绿色环保型高吸水树脂的制备及吸水性能的研究

采用反相乳液聚合法，以具有良好生物降解性和环境相容性的海藻酸钠、丙烯酸和丙烯酰胺为单体，N，N’-亚甲基双丙烯酰胺为交联剂，过硫酸铵为引发剂，司班-60和吐温-80作为乳化剂，环己烷为分散介质，合成绿色环保型的聚丙烯酸系高吸水性树脂．研究海藻酸钠、引发剂、交联剂用量等对吸水性能的影响．采用扫描电子显微镜（SEM）对高吸水性树脂的结构及表面形态进行分析和表征．当海藻酸钠加入量为7．5％（占单体的质量分数），中和度为80％，交联剂用量为0．05％，乳化剂用量为9％，单体配比m（AA）：m（AM）]为1：2时，所制得的高吸水树脂具有较好的吸水性能，其最高吸水倍率达1889g／g，吸水速率达到5．11S．

Preparation of Green Environmental Protection Super Absorbent Polymer and Research of Water Absorption Performance

The acrylic acid-based super absorbent polymer（SAP） was synthesized by inverse emulsion polymerization,using sodium alginate which had good biodegradability and environmental compatibility, crylic acid and acrylamide as monomer, N, N＇-Methylene-bis-acrylamide （MBA） as cross-linking agent, ammonium persulfate as initiator, span-60 and tween-80 as suspension stabilizer, cyclohexane as the con- tinuous phase. It studied the effects of sodium alginate, the amount of cross-linking agent and initiator, ac- rylamide and drying condition on water absorption performance. The structure of the resin of high absorp- tion capacity and the surface form were analysed and characterized by using SEM. When sodium alginate content was 7.5 %, the degree of neutralization was 80 %, cross-linking agent concentration was 0. 05 %, and emulsifier content was 9 %. The SAP had better water absorption performance.