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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
Author(s) -
Müller Philipp,
Wörner Christof,
Mülhaupt Rolf
Publication year - 1995
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1995.021960611
Subject(s) - oxazoline , polymer chemistry , copolymer , methacrylic acid , grafting , side chain , chemistry , fourier transform infrared spectroscopy , crystallinity , polymer , materials science , organic chemistry , chemical engineering , catalysis , crystallography , engineering
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.