阿魏酸
漆酶
自愈水凝胶
聚乙烯醇
结晶度
背景(考古学)
聚合物
化学工程
化学
材料科学
肿胀 的
高分子化学
核化学
有机化学
色谱法
复合材料
酶
古生物学
工程类
生物
作者
Patrícia Alessandra Bersanetti,Victor Hugo Escobar,R. Nogueira,Fernando dos Santos Ortega,Paulo Schor,Andreia de Araújo Morandim‐Giannetti
标识
DOI:10.1016/j.eurpolymj.2018.10.024
摘要
Hydrogels are three-dimensional natural or synthetic polymeric materials with numerous medical and biological applications, such as the ophthalmic area. In this context, a hydrogel using polyvinyl alcohol (PVA) and ferulic acid in the presence of laccase was obtained. The concentrations of PVA, laccase, and ferulic acid were modified, and their effects were analyzed in terms of refractive index, density, and dynamic viscosity. The best condition for obtaining the hydrogel was 12.0% of PVA (w/w), laccase concentration of 836 μg mL−1, and ferulic acid concentration of 1.95 mM. The rheological measurements confirmed the PVA reticulation with ferulic acid in the presence of laccase, as it promoted an increase in viscosity. On the other hand, the reaction stimulated a decrease in the swelling degree, crystallinity, and melting temperature. Therefore, these results confirm the formation of crosslinks among the PVA chains.
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