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المؤلفMofokeng, J. P.
المؤلفLuyt, A. S.
تاريخ الإتاحة2015-11-05T09:24:33Z
تاريخ النشر2015
اسم المنشورApplied Polymer Science
المصدرWiley Online library
الاقتباسMofokeng, J. P. and Luyt, A. S. (2015), Morphology and thermal degradation studies of melt-mixed PLA/PHBV biodegradable polymer blend nanocomposites with TiO2 as filler. J. Appl. Polym. Sci., 132, 42138
الرقم المعياري الدولي للكتاب1097-4628
معرّف المصادر الموحدhttp://dx.doi.org/10.1002/app.42138
معرّف المصادر الموحدhttp://hdl.handle.net/10576/3678
الملخصThe morphology and thermal stability of melt-mixed poly(lactic acid) (PLA)/poly(hydroxybutyrate-co-valerate) (PHBV) blends and nanocomposites with small amounts of TiO2 nanoparticles were investigated. PLA/PHBV at 50/50 w/w formed a co-continuous structure, and most of the TiO2 nanoparticles were well dispersed in the PLA phase and on the interface between PLA and PHBV, with a small number of large agglomerates in the PHBV phase. Thermogravimetric analysis (TGA) and TGA–Fourier-transform infrared spectroscopy was used to study the thermal stability and degradation behavior of the two polymers, their blends, and nanocomposites. The thermal stability of PHBV was improved through blending with PLA, whereas that of the PLA was reduced through blending with PHBV, and the presence of TiO2 nanoparticles seemingly improved the thermal stability of both polymers in the blend. However, the degradation kinetics results revealed that the nanoparticles could catalyze the degradation process and/or retard the volatilization of the degradation products, depending on their localization and their interaction with the polymer in question.
راعي المشروعSouth African National Research Foundation (NRF)
اللغةen
الناشرWiley Periodicals, Inc.
الموضوعbiodegradable
blends
composites
degradation
kinetics
العنوانMorphology and thermal degradation studies of melt-mixed PLA/PHBV biodegradable polymer blend nanocomposites with TiO2 as filler
النوعArticle
رقم العدد25
رقم المجلد132


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