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Abstract

A one-polymer composite made by PE/UHMPE fibers was previously studied; its thermal properties and the transcrystallization of the matrix over the fibers was observed. In this present study, the influence of surface treatment of the fibers of a one-polymer composite made of PE reinforced with UHMPE fibers, on the properties of the composites was studied. The fibers were first used with their initial sizing; then, they were used after either etching in chromic acid or plasma treatment of their surface. Stress–strain behavior in longitudinal and in transverse directions of the unidirectional composite and pull-out tests were performed. The crystallization of the matrix on the fiber surface was followed by microscopy and by DSC analysis. The structure of the interface was then observed by wide angle X-ray diffraction. Rheological experiments were conducted on the matrix and on the composites to evaluate the influence of the interface on dynamical properties at low frequencies.

Keywords

polyethylene composites UHMPE fibers transcrystallinity surface treatments mechanical properties

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Effect of Surface Treatment on Mechanical Properties of Polyethylene Composite

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