全文下载:
202601014.pdf
文章编号: 1672-6987(2026)01-0101-07 DOI: 10.16351/j.1672-6987.2026.01.014
栾振南, 祝夫昊, 阮成煜, 王庆国*(青岛科技大学 高分子科学与工程学院, 山东 青岛 266042)
摘要: 以对苯二甲酸二甲酯、丁二酸、丁二醇为原料,应用酯交换反应和酯化缩聚反应,设计制备了3种不同重复结构单元数量比例的聚丁二酸/对苯二甲酸丁二醇酯(PBST)预聚体,然后通过扩链反应制备了高分子量的PBST。PBST预聚体的特性黏数分别由0.40、0.38 、0.57 dL · g-1增加到扩链后PBST的2.00、1.65、1.35 dL · g-1。差示扫描量热分析表明,PBST的熔点、结晶度随PBST分子中苯环含量的增加而降低,PBST3/7的熔点由PBST1/9的103.0 ℃降低至72.7 ℃;PBST3/7的结晶度由PBST1/9的35.2%降低至15.5%;力学性能及生物降解性能测试结果表明,PBST1/9的拉伸强度达48.0 MPa,PBST1/9在脂肪酶溶液中40 d的降解率为55.8%。
关键词: 生物降解塑料; 聚丁二酸/对苯二甲酸丁二醇酯; 扩链; 结晶性能; 降解性能
中图分类号: O 631 文献标志码: A
引用格式: 栾振南, 祝夫昊, 阮成煜, 等. 扩链法制备聚丁二酸/对苯二甲酸丁二醇酯及其性能[J]. 青岛科技大学学报(自然科学版), 2026, 47(1): 101-107.
LUAN Zhennan, ZHU Fuhao, RUAN Chengyu, et al. Preparation and properties of polysuccinic acid/butylene terephthalate by chain extension method[J]. Journal of Qingdao University of Science and Technology(Natural Science Edition), 2026, 47(1): -.
Preparation and Properties of Polysuccinic Acid/Butylene Terephthalate by Chain Extension Method
LUAN Zhennan, ZHU Fuhao, RUAN Chengyu, WANG Qingguo(College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: In this paper, using dimethyl terephthalate, succinic acid, and butanediol as raw materials, three types of polysuccinic acid/butanediol terephthalate (PBST) prepolymers with different repetition unit number ratios were designed and prepared using transesterification and esterification polycondensation reactions. Then, high molecular weight PBST was prepared through chain extension reactions. The intrinsic viscosity of PBST prepolymers increased from 0.40, 0.38, and 0.57 dL · g-1, respectively, to 2.00, 1.65, and 1.35 dL · g-1 of PBST after chain extension. The DSC spectrum shows that the melting point and crystallinity of PBST decrease with the increase of aromatic ring content in PBST molecules, and the melting point of PBST3/7 decreases from 103.0 ℃ to 72.7 ℃ of PBST1/9; The crystallinity of PBST3/7 decreased from 35.2% of PBST1/9 to 15.5%; The test results of mechanical properties and biodegradability showed that the tensile strength of PBST1/9 reached 48.0 MPa, and the degradation rate of PBST1/9 in lipase solution for 40 d was 55.8%.
Key words: biodegradable plastics; polysuccinic acid/butylene terephthalate; chain extension; crystallization properties; degradability
收稿日期: 2025-03-30
基金项目: 国家自然科学基金项目(51773104, 51373085);山东省重点研发项目(2017GGX20138).
作者简介: 栾振南(1997—),男,硕士研究生. * 通信联系人.