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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。
With liquid paraffin as dispersion medium, polyethylene glycol as dispersant, water-soluble starch as graft skeleton and Ce4 + = Ce3 + as initiator system, ternary graft of AGU-PAM-PAANa-PAA was synthesized by W / O suspension polymerization Copolymer water-swelling gel beads. The effects of stirring speed and the amount of dispersant on the average particle size of beads, the amount of beads used, the bead ratio and the amount of cross-linking agent on the water-swelling properties were investigated. The effects of AGU, AM, And the degree of gel strength and salt resistance of the relationship; Determination of the volume of water-absorbing gel beads in different concentrations of saline solution behavior.