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Copolymer composition as a function of molecular weight and the effect of conversion on this relationship

✍ Scribed by Francis M. Mirabella Jr.; Edward M. Barrall II; Edmund F. Jordan Jr.; Julian F. Johnson

Publisher
John Wiley and Sons
Year
1976
Tongue
English
Weight
340 KB
Volume
20
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

The copolymer compositions as a function of molecular weight for three poly(styrene‐co‐vinyl stearate) copolymers of widely varying conversion were determined. A combined gel permeation chromatography–infrared spectroscopy method was used. Theoretical changes in copolymer composition were calculated using reactivity ratios. Comparison of the calculated and observed changes in copolymer composition as a function of molecular weight showed qualitative agreement. However, the observed changes in composition were significantly larger than those calculated.

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