| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1644264 | Materials Letters | 2014 | 4 Pages |
•Mono-capped polyurethane monomer with a vinyl group was synthesized.•Self-crystallizing calcium alginate-based polyurethane was synthesized.•Give full play to the advantages of polyurethane.•Self-crystallizing structure avoids the loss of crystal grain.•It׳s thermal stability and swelling degree were enhanced.
Polyurethane was synthesized by the reaction of isophorone diisocyanate, 2-hydroxyethyl methacrylate and diethylene glycol. Then polyurethane grafted calcium alginate gel material was prepared via free-radical grafting polymerization with azobisisobutyronitrile as an initiator. Modified calcium alginate hydrogel was improved in thermal property, crystallinity and anti-swelling properties. The reason is that polyurethane side chains affect the arrangement of calcium alginate by forming highly ordered crystal region.
