Crystallization behaviors and mechanical properties of poly(ethylene 2,6‐naphthalate)/multiwall carbon nanotube nanocomposites |
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| Authors: | Jun Young Kim Sang‐Il Han Seong Hun Kim |
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| Affiliation: | 1. Department of Fiber and Polymer Engineering, Hanyang University, Seongdong‐gu, Seoul, 133‐791 Korea;2. Material Laboratory, Corporate R&D Center, Samsung SDI Co., Ltd., 575 Shin‐dong, Yeongtong‐gu, Suwon‐si, Gyeonggi‐do, 443‐731 Korea;3. Department of Fiber and Polymer Engineering, Hanyang University, Seongdong‐gu, Seoul, 133‐791 KoreaDepartment of Fiber and Polymer Engineering, Hanyang University, Seongdong‐gu, Seoul, 133‐791 Korea |
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| Abstract: | Carbon nanotube (CNT)‐reinforced poly(ethylene 2,6‐naphthalate) (PEN) nanocomposites were prepared by direct melt blending process in a twin‐screw extruder. There is significant dependence of the crystallization and melting behavior of PEN/CNT nanocomposites on CNT content and crystallization temperature. The incorporation of CNT may favor the formation of the β‐form crystals in PEN/CNT nanocomposites, and more CNT content amplified this effect. In this PEN/CNT nanocomposite system, the CNT promoted the nucleation and the growth with higher crystallization rate of PEN/CNT nanocomposites, and simultaneously reduced the fold surface free energy and the work required in folding polymer chains in the polymer nanocomposites. In addition, the incorporation of a very small quantity of CNT significantly improved the mechanical properties of PEN/CNT nanocomposites. POLYM. ENG. SCI., 47:1715–1723, 2007. © 2007 Society of Plastics Engineers |
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