Zong RW, Hu Y, Liu N, Wang SF, Liao GX (2005) Evaluation of the thermal degradation of PC/ABS/montmorillonite nanocomposites. Polymers for Advanced Technologies 16(10), 725-731. [In English]

Web link:http://dx.doi.org/10.1002/pat.651

Keywords:

nanocomposites, thermogravimetric analysis (TGA), kinetics (polym.), model-free method, non-linear regression method, abs/montmorillonite nanocomposite, clay nanocomposites, flammability, stability,

Abstract: Polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) polymer alloy/montmorillonite (MMT) nanocomposites were prepared using a direct melt intercalation technique. The pyrolytic degradation and the thermo-oxidative degradation of the polymer alloy and the nanocomposites were studied by thermogravimetric analysis (TGA). The kinetic evaluations were performed by the model-free kinetic analysis and the multivariate non-linear regression. Apparent kinetic parameters for the overall degradation were calculated. The results show that PC/ABS/MMT nanocomposites have high thermal stability and low flammability. Their pyrolytic degradation and the thermo-oxidative degradation model are different. The pyrolytic degradation reaction of the polymer is a two-step parallel reaction model: nth-order reaction model, and ath-degree autocatalytic reaction with an nth-order reaction autocatalytic reaction, whereas the thermal oxidative degradation reaction of the polymer is a two-step following reaction model: A ->, B ->, C of nth-order reaction model, and autocatalytic reaction model. Copyright (c) 2005 John Wiley &, Sons, Ltd.