李俊,李智聪,陈震霆,邵丹蓉,姚先超,林日辉.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[J].中国造纸,2025,44(9):102-110 本文二维码信息
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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
Preparation of Highly Substituted Starch Benzoate by Dry Pretreatment Combined with Esterification and Its Property Control
收稿日期:2025-03-19  修订日期:2025-04-28
DOI:10.11980/j.issn.0254-508X.2025.09.014
关键词:  干法预处理  苯甲酸淀粉酯  疏水性  热塑性  溶解性
Key Words:dry pretreatment  starch benzoate  hydrophobicity  thermoplasticity  solubility
基金项目:国家自然科学基金资助项目(21766004);广西高校中青年教师科研基础能力提升项目(2023KY0175);广西民族大学科研基金资助项目(引进人才科研启动项目,2024KJQD06);广西民族大学研究生教育创新计划项目(gxmzu-chxs2024227)。
作者单位邮编
李俊 广西民族大学化学化工学院,广西多糖材料与改性重点实验室,广西南宁,530006 530006
李智聪 广西民族大学化学化工学院,广西多糖材料与改性重点实验室,广西南宁,530006 530006
陈震霆 广西民族大学化学化工学院,广西多糖材料与改性重点实验室,广西南宁,530006 530006
邵丹蓉 广西民族大学化学化工学院,广西多糖材料与改性重点实验室,广西南宁,530006 530006
姚先超* 广西民族大学化学化工学院,广西多糖材料与改性重点实验室,广西南宁,530006 530006
林日辉* 广西民族大学化学化工学院,广西多糖材料与改性重点实验室,广西南宁,530006 530006
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摘要:以木薯淀粉为原淀粉,采用干法预处理对淀粉进行活化,再与苯甲酰氯以物质的量比1∶3,在60 ℃下反应3 h,进行酯化反应。结果表明,预处理可有效去除淀粉致密的结晶结构,增加反应活性位点。酯化后的产物(BC-ST3),其形貌由原来的圆形变为无规则碎片状,晶体结构由A型转变为V型,且样品得率(86.68%)和取代度(1.036)分别约为未预处理样品(BC-ST)的1.5和1.7倍,酯化剂利用率达34.5%。此外,BC-ST3表现出优异的疏水性、热塑性和溶解性,具有在生物基材料、可降解包装材料和复合材料等领域的应用潜力。
Abstract:Using cassava starch as raw starch, the starch was activated via dry pretreatment, followed by an esterification reaction with benzoyl chloride at a molar ratio of 1∶3 at 60 ℃ for 3 h. The results showed that pretreatment effectively disrupted the dense crystalline structure of starch and increased reactive sites. The esterified product (BC-ST3) exhibited a morphological transformation from spherical granules to irregular fragments, and its crystalline structure shifted from type A to type V. The product yield (86.68%) and degree of substitution (DS = 1.036) of BC-ST3 were approximately 1.5 and 1.7 times higher, respectively, than those of the non-pretreated sample (BC-ST), with an esterifying agent utilization rate of 34.5%. Additionally, BC-ST3 displayed excellent hydrophobicity, thermoplasticity, and solubility, showcasing potential applications in biomaterials, biodegradable packaging, and composite materials.
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