Effect of maleated EVA on compatibility and toughness of PETG/EVA blend |
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| Authors: | Hae Youn Park Sung Wook Hwang Hee Chang Ryu Sang Woo Kim Kwan Ho Seo |
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| Affiliation: | 1. Department of Polymer Science & Engineering, Kyungpook National University, Daegu, Korea;2. Korea Packaging Center, Korea Institute of Industrial Technology, Bucheon, Korea;3. LG Chem Research Park, LG Chem, Daejeon, Korea;4. Korean Intellectual Property Office, Daejeon, Korea |
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| Abstract: | Maleic anhydride (MAH) grafted onto ethylene vinyl acetate copolymer (EVA), mEVA (modified EVA) was blended with poly(ethylene glycol‐co‐cyclohexane‐1,4‐dimethanol terephthalate) (PETG) with various mEVA and EVA (unmodified) content in the internal mixer. The effect of reactive compatibilizer to decrease the dispersed particle diameter was observed. The brittle–ductile transition was found at about dn: 0.37 µm and dv: 0.55 µm of particle diameter, a critical particle diameter, regardless of EVA content, and the blend was also toughened at above the critical particle diameter regardless of dispersed EVA content and compatibility. The toughening mechanism and the effect of the particle diameter on the impact strength of the blend were investigated by morphological observation, and it was found that the toughening of the PETG/EVA blend system resulted from the shear deformation, induced by cavitation of dispersed EVA particles. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013 |
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| Keywords: | PETG EVA MAH blends brittle– ductile transition toughness |
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