明胶
自愈水凝胶
肿胀 的
果胶
高碘酸盐
高分子化学
增塑剂
化学工程
极限抗拉强度
阳离子聚合
材料科学
化学
有机化学
复合材料
生物化学
工程类
作者
Bhuvanesh Gupta,Mythili Tummalapalli,B. L. Deopura,Mohammad Sarwar Alam
标识
DOI:10.1016/j.carbpol.2014.02.019
摘要
Crosslinked hydrogels were developed by in-situ reaction of periodate oxidized pectin (OP) and gelatin. The reaction takes place through the formation of Schiff bases between aldehyde groups of OP and amino groups of gelatin. The effect of various process parameters such as reaction time, reaction temperature, pH of the reaction and composition on the efficacy of the crosslinking was investigated. Field emission scanning electron micrsocopy (FESEM) revealed that homogenous, single phase systems are obtained after the crosslinking of OP and gelatin. The swelling characteristics of the hydrogels were monitored. The equilibrium swelling varies in the range of 195–324% with a variation in the gelatin content (10–40%). Glycerol, when used as a plasticizer, improved the flexibility and the handling characteristics of the crosslinked hydrogels. Plasticized films retained good tensile strengths in the range of 19–48 MPa. By proper selection of the reaction conditions, the efficiency of crosslinking can be controlled to obtain the optimum results.
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