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XPS,AFM研究沥青基碳纤维电化学表面处理过程的机制
引用本文:王成忠,杨小平,于运花,刘承坤.XPS,AFM研究沥青基碳纤维电化学表面处理过程的机制[J].复合材料学报,2002,19(5):28-32.
作者姓名:王成忠  杨小平  于运花  刘承坤
作者单位:1. 北京化工大学,碳纤维复合材料研究所,北京,100029
2. 韩国忠南大学,化学工程系,韩国大田,305-764
基金项目:中韩政府间合作项目 (1996~ 2 0 0 0 )
摘    要:对各向同性沥青基碳纤维进行电化学氧化表面处理,用XPS,AFM分析了碳纤维表面含氧官能团和表面微观形貌的变化过程。实验结果表明:电化学氧化处理是表面碳及其含氧官能团逐步被氧化成羧基和CO2的过程。氧化处理首先是使碳纤维表面变得更光滑,持续氧化后才会出现沟槽,SEM的分辨率不足以表征碳纤维电化学氧化前后的表面形貌变化,而采用AFM可在纳米尺度上表征碳纤维在电化学氧化过程中的表面形貌变化。AFM和XPS的结合可表征碳纤维电化学氧化表面处理的进程。

关 键 词:碳纤维  电化学氧化  AFM
文章编号:1000-3851(2002)05-0028-05
收稿时间:2001-03-14
修稿时间:2001年3月14日

STUDY ON THE MECHANISM OF ELECTROCHEMICAL OXIDIZED PITCH-BASED CARBON FIBER BY XPS AND AFM
WANG Cheng-zhong,YANG Xiao-ping,YU Yun-hua,Ryu Seung-kon.STUDY ON THE MECHANISM OF ELECTROCHEMICAL OXIDIZED PITCH-BASED CARBON FIBER BY XPS AND AFM[J].Acta Materiae Compositae Sinica,2002,19(5):28-32.
Authors:WANG Cheng-zhong  YANG Xiao-ping  YU Yun-hua  Ryu Seung-kon
Affiliation:1. Institute of Carbon Fiber and Composites, Beijing University of Chemical Technology, Beijing100029,China; 2. Dept. of Chem. Eng., Chungnam National Univ., Yusung-ku, Taejon 305-764, Korea
Abstract:Surface treatment of isotropic pitch based carbon fibers by electrochemical oxidation was carried out, and the processes of electrochemical oxidation were investigated through Atomic Force Microscopy (AFM) and X ray Photoelectron Spectroscopy (XPS). The XPS studies indicated that the surface carbon and functional groups were progressively oxidized into carboxyl and carbon dioxide. The analyses of AFM images and surface roughness showed that the surface treatment first made carbon fiber smoother, and then caused striated surface after continual treatment. AFM illustrated the surface form on a microscopic scale effectively compared to SEM. Combining XPS with AFM can characterize the process of electrochemically oxidized pitch based carbon fiber.
Keywords:carbon fiber  electrochemical oxidation  AFM
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