Ultrasonic degradation of polybutadiene and isotactic polypropylene

被引：59

作者：

Chakraborty, J ^{[1
]}

Sarkar, J ^{[1
]}

Kumar, R ^{[1
]}

Madras, G ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Chem Engn, Bangalore 560012, Karnataka, India

来源：

POLYMER DEGRADATION AND STABILITY | 2004年 / 85卷 / 01期

关键词：

ultrasound; degradation; polybutadiene; isotactic polypropylene; solvent effect; continuous distribution kinetics;

D O I：

10.1016/j.polymdegradstab.2003.09.021

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 ultrasonic degradation of polybutadiene and isotactic polypropylene in solution was studied at different temperatures and in different solvents. The time evolution of molecular weight distribution was determined experimentally through gel permeation chromatography. Degradation rate coefficients were determined from a model based on continuous distribution kinetics and assuming mid-point chain scission. The variation of rate coefficients with vapour pressure and kinematic viscosity was also investigated. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：555 / 558

页数：4

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