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The compatibilizing effect of maleic anhydride in ethylene-vinyl acetate (EVA)/ethylene-α-olefin copolymers blends

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Abstract

The compatibilizing effect of maleic anhydride (MA) in the immiscible blends of EVA22 (vinyl acetate content 22%)/ethylene-α-olefin copolymers with 1-butene (EtBC) and 1-octene (EtOC)) comonomers was studied. By adding 1, 2, and 3 phr of MA in the presence of dicumylperoxide, the morphology, tensile strength at break, and 100 and 300 % modulus of EVA22/EtBC and EVA22/EtOC blends were significantly enhanced. The melting point and crystallization point depression were observed upon the addition of MA. The changes in the β transition and glass transition temperature of ethylene-α-olefin copolymers and ethylene-vinyl acetate copolymers, respectively, indicate that MA plays a role of compatibilizer for these immiscible blends. The TGA thermograms, measured from the blends with MA, show that thermal stability is slightly enhanced with MA, indicating that MA acts as a reinforcing agent either by grafting or crosslinking with other copolymers.

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Authors and Affiliations

  1. Department of Chemical Engineering, Inha University, 402-751, Incheon, Korea

    Soochul Park & Soonja Choe

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  1. Soochul Park
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  2. Soonja Choe
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Correspondence to Soonja Choe.

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Park, S., Choe, S. The compatibilizing effect of maleic anhydride in ethylene-vinyl acetate (EVA)/ethylene-α-olefin copolymers blends. Macromol. Res. 13, 297–305 (2005). https://doi.org/10.1007/BF03218457

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  • DOI: https://doi.org/10.1007/BF03218457

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