以聚乙烯醇(PVA)、壳聚糖(CS)为原料,戊二醛为交联剂,制备出PVA/CS复合水凝胶载体材料,改变PVA/CS的质量配比、交联剂含量、pH值和温度,考察了不同条件下对复合水凝胶溶胀性能的影响.结果表明,当PVA/CS质量比为3:1、交联剂体积分数为4%时所合成凝胶的溶胀性能较好;随着温度的升高,溶胀度不断减小;凝胶在酸性条件的溶胀性能远远优于碱性条件的溶胀性能.
PVA/CS composite hyarogel is prepared with polyvinyl alcohol(PVA)and chitosan(CS)as raw materials for the cross-linking agent glutaraldehyde,and change the PVA/CS ratio of quality,cross-linking agent concentration,pH value and temperature to study the composite under different conditions of water swelling properties.It shows that PVA/CS mass ratio of 3:1 and crosslinker's volume fraction of 4 % are the best condition for swelling.And the swelling capacity redues with the temperature increasing.It's swelling is better in acidic conditions than in alkaline.
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