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Controlled RAFT Polymerization of N ‐Vinylphthalimide and its Hydrazinolysis to Poly(vinyl amine)
Author(s) -
Maki Yuya,
Mori Hideharu,
Endo Takeshi
Publication year - 2007
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.200700330
Subject(s) - dithiocarbamate , xanthate , polymer chemistry , raft , polymerization , chemistry , chain transfer , reversible addition−fragmentation chain transfer polymerization , alkoxy group , solvent , radical polymerization , organic chemistry , polymer , alkyl
Polymerization of NVPI was carried out by a RAFT process using five xanthate‐type, a dithiocarbamate‐type, and a dithioester‐type CTA. The xanthate‐type [ O ‐ethyl‐ S ‐(1‐ethoxy carbonyl) ethyl dithiocarbonate and O ‐ethyl‐ S ‐(1‐ethoxycarbonyl‐1‐methyl)ethyl dithiocarbonate] and the dithiocarbamate‐type CTA (benzyl‐1‐pyrrolecarbodithioate) were the most efficient to obtain poly(NVPI) with controlled molecular weights ( $\overline M _{\rm n}$ = 4 100–13 000) and low polydispersities ( $\overline M _{\rm w} /\overline M _{\rm n}$ = 1.29–1.38). The effects of parameters such as solvent, temperature, and CTA‐to‐initiator molar ratio, were examined in order to determine the conditions leading to optimal control of the polymerization.