Characterization of Randomly Branched Polydisperse Polymers

IF 2.3 4区化学 Q3 POLYMER SCIENCE

Polymer Journal Pub Date : 1976-09-01 DOI:10.1295/polymj.8.415

Hideomi Matsuda, Izumi Yamada, Shigetaka Kuroiwa

引用次数: 3

Abstract

A new method for characterizing randomly branched polydisperse polymers is proposed. Measurements of sedimentation velocity and diffusion of the branched polymer at the θ point of the corresponding linear polymer give two apparent molecular weight distribution curves. From these curves the real molecular weight distribution curve can be obtained without any effect of branching, and the branching parameter distribution curve can be calculated. This new method has been applied to polystyrene—divinylbenzene copolymers; the results show that the method is very simple and useful for the characterization of branched polymers.

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随机支化多分散聚合物的表征

本文提出了一种表征随机支化多分散聚合物的新方法。通过测量支化聚合物在相应线性聚合物的 θ 点处的沉降速度和扩散情况，可以得到两条表观分子量分布曲线。从这些曲线可以得到不受支化影响的真实分子量分布曲线，并计算出支化参数分布曲线。这种新方法已应用于聚苯乙烯-二乙烯基苯共聚物；结果表明，这种方法非常简单，而且对支化聚合物的表征非常有用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polymer Journal 化学-高分子科学

CiteScore

5.60

自引率

7.10%

发文量

131

审稿时长

2.5 months

期刊介绍： Polymer Journal promotes research from all aspects of polymer science from anywhere in the world and aims to provide an integrated platform for scientific communication that assists the advancement of polymer science and related fields. The journal publishes Original Articles, Notes, Short Communications and Reviews. Subject areas and topics of particular interest within the journal''s scope include, but are not limited to, those listed below: Polymer synthesis and reactions Polymer structures Physical properties of polymers Polymer surface and interfaces Functional polymers Supramolecular polymers Self-assembled materials Biopolymers and bio-related polymer materials Polymer engineering.