Journal
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 69, Issue -, Pages 268-275Publisher
ELSEVIER
DOI: 10.1016/j.msec.2016.06.084
Keywords
Gellan gum; Polyvinyl alcohol; Structure; Mechanical property; Swelling; Dehydration kinetics
Categories
Funding
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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The composite hydrogels of polyvinyl alcohol (PVA) and gellan gum (GG) are of interesting in the biomaterials application. To improve the structure and mechanical property, in this work, Ca2+ ion was introduced to crosslink the polymer chain, and the PVA-GG-Ca2+ hydrogel was formed. By analyzing its structure, mechanical properties, swelling and dehydration kinetics, the effect of molecular interaction on hydrogel structure and properties have been observed. Our result indicates that, as GG is added to hydrogel network, the role of Ca2+ ion is stand out, it reorganizes the network structure, enhances the mechanical properties, and strengthens the electrolytic and hydrogen bonding interactions in PVA-GG-Ca2+ hydrogels. These observations will benefit the development of hydrogels in biomaterials application. (C) 2016 Published by Elsevier B.V.
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