PMSE 267 |
| Abstract: Cold air plasma treatment process is known as an effective way to enhance the interlaminar shear strength of carbon fiber/PPESK composites. In order to probe the mechanism of interfacial adhesion between fibers and matrix, we have taken both of chemical and physical analysis. X-ray photoelectron spectroscopy (XPS) was used to examine the fiber surface composition and surface functional groups at different plasma treatment time. Atomic force microscopy (AFM) was used to observe the surface morphology and roughness. The results show that the fiber has an increased surface roughness and a large amount of functional groups with the plasma treatment time changing. Interfacial adhesion can be improved by mechanical interlocking by increasing the fiber surface roughness and by changing the surface free energy by introducing polar groups onto the fiber surface. key words: carbon fiber; PPESK; XPS; AFM; plasma treatment |
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Joint PMSE/POLY Poster Session
6:00 PM-8:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster
Division of Polymeric Materials: Science & Engineering |