复配淀粉基高吸水性树脂的制备

Preparation of Compound Starch-based High Water-absorbing Resin

采用氧化淀粉-丙烯酸-AMPs接枝共聚物和交联羧甲基淀粉进行复配，将两种原料按配比经混合、糊化、制片、粉碎、筛分制得复配高吸水性树脂成品。试验表明，最佳制备条件为：氧化淀粉-丙烯酸-AMPs接枝共聚物与交联羧甲基淀粉的质量比为8，糊化时的加水量为500g/g，糊化25min。制片温度为150℃。该产品将两种淀粉组分的优缺点互补，生产成本低、安全性好，吸生理盐水的倍率为60～100倍，能在15min内全部被酶解。

Oxidized starch erylie acid AMPS graft copolymer and emsslinked earboxymethyl starch were compounded. Two kinds of materials were used to prepare a kind of Compound high water-absorbing resin production through mixing, gelatinizing, making section, crushing and sieving by certain proportions. The results showed that the optimum preparation conditions were as follows： the mass ratio of oxidized starch-erylie acid-AMPS graft eopolymer to crosslinked carboxymethyl starch was 8, water addition quantity for gelatinization was 500 g/g, the time of gelatinization was 25 min, making section temperature was 150 ℃. This product had the complementary feature of advantages and disadvantages of 2 kinds of starch ingredients and had low production cost and good safety. Its absorbency for physiological brine was 60 - 100 g/g and it could entirely be hydrolyzed by enzyme in 15 min.