交联剂对多孔水凝胶形态结构的影响

Influence of Crosslinker on the Morphologic Structures of Porous Hydrogels

多孔水凝胶是一类具有多孔结构的水凝胶,通常具有较好的吸附性能和溶胀性能。本工作将淀粉与丙烯酰胺进行自由基接枝聚合,并采用溶剂交换的方法得到多孔水凝胶。分别选用聚乙二醇二甲基丙烯酸酯和戊二醛为交联剂,制得淀粉-聚丙烯酰胺多孔水凝胶,考察了交联剂对多孔水凝胶形态结构的影响。结果表明,使用两种交联剂均能得到多孔结构的水凝胶,而以戊二醛为交联剂时更易于形成具有均匀孔结构的多孔水凝胶。

Porous hydrogels are a kind of hydrogels with cellular structures. They tion and swelling properties. In this work porous hydrogels were prepared by grafting usually show excellent adsorpstarch with acrylamide, and via a solvent exchanging process in the alcohol/water mixture solvents. Two kinds of crosslinker were used, respectively,polyethylene glycol dimethacrylate and glutaraldehyde. The influences of crosslinkers on the morphologic structures of porous hydrogels were investigated. The results showed that porous hydrogels could be obtained from these two crosslinkers. Porous hydrogels with uniform cellular structures were liable to be produced using glutaraldehyde as a crosslinker.