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1,3-Oxazoline intermediates in reactive processing applications, 1. Melt grafting of poly(ethene-co-methacrylic acid) with 2-substituted 1,3-oxazolines

✍ Scribed by Philipp Müller; Christof Wörner; Rolf Mülhaupt

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
533 KB
Volume
196
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

A novel family of functional ethene copolymers with various side chains were prepared by melt grafting of poly(ethene‐co‐methacrylic acid), containing 3,00 and 4,25 mol‐% of methacrylic acid, with 2‐substituted 1,3‐oxazolines such as 2‐phenyl‐1,3‐oxazoline, 2‐undecyl‐1,3‐oxazoline, 2‐heptadecyl‐1,3‐oxazoline, and 4‐(1,3‐oxazolin‐2‐yl)phenyl 4‐methoxybenzoate. ^1^H NMR and FTIR studies of the polymer microstructures revealed that carboxylic acid groups reacted with 1,3‐oxazolines within few minutes to form esteramide‐coupled side chains in very high yields. Torque of the reaction mixture, mechanical and thermal properties of the graft copolymers were measured. In the case of 2‐heptadecyl‐esteramide‐substituted polyethenes, the side‐chain cocrystallization accounted for higher crystallinity of the resulting graft copolymers.

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