马铃薯淀粉/羧甲基纤维素复合保水剂的制备及性能研究  

Study on Preparation and Properties of Potato Starch/Sodium Carboxymethyl Composite Water-retaining Agent

作　　者：吴淑茗 张萍婷 张宇 江思锦 徐惠林 Wu Shuming;Zhang Pingting;Zhang Yu;Jiang Sijin;Xu Huilin(Department of Life Sciences and Chemistry,Minnan Science and Technology University,Fujian,362332)

机构地区：[1]闽南科技学院生命科学与化学学院,福建362332

出　　处：《当代化工研究》2023年第13期165-167,共3页Modern Chemical Research

基　　金：福建省中青年教师教育科研项目“CTS-AA-PULL半互穿网络凝胶的制备及吸附性能的研究”(项目编号:JAT200981);福建省大学生创新创业训练计划“聚电解质复合膜CMC-PVA-CTS的制备及性能研究”(项目编号:S202012992026);闽南科技学院教改项目“基础化学课程中融入课程思政理念的混合式教学模式探索——以无机及分析化学例”(项目编号:MKJG-2020-010);闽南科技学院新工科研究与实践项目“新工科视域下应用型本科实验教学改革与实践——以应用化学专业为例”(项目编号:MKXGK-2021-06)。

摘　　要：以羧甲基纤维素钠和马铃薯淀粉为接枝底物,丙烯酸(AA)及丙烯酰胺(AM)为单体,制备马铃薯淀粉/羧甲基纤维素钠复合保水剂,探讨保水剂各方面的性能。结果显示:保水剂于120min达到吸液平衡,吸水倍率为336.30g·g^(-1)。在p H=3~11之间都有较好的吸液性能,耐酸碱性良好。在15℃状态下保水率达70.12%,具有良好的保水性能;重复吸水五次后恢复率达59.75%,表明材料具有良好的重复利用性能。尿素的负载率可达90.08%,释放率高达99.87%,具有优异的尿素负载与释放能力。Using sodium carboxymethyl cellulose and potato starch as graft substrates,acrylic acid(AA)and acrylamide(AM)as monomers,compound water-retaining agent was prepared.The abilities for product were discussed.The results showed that the coating material reached a liquid absorption equilibrium within 120 minutes,with a water absorption ratio of 336.30 g·g-1.It has good liquid absorption performance between pH=3~11 and good resistance to acid and alkali.At 15℃,the water retention rate reaches 70.12%,with good water retention performance;after repeated water absorption for five times,the recovery rate reached 59.75%,indicating that the coating material has good reusability.The loading rate of urea can reach 90.08%,and the release rate can reach 99.87%.It has excellent urea loading and release capabilities.

关 键 词：复合多糖 保水剂 吸液性能 尿素负载与缓释 

分 类 号：TQ332[化学工程—橡胶工业]