Abstract
The amphiphilic copolymer with uniform poly(ethylene oxide) as side chains was prepared by initiating of AIBN polymerization of methacryloyl-terminated PEO macromonomer (PEOM) and styrene (St) in the presence of 4-hydroxyl-2,2,6,6-tetramethylpiperidine-1-oxy (HTEMPO). The copolymerization is controllable, the molecular weight of the copolymer and the conversion of the monomer increase with the polymerization time, and the distribution is rather narrow and is in the range 1.23−1.33. It was confirmed that the relative reactivity of PEOM macromonomer decreases with an increase in its molecular weight, and the variation of concentration of HTEMPO and AIBN can affect the copolymerization greatly.
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