耐盐性丙烯酸共聚物/膨润土高吸水性复合材料的研究

Research on copolyacrylic/bentonite with salt resistance super absorbent composite material

利用水溶液法制备了聚丙烯酸-丙烯酸羟乙酯/膨润土高吸水性复合材料,研究各反应因素对该高吸水性复合材料吸水性能的影响,并用红外光谱对产物结构进行了表征。结果表明,该复合材料的合适制备条件是:丙烯酸羟乙酯用量30%(占单体质量百分数),膨润土用量20%(对单体质量,下同),引发剂用量0.2%,交联剂用量0.02%,反应温度为65℃。该高吸水性复合材料的吸去离子水率达920g.g-1,吸0.9%NaCl溶液率为98g.g-1。

Polyacrylic acid（AA）-hydroxyethyl acrylate（HEA）/bentonite composite super absorbent materials were synthesized by aqueous solution polymerization.Effects of polymerization factors on the absorbency of the composite materials were studied.The obtained optimum polymerization conditions were that mass fraction of HEA 30%,mass fraction of bentonite to monomer 20%,mass fraction of initiator to monomer 0.2%,mass fraction of crosslinker to monomer 0.02%,reaction temperature 65℃.Absorption rates of the super absorbent composite material to distilled water and 0.9% NaCl solution were 920g·g-1 and 98 g·g-1.