XPS,AFM研究沥青基碳纤维电化学表面处理过程的机制

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名

邮箱

手机号码

标题

留言内容

验证码

基金项目: 中韩政府间合作项目(1996~2000)

STUDY ON THE MECHANISM OF ELECTROCHEMICAL OXIDIZED PITCH-BASED CARBON FIBER BY XPS AND AFM

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

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。
- 碳纤维 /
- 电化学氧化 /
- AFM
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.
- carbon fiber /
- electrochemical oxidation /
- AFM