W/O悬浮聚合法合成淀粉接枝丙烯酰胺吸水膨胀凝胶微珠及其性能研究  

Studies on the synthesis of water-absorbing swelled gel-beads grafted AM onto starch by using W/O suspension graft polymerization

作　　者：张连生[1] 秦川丽[1] 杨巍[1] 赵隽颖[1] 王超[1] 

机构地区：[1]黑龙江大学化学化工学院,黑龙江哈尔滨150080

出　　处：《黑龙江大学自然科学学报》2001年第2期81-84,共4页Journal of Natural Science of Heilongjiang University

基　　金：黑龙江省"八五"科技攻关项目!(小试研究G95A1523);黑龙江省"九五"科技攻关项目!(中试研究G96B6-2-02)

摘　　要：以液体石蜡为分散介质，聚乙二醇为分散剂，水溶性淀粉为接枝骨架、Ｃｅ４＋＝Ｃｅ３＋为引发体系，用Ｗ／Ｏ悬浮聚合法合成了ＡＧＵ－ＰＡＭ－ＰＡＡＮａ－ＰＡＡ三元接枝共聚吸水膨胀凝胶微珠。研究了搅拌速度及分散剂用量对微珠的平均粒径、成珠剂用量对成珠率、交联剂用量对吸水膨胀性能的影响；考查了 ＡＧＵ、 ＡＭ、ＡＡ的用量及ＡＡ被ＮａＯＨ中和度与凝胶强度及抗盐能力的关系；测定了吸水凝胶微珠在不同浓度的盐水溶液中的体积变化行为。Used liquid paraffin as the dispersed phase, polyethylene glycol as the dispersing agent, water-soluble starch as a grafting backbone, N, N'-methylene-bisacrylamide as a crosslinking agent, Ce4+Ce3+ as a cyclic initiator system, the water-absorbing swelled gel-bead composed of AGU-PAM -PAANa-PAA ternary grafted copolymer is synthesized by using W/O suspension graft polymerization. The effect of stirring speed and the effects of adding amount of dispersant agent, crosslinking agent and bead-forming agent on the average diameter of the beads and on the weight of beads are studied. The relationship of the amount of crosslinking agent and the power of water-absorbing is examined. The volume varied behaviors of the gel-bead in different concentration of the solution of NaCl are also investigated.

关 键 词：淀粉接枝丙烯酰胺 吸水膨胀凝胶微珠 W/O悬浮法合成 搅拌速度 分散剂 凝胶强度 

分 类 号：O633.4[理学—高分子化学] O648.17[理学—化学]