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论文类型：期刊论文
发表时间：2008-12-30
发表刊物：APPLIED SURFACE SCIENCE
收录刊物：SCIE
卷号：255
期号：5
页面范围：3153-3158
ISSN号：0169-4332
关键字：PBO fibers; Oxygen plasma treatment; XPS; AFM; Surface wettability
摘要：The effects of oxygen plasma treatment power on surface properties of poly(p-phenylene benzobisoxazole) (PBO) fibers were investigated. Surface chemical composition, surface roughness and surface morphologies of PBO fibers were analyzed by X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM) and scanning electron microscopy (SEM), respectively. Surface free energy of the fibers was characterized by dynamic contact angle analysis (DCAA). The results indicated that the oxygen plasma treatment introduced some polar groups to PBO fiber surfaces, enhanced surface roughness and changed surface morphologies of PBO fibers by plasma etching and oxidative reactions. The polar groups and surface free energy of PBO fibers were significantly improved by the oxygen plasma treatment when the plasma treatment power was lower than 200 W. However, these two parameters degraded as the plasma treatment power went up to 300 and 400 W. PBO fibers were notably roughened by the oxygen plasma treatment. Surface morphologies of the fibers became more complicated, and surface roughness of the fibers enhanced almost linearly with the plasma treatment power increasing. (C) 2008 Elsevier B.V. All rights reserved.