Rheology–Morphology Relationships in Nylon–LCP Hybrid Composites
Rheological behaviors of hybrid composite systems consisting of liquid crystalline polymer (LCP), short glass ﬁbers and toughenednylon 66 were characterized with capillary rheometry. The results were compared with the rheological behavior of untoughened nylon/glass ﬁber/LCP hybrid composites to establish the role of elastomers and glass ﬁbers on LCP ﬁbrillation. Results showed that, compat-ibilization of nylon and LCP in the presence of MA-grafted elastomer and glass ﬁbers is the primary factor promoting LCP ﬁbrillation intoughened glass ﬁber ﬁlled hybrid composites. Glass ﬁbers serve as inert ﬁllers modifying the interfacial interaction between the tough-ened nylon 66 and LCP phases. Morphology of the rheometer extrudates observed with scanning electron microscopy was consistentwith the predictions from rheological results. The inﬂuence of rheology and morphology on the mechanical properties was also exam-ined. It was found that tensile strength of toughened hybrid composites improved with the addition of glass ﬁbers and on the other handthe strength of untoughened hybrid composites deteriorated with the glass ﬁber addition.
Composites Science and Technology
Pisharath, Sreekumar; Hu, Xiao; and Wong, Shing Chung Josh, "Rheology–Morphology Relationships in Nylon–LCP Hybrid Composites" (2006). Mechanical Engineering Faculty Research. 400.