The role of various modifiers in the compatibilisation of PP/PET blends - rheological and structural properties

N. Zdrazilova; B. Hausnerova; T. Kitano; P. Saha

Published : 2022-09-01

Vol. 49 No. 11-12 (2004)

The role of various modifiers in the compatibilisation of PP/PET blends - rheological and structural properties

N. Zdrazilova B. Hausnerova T. Kitano P. Saha

Abstract

The present paper deals with structural and flow properties of polypropylene (PP) and poly(ethylene terephthalate) (PET) blends compatibilized by maleic anhydride (MA) in combination with two modifiers - epoxidized thermoplastic elastomer and silicone/acrylic-based rubber. Rheological experiments were performed at both steady and dynamic (oscillating) shear regimes at temperature 245 °C and 265 °C, i.e. below (when PET particles are not completely molten acting as soft filler) and above melting temperature of PET. Increased rheological functions are generally observed for PP/PET/MA (due to enhanced interfacial interactions), which is further improved by elastomeric modifiers. These also bring satisfactory phase structure resulting from possible reactions between functional groups of the modifier and blend components, particularly for epoxy-modified thermoplastic elastomer. From the application viewpoint, the addition of elastomeric modifiers leads to a significant increase in viscosity of PP/PET blends, which can be useful in their processing, for example in extrusion of mixed plastics wastes.

Keywords

polipropylen ; poli(tereftalan etylenu) ; mieszaniny elastomeryczne ; kompatybilizatory ; właściwości reologiczne ; struktura polypropylene ; poly(ethylene terephthalate) ; blends ; elastomeric compatibilizer ; rheological properties ; structure

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Zdrazilova, N., Hausnerova, B., Kitano, T., & Saha, P. (2022). The role of various modifiers in the compatibilisation of PP/PET blends - rheological and structural properties. Polimery, 49(11-12), 819–827. Retrieved from https://polimery.ichp.vot.pl/index.php/p/article/view/1818

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N. Zdrazilova polimery@ichp.pl

Affiliation
Tomas Bata University in Zlin, Faculty of Technology, Polymer Centre, TGM 275, 762 72 Zlin, Czech Republic

B. Hausnerova

Affiliation
Tomas Bata University in Zlin, Faculty of Technology, Polymer Centre, TGM 275, 762 72 Zlin, Czech Republic

T. Kitano

Affiliation
National Institute of Advanced Industrial Science and Technology Tsukuba, 305-85-65 Ibaraki Japan

P. Saha

Affiliation
Tomas Bata University in Zlin, Faculty of Technology, Polymer Centre, TGM 275, 762 72 Zlin, Czech Republic