棉短绒纤维制备高吸水性树脂研究

Preparation of super Absorbent resin from cotton flock fibers

采用溶液聚合法,以天然植物资源棉短绒纤维为原料,经醚化制得羧甲基纤维素(CMC),然后与丙烯酸(AA)及丙烯酰胺(AM)接枝共聚,最后经N,N-亚甲基双丙烯酰胺(MBAA)交联制备得到高吸水性树脂(SAP)。制备的高吸水性树脂吸收去离子水的能力超过2500倍,吸收质量分数为0.9%的生理盐水高达310倍左右,高吸水性树脂经充分吸收润涨后呈透明的胶状物质。

Super absorbent resin has been synthesized through solution polymerization in this study. Cotton flock fibers were used as raw material and modified with chloroacetic acid to obtain carboxymethyl cellulose （CMC）. Thereafter, the super absorbent polymer （SAP） was synthesized through grafting copolymerization of CMC with acryl acid （AA） and acrylamide （AM） using N, N-methylene biscrylamide （MBAA） as cross-linker. The prepared super absorbent resin could absorb more than 2 500 times of deionized water and 310 times of 0.9% NaCl solution. It became transparent colloid when fully wetted with deionized water.