Premium
Polymerizability of methyl α‐substituted acrylates containing methoxycarbonyl groups
Author(s) -
Kudoh Masaki,
Akutsu Fumihiko,
Odagawa Yoshiyuki,
Naruchi Kiyoshi,
Miura Masatoshi
Publication year - 1994
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.1994.021950134
Subject(s) - methyl acrylate , steric effects , chemistry , copolymer , monomer , polymer chemistry , reactivity (psychology) , styrene , yield (engineering) , acrylate , polymer , organic chemistry , materials science , medicine , alternative medicine , pathology , metallurgy
Dimethyl 4‐methyl‐1‐pentene‐2,4‐dicarboxylate ( 3 ) and trimethyl 4‐methyl‐1‐octene‐2,4,7‐tricarboxylate ( 4 ) are not radically homopolymerizable. Dimethyl 1‐hexene‐2,4‐dicarboxylate ( 5 ) polymerizes slowly to yield a small amount of oligomers. Homopolymerization of dimethyl 1‐butene‐2,4‐dicarboxylate ( 6 ) affords a high‐molecular‐weight polymer. Radical copolymerization of these methyl α‐substituted acrylates (M 2 ) with styrene (M 1 ) was carried out at 60°C using AIBN, and the following monomer reactivity ratios were obtained; 3 : r 1 = 0,983, r 2 = 0,000; 4 : r 1 = 0,938, r 2 = 0,000; 5 : r 1 = 0,672, r 2 = 0,119; 6 : r 1 = 0,566, r 2 = 0,195. The polymerizability of these methyl acrylate derivatives is influenced by the steric effect of the α‐substituents.