| 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 |
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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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