无规支化聚对苯二甲酸丁二酯稀溶液的粘度

Materials Chemistry Pub Date : 1982-09-01 DOI:10.1016/0390-6035(82)90068-2

F. Pilati, A. Munari, P. Manaresi

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引用次数: 3

摘要

通过对苯二甲酸二甲酯（DMT）和1，4-丁二醇与少量1，3，5-三羧甲基苯（TMT）（0.5至1.5mol%的三官能单元）的缩聚制备的聚（对苯二甲酸丁二酯）的随机支化多分散聚合物样品的实验特性粘度数据，对不同g规则的不同理论处理进行了测试。发现g32-规则对结果的拟合最好。特性粘度与重均支化度Bw的相关性通过经验方程得到；特性粘度也和熔体流动指数相关。

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Viscosity of dilute solutions of randomly branched poly (butyleneterephthalate)

Experimental intrinsic-viscosity data for randomly branched polydisperse polymer samples of poly(butyleneterephthalate), prepared by polycondensation of dimethylterephthalate (DMT) and 1,4-butanediol with small amounts of 1,3,5-tricarboxymethylbenzene (TMT) (from 0.5 to 1.5 mol% of trifunctional units), were used to test different theoretical treatments for different g-rules.

It was found that the $g^{32}$ -rule gave the best fits for the results.

Correlation of intrinsic viscosity with the weight-average degree of branching, B_w, was obtained by an empirical equation; intrinsic viscosity was also correlated with melt-flow index.

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Materials Chemistry

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