中国塑料 ›› 2025, Vol. 39 ›› Issue (10): 1-5.DOI: 10.19491/j.issn.1001-9278.2025.10.001

• 材料与性能 •    

癸二酸二苯甲酰肼对聚(丁二酸乙二醇酯⁃共⁃草酸乙二醇酯)结晶性能的影响研究

魏雪巍1, 张馨文2, 叶海木3, 徐军1, 郭宝华1()   

  1. 1.清华大学化学工程系,北京 100084
    2.京东方科技集团股份有限公司,北京 100016
    3.中国石油大学(北京) 新能源与材料学院,北京 102249
  • 收稿日期:2025-03-26 出版日期:2025-10-26 发布日期:2025-10-21
  • 通讯作者: 郭宝华(1963—),男,教授,从事生物可降解聚酯合成与功能化、聚合物合金材料与纳米复合材料、医用组织工程材料等研究,bhguo@mail.tsinghua.edu.cn
    E-mail:bhguo@mail.tsinghua.edu.cn
  • 基金资助:
    国家重大科技专项(2024ZD0603600)

Effect of dibenzoyl hydrazide sebacic acid on crystallization properties of poly(ethylene succinate⁃co⁃ethylene oxalate)

WEI Xuewei1, ZHANG Xinwen2, YE Haimu3, XU Jun1, GUO Baohua1()   

  1. 1.Department of Chemical Engineering,Tsinghua University,Beijing 100084,China
    2.BOE Technology Group Co,Ltd,Beijing 100016,China
    3.College of New Energy and Materials,China University of Petroleum,Beijing 102249,China,China
  • Received:2025-03-26 Online:2025-10-26 Published:2025-10-21
  • Contact: GUO Baohua E-mail:bhguo@mail.tsinghua.edu.cn

摘要:

聚(丁二酸乙二醇酯⁃共⁃草酸乙二醇酯)(PESOx)作为一种环境友好型可生物降解聚酯,因其共聚改性后结晶能力下降而限制了实际应用。为改善其结晶性能,本研究通过溶液共混法引入有机小分子成核剂癸二酸二苯甲酰肼(TMC⁃300),并探究了其对PESOx结晶行为的影响。研究表明,TMC⁃300在不改变PESOx的晶体结构与热稳定性的前提下,可显著提高结晶温度(Tc)和结晶焓(ΔHc),缩短半结晶时间(t1/2),并加快总结晶速率。等温结晶动力学分析显示,TMC⁃300的结晶促进效果随添加量先增强后减弱,最佳添加量为1 %(质量分数,下同)。偏光显微观察结果进一步证实,TMC⁃300可提高成核密度,缩小球晶尺寸并加快结晶速率。

关键词: 聚(丁二酸乙二醇酯?共?草酸乙二醇酯), 癸二酸二苯甲酰肼, 结晶行为, 成核剂, 结晶动力学

Abstract:

Poly(ethylene succinate⁃co⁃ethylene oxalate) (PESOx) is an environmentally friendly, biodegradable polyester whose practical application is hindered by its slow crystallization kinetics following copolymerization. To address this drawback, we incorporated the organic nucleating agent dibenzoyl hydrazide sebacic acid (TMC⁃300) into PESOx via solution blending. While TMC⁃300 did not alter the crystal structure or thermal stability of the polymer, it remarkably enhanced its crystallization properties. The nucleating agent significantly increased the crystallization temperature and enthalpy, shortened the half⁃crystallization time, and accelerated the overall crystallization rate. Isothermal crystallization kinetics indicated that the efficacy of TMC⁃300 is concentration⁃dependent, with an optimal promotion effect observed at 1 wt%, suggesting a saturation concentration within the polymer matrix. Polarized optical microscopy confirmed a substantial increase in nucleation density, leading to smaller spherulite sizes and a faster crystallization rate. These findings demonstrate TMC⁃300's effectiveness in improving the processability of PESOx for commercial applications.

Key words: poly(ethylene succinate?co?ethylene oxalate), dibenzoyl hydrazide sebacic acid, crystallization behavior, nucleating agent, crystallization kinetics

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