甘锋,宋滨强,林海鹏
GAN Feng,SONG Bin-qiang,LIN Hai-peng

• 1:五邑大学纺织材料与工程学院

摘要(Abstract)：

为解决含芳杂环结构的聚酰亚胺(PI)纤维的接枝问题，采用共辐照法对具有不同芳杂环结构的PI纤维进行辐照改性，通过红外光谱、X射线电子能谱、吸水率分析等探究辐照接枝处理对含芳杂环结构的PI纤维结构与性能的影响。研究发现：含苯并咪唑结构的PI纤维表现出可辐照接枝性，其辐照接枝率可达5.7%；而不含杂环结构的PI纤维则难以辐照接枝；红外光谱与X射线电子能谱分析表明，丙烯酸单体接枝位点为PI纤维分子中的苯并咪唑杂环；经辐照改性后，所得改性PI纤维的亲水性及染料吸附能力得到有效改善，表现出在复合材料及吸附等领域巨大的应用潜力。
In order to solve the grafting problem of polyimide(PI) fibers containing aromatic heterocyclic structures. The PI fibers with different aromatic beterocyclic structures were modified by co-irradiation method. The effects of irradiation grafting treatment on the structure and properties of PI fibers with aromatic heterocyclic structure were analyzed by FTIR, XPS and water absorption analysis. The study PI fibers with benzimidazole units can be grafting via irradiation treatment, and the irradiation grafting rate was up to5.7%, while PI fibers without heterocyclic structure were difficult to be irradiated grafted. FTIR and XPS analysis showed that the grafting site of acrylic monomer was benzimidazole units in PI fibers. The hydrophilicity and dye adsorption capacity of the modified PI fiber was effectively improved, showed the application potential in the fields of composites and dye adsorption.

关键词(KeyWords)： 聚酰亚胺纤维;苯并咪唑;辐照接枝
polyimide fiber;benzimidazole;γ-ray irradiation

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52103010);; 广东省基础与应用基础研究基金(2020A1515110897);; 江门市基础与应用基础研究重点项目(2021030102790006114);; 广东省科技厅大专项项目(2019-252);; 五邑大学博士科研启动基金(BSQD2007)

作者(Author): 甘锋,宋滨强,林海鹏
GAN Feng,SONG Bin-qiang,LIN Hai-peng

DOI: 10.16090/j.cnki.hcxw.2022.03.001

参考文献(References)：

• [1]陈英韬,张清华.聚酰亚胺纤维的制备与应用研究进展[J].高分子通报, 2013(10):71-79.
• [2] ZHANG M, NIU H, WU D. Polyimide fibers with high strength and high modulus:preparation, structures, properties, and applications[J].Macromolecular Rapid Communications, 2018, 39(20):1800141.
• [3] ZHANG Q H, DONG J, WU D Z. Advanced polyimide materials:chapter 2. advanced polyimide fibers[M]. Elsevier, 2018:67-92.
• [4] KITAGAWA T, MURASE H, YABUKI K. Morphological study on poly-p-phenylenebenzobisoxazole(PBO)fiber[J]. Journal of Polymer Science Part B:Polymer Physics, 1998, 36(1):39-48.
• [5] ZHANG T, JIN J H, YANG S L, et al. Preparation and properties of novel PIPD fibers[J]. Chinese Science Bulletin, 2010, 55(36):4203-4207.
• [6] YIN C, DONG J, ZHANG Z, et al. Structure and properties of polyimide fibers containing benzimidazole and amide units[J]. Journal of Polymer Science Part B:Polymer Physics, 2015, 53(3):183-191.
• [7] YIN C, DONG J, ZHANG D, et al. Enhanced mechanical and hydrophobic properties of polyimide fibers containing benzimidazole and benzoxazole units[J]. European Polymer Journal, 2015, 67:88-98.
• [8] GAN F, DONG J, TAN W, et al. Fabrication and characterization of co-polyimide fibers containing pyrimidine units[J]. Journal of Materials Science, 2017, 52(16):9895-9906.
• [9] NIU H, QI S, HAN E, et al. Fabrication of high-performance copolyimide fibers from 3, 3', 4, 4'-biphenyltetracarboxylic dianhydride, pphenylenediamine and 2-(4-aminophenyl)-6-amino-4(3H)-quinazolinone[J]. Materials Letters, 2012, 89:63-65.
• [10] JANG B Z, PATER R H, SOUCEK M D, et al. Plastic deformation mechanisms in polyimide resins and their semi-interpenetrating networks[J]. Journal of Polymer Science Part B:Polymer Physics, 1992, 30(7):643-654.
• [11] QIN S, TU Y, TAN T, et al. The effects ofγ-ray on charging behaviour using polyimide[J]. Journal of Physics D:Applied Physics, 2018, 51(24):245302.
• [12] SHEN Z, LIU Y, DAI W. Mechanical property of polyimide film in space radiation environments:iop conference series:materials science and engineering[C]. IOP Publishing, 2018, 381(1):012108.
• [13] SENER U, PAREKH B, ENTENBERG A, et al. Surface modification of poly(biphenyl dianhydride-para-phenylene diamine)(BPDA-PDA)polyimide by UV photo-oxidation[J]. Journal of Adhesion Science and Technology, 2006, 20(4):319-334.
• [14] XU Y, WANG S, LI Z, et al. Polyimide fibers prepared by dry-spinning process:imidization degree and mechanical properties[J]. Journal of Materials Science, 2013, 48(22):7863-7868.
• [15] YANG W, LIU F, ZHANG J, et al. Influence of thermal treatment on the structure and mechanical properties of one aromatic BPDA-PDA polyimide fiber[J]. European Polymer Journal, 2017, 96:429-442.
• [16] GAN F, DONG J, XU X, et al. Preparation of thermally rearranged poly(benzoxazole-co-imide)membranes containing heteroaromatic moieties for CO2/CH4 separation[J]. Polymer, 2019, 185:121945.