Interfacial Structure Analyses of Single Carbon Fiber-Embedded Polymers by In Situ X‑ray Scattering and Birefringence Measurements

Single carbon fiber (CF)-embedded thermoset epoxy resin (EP) and thermoplastic polycarbonate (PC) specimens were prepared to clarify the interfacial interaction between CF and a matrix polymer and the deformation behavior of the carbon fiber and a matrix polymer. Stress–strain curves of EP and PC sa...

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Published inACS applied polymer materials Vol. 6; no. 1; pp. 298 - 307
Main Authors Todaka, Masatoshi, Obayashi, Kakeru, Kawatoko, Ryosuke, Kojio, Ken
Format Journal Article
LanguageEnglish
Published American Chemical Society 12.01.2024
Subjects
birefringence
carbon fiber
epoxy resin
small/wide-angle X-ray scattering
polycarbonate
interfacial properties
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Summary:Single carbon fiber (CF)-embedded thermoset epoxy resin (EP) and thermoplastic polycarbonate (PC) specimens were prepared to clarify the interfacial interaction between CF and a matrix polymer and the deformation behavior of the carbon fiber and a matrix polymer. Stress–strain curves of EP and PC samples including and excluding CFs showed yields at approximately 70 MPa. In situ polarized high-speed camera images of the samples revealed the effect of CF on stress propagation. Moreover, the retardation of the fiber/polymer interface was large and that of PC was higher than that of EP. Microbeam small/wide-angle X-ray scattering measurements revealed that the orientation of the polymer chains near the CF and the turbostratic structure of the CFs occurred for both EP and PC; craze formation was suppressed because of CF during the deformation process for PC.
ISSN:2637-6105
2637-6105
DOI:10.1021/acsapm.3c01959