THERMAL AND SPECTRAL CHARACTERIZATION OF PP-TPE BLENDS
Lucica-Grigora Toma, Radu Setnescu, Tanta Setnescu, Ion V. Popescu, Virgil Marinescu, Rodica-Mariana Ion
Pagini: 266-277
Publicat: 1 Jan 2011
Vizualizări: 86
Rezumat: This paper presents the results of thermal analysis and spectral characterization of some polypropylene (PP) - thermoplastic elastomer (styrene-ethylene/propylene-styrene block copolymer) (TPE) blends. The thermal stabilities of different PP-TPE blends containing 0 - 20 % of TPE were assessed by isothermal differential scanning calorimetry (DSC). It was observed that particles reduced the degradation rate of the resulted material. Both the oxidation induction time (OIT) and the time to oxidation peak (tm) values from isothermal measurements increase as increasing the TPE concentration. Similar conclusions were obtained from non-isothermal data. As the observed antioxidative effect is higher than that corresponding to the proportion of TPE, a synergistic behavior was concluded. The thermal effect of oxidation and melting peaks indicates that the blends are homogeneous in the investigated concentration range. The attenuated total reflectance – Fourier transform infrared spectroscopy (ATR-FTIR) data are in agreement with those of thermal analysis. Some aspects about the optimum concentration of TPE on PP, were also evaluated from the experimental data.
Cuvinte cheie: pp - tpe blends, thermal analysis, spectral characterization, isothermal dsc, atr-ftir
Citează acest articol: Lucica-Grigora Toma, Radu Setnescu, Tanta Setnescu, Ion V. Popescu, Virgil Marinescu, Rodica-Mariana Ion. THERMAL AND SPECTRAL CHARACTERIZATION OF PP-TPE BLENDS. Journal of International Scientific Publications: Materials, Methods & Technologies 5, 266-277 (2011). https://www.scientific-publications.net/en/article/1003305/
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