响应面优化微波法制备芭蕉芋淀粉接枝丙烯酸高吸水性树脂工艺

研究响应曲面优化微波法制备芭蕉芋淀粉接枝丙烯酸高吸水性树脂的工艺。在单因素试验的基础上，采用响应曲面法研究单体用量、引发剂用量和单体中和度对树脂吸水倍率的影响，并对共聚物结构进行分析。结果表明，微波法制备芭蕉芋淀粉接枝丙烯酸高吸水性树脂的最佳工艺为单体丙烯酸与干淀粉比8.2:1(mL/g)、引发剂用量为干淀粉质量的2.8%、单体丙烯酸中和度80.1%时，此时树脂的吸水倍率为769g/g。红外扫描吸收谱表明，接枝共聚物中存在着羧基、酰胺基等特征性亲水性基团。

Optimization on Preparation Technology of Super Absorbent Resin Polymerized by Microwave with Gelatinized Starch from Canna edulis Ker and Acrylic Acid through Response Surface Methodology

The synthetic conditions of super absorbent resin from Canna edulis Ker starch and acrylic acid under microwave irradiation were studied.Based on single factor test,response surface methodology(RSM) was applied to investigate the effects of ratios of acrylic acid to starch,dose of initiator,neutralization ratio of acrylic acid by NaOH on the water-absorbent rate.The structure of co-polymers have been analyzed.The optimum preparation conditions were mass ratio of monomer to starch at 8.2:1,2.8% initiator(accounts for the proportion of starch quality),neutralization ratio of acrylic acid at 80.1%.In this case,the water absorbency was 769 g/g.Infrared scanning spectra indicated that co-polymer had characteristic hydrophilic group such as carboxyl group,amide group.