Polypropylene/Poly(trimethylene terephthalate) Blend Nanocomposite: A Thermal Properties Study

Author： Jafari Seyed Hassan  

Publisher： Taylor & Francis Ltd

ISSN： 0360-2559

Source： Polymer-Plastics Technology and Engineering, Vol.51, Iss.7, 2012-04, pp. : 682-688

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Abstract

In this article, thermal properties of polypropylene/poly(trimethylene terephthalate) melt-mixed blends containing organically modified montmorillonite nanoclays and interacting compatibilizers are studied. Dynamic mechanical analysis showed an enhanced elastic modulus and reduced damping upon nanoclay fillers incorporation, also α-relaxation peak was shifted up while β-relaxation was not affected. Thermogravimetry exhibited a synergistic effect in thermal stability of the blend accompanied by a reduction in decomposition rate. This effect was more pronounced in presence of compatibilizers. The addition of nanoclay fillers generally led to an enhancement of thermal resistance; however, a dual function was evident, namely preventive and catalytic, respectively prior to and after onset of degradation.

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