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AFM imaging of interfacial morphologies in carbon-fiber reinforced isotactic polypropylene

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Abstract

The morphology of high-modulus carbon-fiber (HM-CF) reinforced isotactic polypropylene (iPP) was investigated for the first time by atomic force microscopy (AFM) using chemically etched specimens. The images exhibited α-transcrystalline morphology for samples crystallized from quiescent melts, nucleated by HM-CF. In melts sheared by fiber pulling, αβ-cylindritic columnar morphology was observed in agreement with earlier thermo-optical studies. AFM images in the interfacial region of the β-cylindrites unveiled fine morphological details of α-row nuclei. Based on the observations, we concluded that in β-cylindrites, the lamellar growth in α-row nuclei occurs during epitaxial crystallization on bundles of extended iPP chains which form during shearing of the polymer matrix by fiber pull.

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Vancso, G.J., Liu, G., Karger-Kocsis, J. et al. AFM imaging of interfacial morphologies in carbon-fiber reinforced isotactic polypropylene. Colloid Polym Sci 275, 181–186 (1997). https://doi.org/10.1007/s003960050069

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  • DOI: https://doi.org/10.1007/s003960050069

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