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采用浓硫酸磺化法制备了聚乙烯醇硫酸钠(SPS),以丙烯酸、淀粉和SPS为原料采用水溶液聚合法合成了淀粉接枝丙烯酸-聚乙烯醇硫酸钠互穿网络高吸水性树脂(SA-IP-SPS)。红外光谱、扫描电镜分析结果表明了产品互穿网络结构的形成。合成反应的最佳条件为:w(淀粉)=6.7%;反应温度:70℃;中和度(DN):90%;w(交联剂)=0.067%;w(引发剂)=0.27%;w(SPS)=8%。在优化的聚合条件下,产品的吸蒸馏水倍率和吸盐水倍率分别可达到962g/g和112g/g。
Poly (sodium laureth sulfate) (SPS) was prepared by sulfonation of concentrated sulfuric acid. The starch-grafted acrylic acid-poly (vinyl alcohol) sulfate sodium interpenetrating network superabsorbent resin (SA) was synthesized by aqueous solution polymerization using acrylic acid, starch and SPS as raw materials -IP-SPS). Infrared spectroscopy and scanning electron microscopy showed the formation of interpenetrating networks. The optimum conditions for the synthesis were as follows: w (starch) = 6.7%; reaction temperature: 70 ° C; degree of neutralization (DN): 90% w: crosslinker = 0.067% w: initiator = 0.27% ; w (SPS) = 8%. Under optimized polymerization conditions, the product’s distilled water draw ratio and brine draw ratio can reach 962g / g and 112g / g, respectively.