Synthesis and characterization of interpenetrating polymer networks from polyurethane and poly(ethylene glycol) diacrylate

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Interpenetrating polymer networks (IPNs) combining polyurethane (PU) and poly(ethylene glycol) diacrylate (PEGDA) networks were prepared with simultaneous polymerization. PU was synthesized from biocompatible and biodegradable poly(epsilon-caprolactone) diol, and the hydroxyl group of poly(ethylene glycol) was substituted with a crosslinkable acrylate group. The effects of the PU/PEGDA compositions and the crosslink density of PU and PEGDA on the thermal properties, swelling ratio, surface energy, mechanical properties, and morphologies were investigated. The mechanical properties of PEGDA networks were improved by the presence of PU networks, particularly in the 75% PU/25% PEGDA IPNs. All PU/PEGDA IPNs showed a microphase-separated structure with cocontinuous morphology, as observed by atomic force microscopy, which was in agreement with the results of swelling ratio and dynamic mechanical thermal analysis measurements. (C) 2008 Wiley Periodicals, Inc.
Publisher
JOHN WILEY SONS INC
Issue Date
2008-07
Language
English
Article Type
Article
Keywords

HYDROPHOBIC POLYSTYRENE IPNS; ENHANCED BLOOD COMPATIBILITY; CROSS-LINK DENSITY; MECHANICAL-PROPERTIES; SURFACE-PROPERTIES; PU/PS IPNS; IN-VITRO; MORPHOLOGY; ANTITHROMBOGENICITY; METHACRYLATE

Citation

JOURNAL OF APPLIED POLYMER SCIENCE, v.109, no.2, pp.805 - 812

ISSN
0021-8995
DOI
10.1002/app.28094
URI
http://hdl.handle.net/10203/86530
Appears in Collection
CBE-Journal Papers(저널논문)
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