Roles of acidic functional groups of carbon fiber surfaces in enhancing interfacial adhesion behavior
Roles of acidic functional groups of carbon fiber surfaces in enhancing interfacial adhesion behavior
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DOI：
10.1016/j.msea.2005.08.129
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发表时间：
2005-11-05
期刊：
影响因子：
6.4
通讯作者：
Kim, BJ
中科院分区：
文献类型：
--
作者：
Park, SJ;Kim, BJ
采用气相臭氧处理的方法在碳纤维表面键合酸性含氧官能团。臭氧对碳纤维的处理随臭氧浓度和处理时间的不同而不同。采用红外光谱、X射线光电子能谱(XPS)和动态接触角测试等手段对处理前后的碳纤维进行了表面分析。用临界应力强度因子(K-IC)和临界能量释放率(G(IC))研究了纤维/聚合物复合材料的界面力学性能。红外光谱和X射线光电子能谱分析表明，臭氧处理后的碳纤维表面附着了-OH、O-C=O、C=O和C-O等含氧官能团。复合材料的界面力学性能也高于未处理的复合材料。臭氧处理是由于复合材料中酸性官能团的增加和纤维与聚合物树脂界面粘附度的增加。(C)2005 Elsevier B.V.保留所有权利。
The gas phase ozone treatment was used as a method to bind acidic oxygen functional groups on carbon fiber surfaces. The ozone treatment on carbon fibers was varied with the ozone concentration and treatment time. Surface analyses of the carbon fibers before and after treatments were performed by Fr-IR, X-ray photoelectron spectrometer (XPS), and dynamic contact angle measurements. Mechanical interfacial properties of the fibers/polymer composites were investigated by using critical stress intensity factor (K-IC) and critical energy release rate (G(IC)) measurements. From the results of Fr-IR and XPS, it was observed that the oxygen functional groups, such as -OH, O-C=O, C=O, and C-O, were attached on the carbon fiber surfaces after the ozone treatment. The mechanical interfacial properties of the composites also showed higher values than those of untreated composites. Ozone treatment is attributed to the increase of both the acidic functional groups and the degree of adhesion at interfaces between the fibers and polymeric resin in composites. (c) 2005 Elsevier B.V. All rights reserved.