s (similar to 1.15). The kinetic plots of the polymerization gave a linear relationship between polymerization time and -(1/[I](0)) In([M]/[M](0)), and the rate of the polymerization was estimated as 116.4 mol(-1) h(-1).

引用

页码：261 / 266

页数：6

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