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PREPARATION OF BLOCK-COPOLYMERS WITH MACROAZONITRILES AS THE INITIATOR
Date
1993-12-01
Author
YURUK, H
ULUPINAR, S
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Block copolymers containing poly(ethylene oxide) or poly(propylene oxide) prepolymer segments and methyl methacrylate were prepared. A stepwise procedure was first employed to prepare macro-azocarbamates by capping hydroxy-terminated poly(ethylene oxide) or poly(propylene oxide) with 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate and subsequently reacting this intermediate with 4,4'-azobis(4-cyano-n-pentanol)**. The resulting polymeric azocarbamates were used as free-radical initiators for the polymerization of methyl methacrylate. Various modes of preparation and the properties of the copolymers are described. Formation of block copolymers is illustrated by several analyses and measurements of elastic modulus versus temperature.
Subject Keywords
General Materials Science
URI
https://hdl.handle.net/11511/65984
Journal
ANGEWANDTE MAKROMOLEKULARE CHEMIE
DOI
https://doi.org/10.1002/apmc.1993.052130117
Collections
Department of Chemistry, Article
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H. YURUK and S. ULUPINAR, “PREPARATION OF BLOCK-COPOLYMERS WITH MACROAZONITRILES AS THE INITIATOR,”
ANGEWANDTE MAKROMOLEKULARE CHEMIE
, pp. 197–206, 1993, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65984.