2023·13科研开发165ModernChemicalResearch当代化工研究2023·13科研开发165ModernChemicalResearch当代化工研究马铃薯淀粉/羧甲基纤维素复合保水剂的制备及性能研究＊吴淑茗*张萍婷张宇江思锦徐惠林（闽南科技学院生命科学与化学学院福建362332）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pH=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。关键词：复合多糖；保水剂；吸液性能；尿素负载与缓释中图分类号：TQ332文献标识码：ADOI：10.20087/j.cnki.1672-8114.2023.13.055StudyonPreparationandPropertiesofPotatoStarch/SodiumCarboxymethylCompositeWater-retainingAgentWuShuming*,ZhangPingting,ZhangYu,JiangSijin,XuHuilin(DepartmentofLifeSciencesandChemistry,MinnanScienceandTechnologyUniversity,Fujian,362332)Abstract：Usingsodiumcarboxymethylcelluloseandpotatostarchasgraftsubstrates,acrylicacid(AA)andacrylamide(AM)asmonomers,compoundwater-retainingagentwasprepared.Theabilitiesforproductwerediscussed.Theresultsshowedthatthecoatingmaterialreachedaliquidabsorptionequilibriumwithin120minutes,withawaterabsorptionratioof336.30g·g-1.IthasgoodliquidabsorptionperformancebetweenpH=3～11andgoodresistancetoacidandalkali.At15℃,thewaterretentionratereaches70.12%,withgoodwaterretentionperformance;afterrepeatedwaterabsorptionforfivetimes,therecoveryratereached59.75%,indicatingthatthecoatingmaterialhasgoodreusability.Theloadingrateofureacanreach90.08%,andthereleaseratecanreach99.87%.Ithasexcellenturealoadingandreleasecapabilities.Keywords：complexpolysaccharides；waterretainingagent；liquidabsorptionperformance；urealoadandslow-release我国是人口大国同时也是农业大国，化肥用量位居世界前三[1]。随着化肥的大量使用也暴露出了其损耗严重、污染环境以及所生产食品的安全等问题，绿色环保且...
