Abstract
In this study, the maleic anhydride grafted styrene-ethylene-butylene-styrene block copolymer (SEBS-g-MA) is used as the compatilizer for polylactic acid (PLA)/carbon fiber (CF) composites. The effects of SEBS-g-MA on the mechanical properties, thermal behavior, interfacial compatibility, and electrical characteristics of composites are then evaluated. The mechanical property tests indicate that when the amount of compatilizer increases, the tensile properties and flexural property of the composites decrease while their impact strength increases. The SEM results show that the compatilizer can decrease the interstices between PLA and CF, and thereby augments their interfacial compatibility. The differential scanning calorimetry (DSC) results confirm that the compatilizer results in a greater crystallization temperature and a greater crystallinity of the composites. The electrical characteristic results indicate that neither PLA nor SEBS-g-MA is not interfered with the conductive network that is constructed by CF, which is exemplified by an average electromagnetic shielding effect of above −30 dB. This study confirms that SEBS-g-MA can improve interfacial compatibility and toughness, as well as attain good electrical characteristics of PLA/CF composites.
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Hsieh, CT., Pan, YJ., Lou, CW. et al. Polylactic acid/carbon fiber composites: Effects of functionalized elastomers on mechanical properties, thermal behavior, surface compatibility, and electrical characteristics. Fibers Polym 17, 615–623 (2016). https://doi.org/10.1007/s12221-016-5922-0
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DOI: https://doi.org/10.1007/s12221-016-5922-0