Stimuli‐responsive 4‐acryloylmorpholine/4‐acryloylpiperidine copolymers via nitroxide mediated polymerization |
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| Authors: | Xeniya Savelyeva Adrien Métafiot Lucia Li Ian Bennett Milan Mari? |
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| Affiliation: | McGill University, Department of Chemical Engineering, McGill Institute of Advanced Materials (MIAM), Centre for Self‐Assembled Chemical Structures (CSACS), Centre Recherche du Polymeres et Composites du Quebec (CREPEQ), Québec, Canada |
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| Abstract: | 4‐acryloylmorpholine/4‐acryloylpiperidine statistical copolymers were synthesized by nitroxide mediated polymerization (NMP) with BlocBuilder unimolecular initiator in dimethylformamide solution at 120 °C. The copolymers had narrow molecular weight distributions (dispersity ? = 1.25–1.35, number average molecular weights M n = 8.5–13.7 kg mol?1). The copolymer microstructure was essentially statistical (reactivity ratios r 4AP = 0.81 ± 0.73, r 4AM = 0.73 ± 0.68 based on non‐linear fitting of the Mayo‐Lewis equation). Cloud point temperatures (CPT) in aqueous media were tuned from 11 °C to 92 °C, merely by adjusting the initial monomer composition. Using NMP permitted sharper control of the CPT transitions, compared to the similar copolymer made using conventional radical polymerization. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017 , 55 , 2160–2170 |
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| Keywords: | copolymerization nitroxide mediated polymerization poly(acrylamides) stimuli‐responsive polymers water‐soluble polymers |
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