✦ LIBER ✦

New self-crosslinkable copolymers based onN-methyl-N-vinylbenzylpyrrolidinium halide and methyl methacrylate

✍ Scribed by Tong, Jiang-Dong; Du Prez, Filip E; Goethals, Eric J

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 95 KB
Volume: 49
Category: Article
ISSN: 0959-8103
DOI: 10.1002/(sici)1097-0126(200003)49:3<288::aid-pi364>3.0.co;2-4

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✦ Synopsis

Thermally-induced self-crosslinking behaviour has been found in copolymers containing Nmethyl-N-vinylbenzylpyrrolidinium chloride (MVBPC) and methyl methacrylate (MMA). NMR, IR and low molecular weight model reactions demonstrate that this crosslinking reaction occurs between the methyl ester groups of the MMA units and the quaternary ammonium salts, with the resulting benzyl esters forming chemical links between the MVBPC and MMA units with the formation of N,Ndimethylpyrrolidinium chloride. Similar crosslinking behaviour has also been found when the Cl À anion is replaced by Br À and I À , but not in the case of BF À 4 as counter anion.

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