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Oxygen‐Tolerant Photochemically Induced Atom Transfer Radical Polymerization of the Renewable Monomer Tulipalin A
Author(s) -
Zain Gamal,
Bondarev Dmitrij,
Doháňošová Jana,
Mosnáček Jaroslav
Publication year - 2019
Publication title -
chemphotochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.13
H-Index - 18
ISSN - 2367-0932
DOI - 10.1002/cptc.201900151
Subject(s) - chain transfer , polymerization , polymer chemistry , atom transfer radical polymerization , copolymer , monomer , living free radical polymerization , chemistry , catalysis , ligand (biochemistry) , methyl methacrylate , catalytic chain transfer , radical polymerization , photochemistry , organic chemistry , polymer , biochemistry , receptor
Abstract Well defined homopolymers and block copolymers from renewable monomer α ‐methylene‐ γ ‐butyrolactone (MBL) were prepared using photochemically induced atom transfer radical polymerization (photoATRP) in the presence of only 50–200 ppm of copper catalyst without the requirement of air removal from the polymerization mixture. The effect of solvent type and volume, ligand‐to‐copper ratio, catalyst concentration, ligand type, and the possible partial replacement of an expensive ligand with cheap simple amines, were investigated. The livingness of the oxygen‐tolerant photoATRP system was investigated by chain extension polymerization and the possibility to prepare block copolymers by chain extension of PMBL‐Br macroinitiator with methyl methacrylate (MMA) as well as by chain extension of PMMA‐Br macroinitiator with PMBL block was studied. It was shown that a concentration of catalyst as low as 50 ppm is sufficient to provide good control over the molecular characteristics and kinetics.