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Block Copolymers by Mechanistic Transformation from PROAD to Iniferter Process
Author(s) -
Ciftci Mustafa,
Yagci Yusuf
Publication year - 2018
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201800464
Subject(s) - copolymer , polymer chemistry , reversible addition−fragmentation chain transfer polymerization , polymerization , radical polymerization , monomer , vinyl ether , styrene , materials science , living free radical polymerization , acrylate , methacrylate , polymer , photopolymer , chemistry , photochemistry , organic chemistry
A facile strategy for synthesizing block copolymers by the combination of two different living polymerization techniques, namely, photoinduced radical oxidation/addition/deactivation (PROAD) and iniferter processes is described. In the first step, PROAD polymerization of isobutyl vinyl ether using bromotriphenylmethane, dimanganese decacarbonyl (Mn 2 (CO) 10 ), and diphenyliodonium bromide (Ph 2 I + Br − ) is carried out to yield polymers with triphenylmethyl (trityl) end groups. These prepolymers are used as macroiniferters in thermally induced free radical polymerization of vinyl monomers such as methyl methacrylate, tert ‐butyl acrylate, and styrene, resulting in the formation of corresponding block copolymers free from homopolymers. The precursor polymer and final block copolymers are characterized by 1 H NMR, FT‐IR, GPC, and DSC analyses.