果胶-g-聚(丙烯酸-co-丙烯酰胺)水凝胶溶胀性能研究

Study on swelling properties of pectin-g-poly(acrylicacid-co-acry lamide)hydrogel

在水溶液中通过接枝共聚法制备出果胶-g-聚(丙烯酸-co-丙烯酰胺)水凝胶(PECAA),研究了PECAA在蒸馏水中的溶胀动力学,考察了其在不同溶剂中的溶胀行为。结果表明,PECAA在蒸馏水中的溶胀动力学过程可分为3个阶段;以PECAA在蒸馏水中的饱和溶胀度为参照值,其在自来水中的饱和溶胀度比值最高,其次为NaCl溶液,在CuSO4溶液中的饱和溶胀度比值最低。

A novel hydrogel of pectin-g-poly（ acrylicacid-co-acrylamide）were synthesized by grafted co-polymerization in aqueous solution. The swelling behavior of the hydrogel in distilled water were investiga-ted. The results indicated that the swelling kinetic of the hydrogel could be divided into three stages;the swelling ratio of the hydrogel was the highest,then in the NaCl solution,lowest in the CuSO4 solution.