Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 66, Issue -, Pages 25-34Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2014.06.016
Keywords
Polymer-matrix composites (PMCs); Interface/interphase; Fiber/matrix bond; Single-fiber fragmentation test (SFFT)
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The interfacial adhesion between E-glass fibers and various types of nanomodified polypropylene (PP) matrices have been investigated on single-fiber model composites. In particular, an evaluation of the fiber-matrix interfacial shear strength was performed by the fragmentation tests on model composites prepared by using PP matrices containing various amounts (up to 7 wt%) of expanded graphite nanoplatelets (xGnP). The presence of xGnP in the polymer matrix resulted in a remarkable increase of the interfacial shear strength values (up to a factor of about 6 for a 7 wt% content of xGnP) if compared to neat PP. Moreover, wettability measurements in various liquids evidenced that the work of adhesion of the polymer matrix with respect to glass fiber, was improved by the presence of xGnP. (C) 2014 Elsevier Ltd. All rights reserved.
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