Article ID Journal Published Year Pages File Type
9795782 Materials Science and Engineering: A 2005 5 Pages PDF
Abstract
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 FT-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 (KIC) and critical energy release rate (GIC) measurements. From the results of FT-IR and XPS, it was observed that the oxygen functional groups, such as OH, OCO, CO, and CO, 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.
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Physical Sciences and Engineering Materials Science Materials Science (General)
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