摘要
以含阻聚剂的工业级丙烯酸(AA)、丙烯酸甲酯(MA)及木薯淀粉、丙烯酰胺(AM)为原料,采用反相悬浮法,使用自配分散剂,环己烷为连续相,过硫酸钾和亚硫酸氢钠为引发剂,N,N-亚甲基双丙烯酰胺为交联剂合成了高吸水树脂。结果表明,最佳工艺条件为:m(淀粉)∶m(AA)∶m(AM)=1.0∶4.5∶0.9,MA、交联剂加入量分别为5.0%,0.3%(相对AM和AA总质量),引发剂(两次引发)浓度分别为2.0,13.5 mmol/L,油水比例为1.90∶1.00(体积比)。在上述条件下制得的树脂的吸水率≥600 g/g,吸盐率≥60 g/g,环己烷回收率为97.3%。由于引入适量的MA,产物吸水率和吸盐率提高了20%,产物形态由最初的粘接颗粒变成分散颗粒。
A super-absorbent resin was synthesized by inverse suspension copolymerization, using industrial grade acrylic acid （ AA）, methyl acrylate （ MA ） that contain inhibitor and cassava starch, acrylamid （AM） ,with self-made agent as dispersing agent, cyclohexane as continuous phase, potassium persulfate and sodium bisulfite as initiator, N, N-mythylene bisacrylamide as cross-linking agent. The result shows that the optimum reaction conditions ： m （starch） ： m （AA） ： m （AM） = 1.0 ： 4.5 ： 0.9, dosage of MA and cross-linking agent 5.0%, 0.3% （ based on the total mass of AA and AM）, concentration of initiator （twice initiation） 2.0,13.5 mmol/L, the ratio solvent to water phase 1.90： 1.00（v/v）. Based on above conditions, the prepared resin can absorb deionizing water over 600 times of its own weight and NaC1 aqueous solution（9 g/L）over 60 times, recovery of cyclohexane 97.3%. The absorbing capacities of resin for water and salt-water is improved 20% and the shape of product from adhesive particles change to dispersed particles when the content of MA is proper.
出处
《应用化工》
CAS
CSCD
2007年第12期1207-1210,1214,共5页
Applied Chemical Industry
关键词
高吸水树脂
反相悬浮共聚
淀粉
亲水单体
疏水单体
super-absorbent resin
inverse suspension copolymerization
starch
hydrophilic monomer
hydrophobic monomer
