PSt-b-PU-b-PSt copolymers using tetraphenylethane-urethane macroinitiator through SARA ATRP
P. Chmielarz, P. Krol
Vol. 10., No.4., Pages 302-310, 2016
DOI: 10.3144/expresspolymlett.2016.28
DOI: 10.3144/expresspolymlett.2016.28
Corresponding author: P. Chmielarz 
GRAPHICAL ABSTRACT
ABSTRACT
The course of supplemental activator and reducing agent (SARA) atom transfer radical polymerization (ATRP) has been presented in the presence of Cu0. The novelty of this work is that SARA ATRP has been used for the first time to synthesize polystyrene-b-polyurethane-b-polystyrene copolymers by using tetraphenylethane-urethane macroinitiator as transitional products reacting with styrene in the presence of CuIIBr2/TPMA catalyst complex. The influence of copper surface area on the polymerization was examined. It was confirmed that in all cases, both the molecular weight of resulting copolymer increases linearly with increasing conversion as well as the value of ln([M]0/[M]) as a function of polymerization time increases linearly. A successful formation of the urethane-styrene copolymers was confirmed by NMR spectral studies.
