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Vol. 27 No. 5 (2015): Vol 27 Issue 5

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Rheology, Mechanical Properties and Non-Isothermal Crystallization Kinetics of Poly(trimethylene terephthalate)/Thermoplastic Polyester Elastomer Blends

https://doi.org/10.14233/ajchem.2015.17475
Yingbin Liu
College of Chemistry & Environmental Science, Hebei University, Baoding 071002, P.R. China
Changying Song
College of Chemistry & Environmental Science, Hebei University, Baoding 071002, P.R. China
Jian Wang
College of Chemistry & Environmental Science, Hebei University, Baoding 071002, P.R. China
Yuqing Bai
College of Chemistry & Environmental Science, Hebei University, Baoding 071002, P.R. China
Mingtao Run
College of Chemistry & Environmental Science, Hebei University, Baoding 071002, P.R. China

Corresponding Author(s) : Mingtao Run

lhbx@hbu.cn

Asian Journal of Chemistry, Vol. 27 No. 5 (2015): Vol 27 Issue 5

Abstract

In order to toughen poly(trimethylene terephthalate) (PTT) material, thermoplastic polyester elastomer (TPEE) was blended with PTT for preparing polymer blends and their rheology behaviors, phase morphology, impact strength dependence on molding temperatures, melting and non-isothermal crystallization kinetics were investigated by capillary rheometer, impact tester, scanning electron microscopy, wide angle X-ray diffraction and differential scanning calorimetry, respectively. The results suggest that the blends' apparent viscosities and the pseudoplasticity increase with increasing TPEE contents and TPEE has a good effect on improving the blends' melt viscosity. Thermoplastic polyester elastomer, which is partially miscible with PTT, also has a good toughening effect on PTT for the toughness increases with increasing TPEE content. However, the toughness decreases with molding temperatures increasing from 25 to 75 °C. The blends crystallize at lower rate and lower dimension than those of PTT. With increasing flexible TPEE, the blends show less crystallization ability for their more positive crystallization effective activation energy.

Keywords

Poly(trimethylene terephthalate) Thermoplastic polyester elastomer Crystallization Toughening Miscibility
Liu, Y., Song, C., Wang, J., Bai, Y., & Run, M. (2015). Rheology, Mechanical Properties and Non-Isothermal Crystallization Kinetics of Poly(trimethylene terephthalate)/Thermoplastic Polyester Elastomer Blends. Asian Journal of Chemistry, 27(5), 1683–1691. https://doi.org/10.14233/ajchem.2015.17475
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