论文部分内容阅读
将棉花秸秆粉末进行碱煮后,采用过硫酸钾(KSB)为引发剂、N,N′-亚甲基双丙烯酰胺(MBAM)为交联剂,使其与丙烯酸接枝共聚合成高吸水树脂,通过试验对比最终确定最佳条件为:碱煮棉花秸秆粉末与丙烯酸的质量比为1:8、过硫酸钾用量为单体质量的0.025、交联剂N,N’-亚甲基双丙烯酰胺(MBAM)用量为单体质量的0.083%、丙烯酸中和度为70%、反应时间为4 h、烘干温度为90℃。对最佳条件下制备的树脂进行了吸水倍率的测试,并且对预处理后的秸秆及接枝产物进行了红外谱图分析,结果表明,该树脂具有良好的吸水率,吸收蒸馏水达207倍,丙烯酸成功接枝在秸秆纤维素的主链上。
After the cotton straw powder was alkali-boiled, potassium persulfate (KSB) as initiator and N, N’-methylenebisacrylamide (MBAM) as cross-linking agent were used to graft copolymerize with cotton wool into superabsorbent , The optimal conditions were finally determined through the comparison of experiments: the mass ratio of alkali-boiled cotton straw powder to acrylic acid is 1: 8, the amount of potassium persulfate is 0.025, the crosslinking agent N, N’-methylenebis The amount of MBAM was 0.083%, the degree of neutralization of acrylic acid was 70%, the reaction time was 4 h and the drying temperature was 90 ℃. The water absorption ratio of the resin prepared under the optimal conditions was tested. The IR spectra of the pretreated straw and the grafted product were also analyzed. The results showed that the resin had a good water absorption, absorbed 207 times of distilled water, Acrylic acid grafted onto the backbone of straw cellulose successfully.