不同活化温度下粘胶基炭纤维的拉曼光谱研究  

Raman microspectroscopy on rayon-based carbon fibers activated at different temperatures

作　　者：程朝歌 石彦平[2] 陈师[2] 吴琪琳[1,2] 

机构地区：[1]纤维材料改性国家重点实验室,上海201620 [2]东华大学材料科学与工程学院,上海201620

出　　处：《炭素技术》2016年第1期11-14,共4页Carbon Techniques

基　　金：国家自然科学基金(60975059);上海市教育委员会科研创新重点项目(14zz069)

摘　　要：采用激光拉曼光谱技术研究了粘胶基炭纤维在不同活化温度(800,900,1 000℃)下所得活性炭纤维的表面微观结构,并用自制的样品旋转装置成功实现了拉曼旋转扫描。结果表明:随着活化温度的升高,炭纤维的石墨化程度逐渐提高,同时发现D峰和G峰的半高宽也逐渐增大,表明活化温度对表面孔洞缺陷和微晶分布均有影响,这与XRD的测试结果一致。利用拉曼光谱技术揭示了活性炭纤维表面微观结构的异质性。Laser Raman spectroscopy was employed to characterize the surface microstructure of rayon-based carbon fibers at different activated temperatures（800,900,1 000℃） with self-made device to realize sample rotation during Raman scanning procedure.The results showed that the graphitization degree of activated carbon fiber increased with the increasing activated temperatures.The full-widths at half maximum（FWHM） of D and G bands also increased gradually.These differences among the spectra demonstrated that the activated temperature had influences on the surface pores and the distribution of microcrystalline,which were calculated by X-ray diffraction method as well.The heterogeneity of surface microstructure of activated carbon fibers can be explored by laser Raman microspectroscopy.

关 键 词：活性炭纤维 微观结构 拉曼光谱 

分 类 号：TQ341.1[化学工程—化纤工业] O657.38[理学—分析化学]