拉曼光谱分析炭纤维表面的微观结构

任桂知; 陈淙洁; 邓李慧; 全海宇; 吕永根; 吴琪琳

doi:10.1016/S1872-5805(15)60202-5

拉曼光谱分析炭纤维表面的微观结构

doi: 10.1016/S1872-5805(15)60202-5

1.
纤维材料改性国家重点实验室, 上海 201620;
2.
Texas Tech University, Department of Chemistry and Biochemistry, Lubbock, Texas 79409, USA;
3.
东华大学材料学院, 上海 201620

基金项目: 国家自然科学基金(60975059);同济大学先进土木工程材料教育部重点实验室(201301);上海市教育委员会科研创新重点项目(14ZZ069).

详细信息

中图分类号: TQ342.⁺74
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- 文章访问数: 469
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出版历程
- 收稿日期: 2015-03-08
- 录用日期: 2015-11-10
- 修回日期: 2015-10-08
- 刊出日期: 2015-10-28

Microstructural heterogeneity on the cylindrical surface of carbon fibers analyzed by Raman spectroscopy

1.
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai 201620, China;
2.
Texas Tech University, Department of Chemistry and Biochemistry, Lubbock, Texas 79409, USA;
3.
College of Materials Science and Engineering, Donghua University, Shanghai 201620, China

Funds: National Natural Science Foundation of China(60975059);Key Laboratory of Advanced Civil Engineering Materials,Tongji University(201301);Research and Innovation Project of Shanghai Municipal Education Commission(14ZZ069).

摘要

摘要: 采用拉曼光谱技术研究了PAN基炭纤维表面微观结构的异质性。借助于自制的旋装装置,实现了单根炭纤维纤维的旋转,利用拉曼面扫描技术获得了纤维整个外表面的拉曼光谱。通过分峰数据处理,得到I_I/I_G、I_A/I_G、I_Di/I_G与I_D/I_G的分布,发现这些结构参数具有较大的波动性,说明炭纤维表面微观结构是不均匀的。进一步也计算出纤维表面的晶粒尺寸L_a在0.7-2.9 nm间变化,结构缺陷有沿着纤维轴向取向的趋势。通过拉曼旋转扫描,揭示出了炭纤维表面的复杂微观结构。
- 拉曼光谱 /
- 炭纤维 /
- 表面微观结构
Abstract: A polyacrylonitrile-based carbon fiber monofilament was characterized by a confocal micro Raman spectrometer with the aid of a stage that allowed the axial rotation of the fiber so that the whole surface area could be examined. Results indicate that disorder is localized and aligned along the axial direction of the fiber. L_a values in defective regions are relatively lower than in others. The changes in the amount of amorphous carbon in different regions are significant.
- Raman spectroscopy /
- Carbon fiber /
- Surface microstructure

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