中国塑料 ›› 2025, Vol. 39 ›› Issue (12): 56-63.DOI: 10.19491/j.issn.1001-9278.2025.12.010

• 材料与性能 • 上一篇    下一篇

引发剂对HDDA接枝PBS结构和性能的影响

柯俊沐(), 林渊智, 苏羽航, 余立, 黄益飞, 吴炳林, 杨文卿()   

  1. 福建技术师范学院,福建 福清 350300
  • 收稿日期:2024-12-30 出版日期:2025-12-26 发布日期:2025-12-22
  • 通讯作者: 杨文卿,男,副教授/国家注册环保工程师,主要从事固体废物资源化及环境修复方面的研究, yangwq@fpnu.edu.cn
    E-mail:602534600@qq.com;yangwq@fpnu.edu.cn
  • 作者简介:柯俊沐,男,全国专利代理师/工程师,研究方向为功能材料,602534600@qq.com
  • 基金资助:
    福建省科技计划“探究PBS膜熔体增强机制及其对膜周期影响”(2023J011123);福建省教育厅中青年项目(JAT220254);2024年大学生创新训练计划项目(DC24052)

Effect of initiator on the structure and properties of PBS⁃g⁃HDDA

KE Junmu(), LIN Yuanzhi, SU Yuhang, YU Li, HUANG Yifei, WU Binglin, YANG Wenqing()   

  1. Fujian Polytechnic Normal University,Fuqing 350300,China
  • Received:2024-12-30 Online:2025-12-26 Published:2025-12-22
  • Contact: YANG Wenqing E-mail:602534600@qq.com;yangwq@fpnu.edu.cn

摘要:

以聚丁二酸丁二醇酯(PBS)为基体,通过反应挤出的方法,在过氧化苯甲酰(BPO)引发下,将1,6⁃己二酯二丙烯酸酯(HDDA)接枝在PBS的主链上,采用红外光谱分析仪、核磁共振氢谱仪、转矩流变仪、凝胶渗透色谱法、差示扫描量热仪、X射线衍射仪、冲击试验机、拉力试验机等表征手段对样品进行测试与分析。结果表明,HDDA成功接枝到PBS主链上,无凝胶化,即长支链PBS分子链间形成三维物理缠结;当PBS∶HDDA∶BPO=100∶3∶0.3时,数据在TQ analyst软件中建立模型,测其接枝率0.83 %;长支链的引入,降低了PBS的结晶度,分子链间的物理缠结点可作为“成核点”,促进结晶;当HDDA为3份时,扭矩由1.73 N·m提高至8.17 N·m,数均分子量Mn为44 825 g/moL,重均分子量Mw为184 921 g/moL,改善了PBS的力学性能,提高了熔体强度。

关键词: 1,6?己二酯二丙烯酸酯, 聚丁二酸丁二醇酯, 过氧化苯甲酰, 反应挤出, 熔体强度

Abstract:

Hexanediol diacrylate (HDDA) was grafted onto poly(butylene succinate) (PBS) using dibenzoyl peroxide (BPO) as an initiator via reactive melt grafting. The successful grafting of HDDA without gelation was confirmed by Fourier⁃transform infrared spectroscopy, ¹H⁃NMR, and gel content analysis. A quantitative model established in TQ Analyst software (correlation coefficient=0.989 6) determined a grafting rate of 0.83 % under optimal conditions (100 ppm PBS, 3 phr HDDA, 0.3 phr BPO). The introduction of long⁃branched chains reduced the crystallinity of PBS, as characterized by differential scanning calorimetry and wide⁃angle X⁃ray diffraction, while also providing physical entanglement points that promoted nucleation. The grafting process significantly increased the melt strength, evidenced by a rise in torque from 1.73 N·m to 8.17 N·m. Gel permeation chromatography revealed an increase in molecular weight, resulting in a number⁃average molecular weight of 44 825 g/mol and a weight⁃average molecular weight of 184,921 g/mol. Consequently, the modified PBS exhibited improved mechanical properties, demonstrating that grafting with optimal concentrations of HDDA and BPO is an effective strategy for enhancing the performance of PBS.

Key words: hexanediol diacrylate, poly(butylene succinate), dibenzoyl peroxide, reaction extrusion, melt strength

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