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K2S2O8-Na2S2O3引发淀粉与丙烯酸接枝产物吸水性能的主要影响因素

Lin SUN,Nai-qun LU,Cun-guo WANG,Tao YUAN, Lin LIN,Xiao-chen DONG,Xian-guo DONG,Hong-jie XIAO

Science & Technology in Chemical Industry（2008）

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Abstract
以玉米淀粉和丙烯酸为主要原料,采用溶液聚合的方法,制备了淀粉与丙烯酸接枝共聚物,用FTIR等方法对共聚产物结构进行了表征.研究了在过硫酸钾-硫代硫酸钠组成的氧化-还原引发体系中,引发剂、交联剂不同浓度及丙烯酸不同中和度等因素对共聚产物吸水性能的影响.实验结果表明采用K2S2O8-Na2S2O3引发体系,通过控制引发剂、交联剂浓度,接枝产物吸去离子水可达920 g/g;采用玉米粉代替玉米淀粉与丙烯酸接枝共聚,产物吸去离子水可达870 g/g;这些实验结果进一步提高了吸水树脂的吸水能力.
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Key words
Superabsorbent,Graft copolymer,K_2S_2O_8,Acrylic acid,Starch
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