Effect of Organoclay Platelets on Crystallization of Polytrimethylene Terephthalate/Polyethylene-octene-g-maleic Anhydride Blends: Isothermal Crystallization |
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| Authors: | Kunyan Wang Shugang Li Peisong Tang Feng Cao |
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| Institution: | 1. School of Life Science, Huzhou Teachers College , Huzhou , P. R. China;2. School of Chemistry and Chemical Engineering , Shanghai Jiaotong University , Shanghai , P. R. China |
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| Abstract: | The blends of poly(trimethylene terephthalate) (PTT) with maleic anhydride-grafted poly(ethylene-octene) (POE-g-MA) and organoclay (OMMT) were prepared by melt-blending. The effects of organoclay platelets on the isothermal crystallization behaviors of PTT/POE-g-MA blend were examined using differential scanning calorimetry. The crystallization kinetics of the primary stage under isothermal conditions could be described by the Avrami equation, with values of the Avrami exponent between 2.01 and 2.81 for all samples. The crystallization rate parameter, K, decreased with increase of melt-crystallization temperature for all samples. The activation energies for isothermal crystallization were determined by the Arrhenius equation. |
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| Keywords: | crystallization kinetics isothermal crystallization maleic anhydride-grafted poly(ethylene-octene) (POE-g-MA) poly(trimethylene terephthalate) (PTT) |
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