Naslov
Compatibilization of PP/TPU blends with different fillers

Autori
Govorčin Bajsić, Emi ; Rek, Vesna ; Pleić, Ivana ; Leskovac, Mirela

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
10th European Symposium on Polymer Blends, Book of abstracts / Leibniz-Institut fur Polymerforschung Dresden e.V., Technische Universitat Dresden - Dresden : Leibniz-Institut fur Polymerforschung Dresden e.V, 2010

Skup
10th European Symposium on Polymer Blends

Mjesto i datum
Dresden, Njemačka, 07.03.2010. - 10.03.2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
blends; polypropylene; polyurethane; talc; nanosilica; clay; thermal properties;

Sažetak
In this work, the compatibilising effect of talc, clay and nanosilica on the thermal and mechanical properties of thermoplastic polyurethane (TPU) and polypropylene (PP) was investigated. Pure TPU, PP, TPU/PP blends and filled TPU/PP blends (TPU/PP/F) were prepared via a a melt blending in a twin - screw extruder (Rondol, 21 mm LAB TWIN) and then injection-molded into speciments with an injection -molding mashine (Rondol, High Force 5). Properties of the blends were investigated using different scanning calorimetry (DSC), dynamic mechanical analysis (DMA) and tensile testing. DSC and DMA analysis showed that the glass transition temperature (Tg) of TPU/PP and TPU/PP/F blends change and to be affected mainly by the type of filler and content of TPU and PP components. The shift of Tg gave the evidence that the TPU and PP were miscible to some extent. DSC results indicated that talc acted as effective nucleating agent and incresing the degree of crystallinity of TPU/PP blends. The addition of nanosilica in TPU decreased the Tg in TPU as effect of interactions between the ester carbonyl groups in the TPU and silanol groups on the silica surface which formed the degree of phase separation between the hard (isocyanate + chain extender) and soft (polyol) segments in the TPU. The effects of fillers on mechanical properties of TPU/PP blends were investigated. It was shown that in the presence of all used fillers in the blends the tensile strenght increases.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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