干法预处理协同酯化改性制备高取代度苯甲酸淀粉酯及其性能调控

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关键词：干法预处理；苯甲酸淀粉酯；疏水性；热塑性；溶解性中图分类号：TS727 文献标识码：A DOI：10.11980/j.issn.0254-508X.2025.09.014

Preparationof Highly Substituted Starch Benzoate byDryPretreatment Combined with Esterificationand ItsProperty Control

LI JunLI ZhicongCHEN Zhenting SHAO Danrong YAO Xianchao*LIN Rihui* （ColegefChemistryndChemicalEngineeing，GuangxiKeyLabofPlysaccharideMateriasndModificationGuangxi Uniesityfor Nationalities，Nanning，Guangxi Zhuang Autonomous Region， ） （*E-mail： yaoxch@gxmzu. edu.cn； rihuilin@gxmzu.edu.cn）

Abstract：Usingcassachasastah，thsachasactivatedviadrypretreantfolowedbyansterficaonreactionwithben zoyl chloride at a molar ratio of 1：3 at 60∘C for 3h . The results showed that pretreatment effectively disrupted the dense crystalline structure fstarchandicreasdactivesitesesterfdproduct（BC-Seiedmorpholicaltasforatiofrosphecalgaest regular fragments，and its crystalline structure shifted from type A to type V. The product yield （86.68 % ） and degree of substitution （DS 1.036）ofBC-Sreaproiatel.5d.7isrspielyaoseofto-prereatedsple（Cwith terifying agent utilization rate of 34.5% . Additionally，BC-ST3 displayed excellnt hydrophobicity，thermoplasticity，and solubility，showcasing potential applications in biomaterials，biodegradable packaging，and composite materials.

Key words：dry pretreatment；starch benzoate；hydrophobicity；thermoplasticity；solubility

淀粉是一种来源广泛、价格低廉且具有绿色可再生性能的天然高分子材料，是众多研究领域的热点。（剩余16639字）