Poly(ethylene terephthalate)/poly(ethylene glycol‐co‐1,3/1,4‐cyclohexanedimethanol terephthalate)/clay nanocomposites: Effects of biaxial stretching |
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| Authors: | Jyh‐Horng Wu Ming‐Shien Yen M. C. Kuo Yuhsin Tsai Ming‐Tsong Leu |
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| Affiliation: | 1. Green Energy & Eco‐Technology Center, Industrial Technology Research Institute, Tainan, Taiwan;2. Department of Materials Engineering, Kun Shan University, Tainan, Taiwan;3. School of Chinese Medicine, China Medical University, Taichung, Taiwan |
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| Abstract: | In this study, we fabricated poly(ethylene terephthalate) (PET)/clay, PET/poly(ethylene glycol‐co‐1,3/1,4‐cyclohexanedimethanol terephthalate) (PETG), and PET/PETG/clay nanocomposite plates and biaxially stretched them into films by using a biaxial film stretching machine. The tensile properties, cold crystallization behavior, optical properties, and gas and water vapor barrier properties of the resulting films were estimated. The biaxial stretching process improved the dispersion of clay platelets in both the PETG and PET/PETG matrices, increased the aspect ratio of the platelets, and made the platelets more oriented. Thus, the tensile, optical, and gas‐barrier properties of the composite films were greatly enhanced. Moreover, strain‐induced crystallization occurred in the PET/PETG blend and in the amorphous PETG matrix. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 42207. |
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| Keywords: | blends clay composites polyesters |
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