Authors
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Liu, F. ; Jiang, S. ; Ionov, L. ; Agarwal, S.
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Title
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Thermophilic films and fibers from photo cross-linkable UCST-type polymers
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Date
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31.07.2015
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Number
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47087
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Abstract
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Photo cross-linkable thermoresponsive polymers of UCST-type based on acrylamide (AAm) and acrylonitrile (AN) useful for preparing thermophilic hydrogel films and fibers are presented. The polymers prepared via free radical and reversible addition fragmentation chain-transfer (RAFT) polymerization methods using N-(4-benzoylphenyl)acrylamide (BPAm) as photo cross-linkable comonomers provided highly stable UCST-type phase transition in water reproducible without hysteresis for many cycles. The cloud point could be manipulated by varying the acrylonitrile amount in the feed. Chemically cross-linked hydrogel films and nanofibers (average diameter 500 nm) were successfully prepared from the ter-copolymers by solution casting and electrospinning followed by UV irradiation. These hydrogels showed a continuous positive volume transition behavior in water with increasing temperature that was utilized for the design of microactuators.
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Publisher
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Polymer Chemistry
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Wikidata
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Citation
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Polymer Chemistry 6 (2015) 2769-2776
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DOI
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https://doi.org/10.1039/C5PY00109A
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Tags
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