作　　者： ; ;

机构地区： 华南理工大学轻工与食品学院制浆造纸工程国家重点实验室

出　　处： 《精细石油化工》 2000年第5期35-38,共4页

摘　　要： 以玉米淀粉为基体 ,通过优选交联工艺 ,按玉米淀粉与环氧氯丙烷的摩尔比为 6 .0∶ 1投料 ,在常温、碱性条件下制备了交联淀粉。然后以 Cr3+为吸附质 ,通过研究吸附剂的吸附性能来优化接枝反应条件 ,结果表明将交联淀粉∶氯乙酸 =1∶ 1 .5 (摩尔比 ) ,在 6 5℃下接枝反应 6 0 min,可制得吸附性能好、水不溶性的羧甲基淀粉吸附剂。 The crosslinked starch was first prepared with the mixture of corn starch and epichlorohydrin under basic condition at ambient temperature by optimizing the crosslink procedure. The molar ratio of corn starch to epichlorohydrin was 6.0∶1. Then the study on the adsorption capacity of the adsorbent was conducted to optimize the graft procedure by employing Cr 3+ ion as the adsorbate. The waterinsoluble carboxymethyl starch (CMS) adsorbent, containing excellent adsorption capacity, was ultimately prepared by grafting 1.5 mole chloroacetic acid onto the 1.0 mole crosslinked starch at 65 ℃ for 60 min.

关 键 词： 玉米淀粉 羧甲基淀粉 交联 接枝 吸附剂

领　　域： [化学工程]