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Synthesis of Poly(glycidyl methacrylate)‐ block ‐Poly(pentafluorostyrene) by RAFT: Precursor to Novel Amphiphilic Poly(glyceryl methacrylate)‐ block ‐Poly(pentafluorostyrene)
Author(s) -
Gudipati Chakravarthy S.,
Tan Maureen B. H.,
Hussain Hazrat,
Liu Ye,
He Chaobin,
Davis Thomas P.
Publication year - 2008
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.200800515
Subject(s) - glycidyl methacrylate , polymer chemistry , copolymer , methacrylate , polymerization , dispersity , reversible addition−fragmentation chain transfer polymerization , radical polymerization , chain transfer , materials science , chemistry , polymer , organic chemistry
Poly(glycidyl methacrylate) (PGMA) was synthesized by the RAFT method in the presence of 2‐cyanoprop‐2‐yl dithiobenzoate (CPDB) chain transfer agent using different [GMA]/[CPDB] molar ratios. The living radical polymerization resulted in controlled molecular weights and narrow polydispersity indices ( PDI ) of ≈1.1. The polymerization of pentafluorostyrene (PFS) with PGMA as the macro‐RAFT agent yielded narrow PDI s of ≤1.2 at 60 °C and ≤1.5 at 80 °C. The epoxy groups of the PGMA block were hydrolyzed to obtain novel amphiphilic copolymer, poly(glyceryl methacrylate)‐ block ‐poly(pentafluorostyrene) [PGMA(OH)‐ b ‐PPFS]. The PGMA epoxy group hydrolysis was confirmed by 1 H NMR and FTIR spectroscopy. DSC investigation revealed that the PGMA‐ b ‐PPFS polymer was amorphous while the PGMA(OH)‐ b ‐PPFS displayed a high degree of crystallinity.