Substituent effects of N-alkyl groups on thermally induced polymerization behavior of 1,3-benzoxazines

Autor:	Atsushi Sudo, Takeshi Endo, Long-Chao Du, Shoji Hirayama
Rok vydání:	2010
Předmět:	chemistry.chemical_classification Polymers and Plastics Bulk polymerization Organic Chemistry Imine Substituent Ring-opening polymerization chemistry.chemical_compound Anionic addition polymerization Monomer chemistry Polymerization Polymer chemistry Materials Chemistry Alkyl
Zdroj:	Journal of Polymer Science Part A: Polymer Chemistry. 48:2777-2782
ISSN:	1099-0518 0887-624X
DOI:	10.1002/pola.24026
Popis:	Thermally induced polymerizations of a series of 1,3-benzoxazines with a variety of substituents on the nitrogen atom were investigated in detail, particularly in the following three aspects of the polymerization: (1) N-alkyl-1,3-benzoxazines are much more reactive than N-phenyl-1,3-benzoxazine. (2) The polymerization rate depended on the bulkiness of the N-substituent. The bulkier the substituent was, the slower the polymerization was. (3) The polymerizations accompanied weight loss due to the elimination of the corresponding imine (R-N = CH 2 ), and its extent became larger when R was more bulky.
Databáze:	OpenAIRE
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