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甲基丙烯酸缩水甘油酯表面改性聚乙烯醇纤维表征及其对热塑性淀粉力学性能的影响

秦文博 马宏鹏 郭斌 李盘欣

秦文博, 马宏鹏, 郭斌, 等. 甲基丙烯酸缩水甘油酯表面改性聚乙烯醇纤维表征及其对热塑性淀粉力学性能的影响[J]. 复合材料学报, 2023, 40(5): 2621-2627. doi: 10.13801/j.cnki.fhclxb.20220704.002
引用本文: 秦文博, 马宏鹏, 郭斌, 等. 甲基丙烯酸缩水甘油酯表面改性聚乙烯醇纤维表征及其对热塑性淀粉力学性能的影响[J]. 复合材料学报, 2023, 40(5): 2621-2627. doi: 10.13801/j.cnki.fhclxb.20220704.002
QIN Wenbo, MA Hongpeng, GUO Bin, et al. Characterization of glycidyl methacrylate modified polyvinyl alcohol fiber and its effect on mechanical properties of thermoplastic starch[J]. Acta Materiae Compositae Sinica, 2023, 40(5): 2621-2627. doi: 10.13801/j.cnki.fhclxb.20220704.002
Citation: QIN Wenbo, MA Hongpeng, GUO Bin, et al. Characterization of glycidyl methacrylate modified polyvinyl alcohol fiber and its effect on mechanical properties of thermoplastic starch[J]. Acta Materiae Compositae Sinica, 2023, 40(5): 2621-2627. doi: 10.13801/j.cnki.fhclxb.20220704.002

甲基丙烯酸缩水甘油酯表面改性聚乙烯醇纤维表征及其对热塑性淀粉力学性能的影响

doi: 10.13801/j.cnki.fhclxb.20220704.002
基金项目: 江苏省政府留学基金;南京林业大学“青年拔尖人才”;江苏省研究生科研与实践创新计划项目(SJCX22_0318)Jiangsu Government Scholarship for Overseas Studies; Nanjing Forestry University Yong Top Talent Program; Postgraduate Research & Practice Innovation Program of Jiangsu Province (SJCX22_0318)
详细信息
    通讯作者:

    郭斌,博士,教授,硕士生导师,研究方向为纤维增强复合材料 E-mail: gbm@ustc.edu

  • 中图分类号: TQ321.2;TQ342.41

Characterization of glycidyl methacrylate modified polyvinyl alcohol fiber and its effect on mechanical properties of thermoplastic starch

  • 摘要: 以天然淀粉为原料制备的热塑性淀粉(TPS)具有可完全生物降解及与传统塑料类似的热塑加工性能,但力学性能和耐水性能较差限制了其发展。本文首先用含有环氧和乙烯基团的甲基丙烯酸缩水甘油酯(GMA)在可生物降解的聚乙烯醇纤维(PVAF)表面接枝改性,进一步经过双螺杆挤出加工过程,使淀粉大分子上的羟基和PVAF表面接枝GMA (GMA-PVAF)中的环氧基团发生化学反应,形成交联结构,从而提高热塑性淀粉塑料的力学性能。结果表明:GMA-PVAF出现了明显的包覆层,具有GMA中酯羰基和环氧基团的特征红外吸收峰,结晶度显著降低,玻璃化转变温度由95.8℃提高到100.7℃,热重分析计算表明包覆层质量分数约为8.77wt%;当GMA-PVAF的含量为1.5wt%时,复合材料GMA-PVAF/TPS的拉伸强度由纯TPS的3.00 MPa提高到4.99 MPa,断裂伸长率为146.84%,弯曲强度由1.82 MPa提高到11.62 MPa,力学性能显著提高。

     

  • 图  1  聚乙烯醇纤维(PVAF)表面接枝甲基丙烯酸缩水甘油酯(GMA)并增强热塑性淀粉(TPS)的反应机制

    Figure  1.  Mechanism of grafting glycyl methacrylate (GMA) onto polyvinyl alcohol fiber (PVAF) and reacted with thermoplastic starch (TPS)

    图  2  PVAF和GMA-PVAF的的FTIR图谱

    Figure  2.  FTIR spectra of PVAF and GMA-PVAF

    图  3  PVAF和GMA-PVAF的XRD图谱

    Figure  3.  XRD patterns of PVAF and GMA-PVAF

    图  4  PVAF和GMA-PVAF的SEM图像:(a) 1000倍放大的PVAF;(b) 1000倍放大的GMA-PVAF;(c) 4000倍放大的GMA-PVAF

    Figure  4.  SEM images of PVAF and GMA-PVAF: (a) 1000 times magnification of PVAF; (b) 1000 times magnification of GMA-PVAF; (c) 4000 times magnification of GMA-PVAF

    图  5  PVAF和GMA-PVAF的DCS曲线 (a)、TG和DTG曲线 (b)

    Figure  5.  DCS curves (a), TG and DTG curves (b) of PVAF and GMA-PVAF

    图  6  不同含量GMA-PVAF增强TPS的拉伸性能 (a) 和弯曲性能( b)

    Figure  6.  Tensile properties (a) and bending properties (b) of TPS reinforced with different content of GMA-PVAF

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出版历程
  • 收稿日期:  2022-05-14
  • 修回日期:  2022-06-21
  • 录用日期:  2022-06-24
  • 网络出版日期:  2022-07-05
  • 刊出日期:  2023-05-15

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