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Substituent effects in free radical copolymerization of substituted styrenes with acrylates and methacrylates

✍ Scribed by Faber, Jan W. H. ;Fowler, W. F.

Publisher
Wiley (John Wiley & Sons)
Year
1970
Tongue
English
Weight
329 KB
Volume
8
Category
Article
ISSN
0449-296X

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✦ Synopsis

Abstract

Relative reactivity ratios have been determined for o‐chlorostyrene with five lower acrylates and methacrylates, respectively, and for methyl acrylate with a number of substituted styrenes in free‐radical copolymerization. Analysis of the data shows that: (a) acrylates are less reactive than methacrylates with o‐chlorostyrene; (b) length of the side chain has little or no effect in methacrylates, but its effect is pronounced in acrylates with respect to their reactivity ratios; (c) chlorine substitution in the side chain of either acrylates or methacrylates has a significant influence on the reactivity ratio; (d) relative reactivity ratio data for methyl acrylate with substituted styrenes fail to show the expected relationship between monomer structure and resonance theory, inductive effect and, consequently, the Hammett σ values.

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