Influence of stabilization additive on rheological, thermal and mechanical properties of recycled polypropylene

Mohor Mihelčič (Author), Alen Oseli (Author), Miroslav Huskić (Author), Lidija Slemenik Perše (Author)

Abstract

To decrease the amount of plastic waste, the use of recycling techniques become a necessity. However, numerous recycling cycles result in the mechanical, thermal, and chemical degradation of the polymer, which leads to an inefficient use of recycled polymers for the production of plastic products. In this study, the effects of recycling and the improvement of polymer performance with the incorporation of an additive into recycled polypropylene was studied by spectroscopic, rheological, optical, and mechanical characterization techniques. The results showed that after 20 recycling steps of mechanical processing of polypropylene, the main degradation processes of polypropylene are chain scission of polymer chains and oxidation, which can be improved by the addition of a stabilizing additive. It was shown that a small amount of an additive significantly improves the properties of the recycled polypropylene up to the 20th reprocessing cycle. The use of an additive improves the rheological properties of the recycled melt, surface properties, and time-dependent mechanical properties of solid polypropylene since it was shown that the additive acts as a hardener and additionally crosslinks the recycled polymer chains.

Keywords

recikliranje;polipropilen;stabilizacijski aditivi;reološke lastnosti;termične lastnosti;mehanske lastnosti;recycling;polypropylene;stabilization additive;rheological properties;thermal properties;mechanical properties;

Data

Language:	English
Year of publishing:	2022
Typology:	1.01 - Original Scientific Article
Organization:	UL FS - Faculty of Mechanical Engineering
UDC:	678:531/532.135
COBISS:	133580547
ISSN:	2073-4360
Views:	379
Downloads:	93
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	recikliranje;polipropilen;stabilizacijski aditivi;reološke lastnosti;termične lastnosti;mehanske lastnosti;
Type (COBISS):	Article
Pages:	str. 1-16
Volume:	ǂVol. ǂ14
Issue:	ǂiss. ǂ24
Chronology:	Dec. 2022
DOI:	10.3390/polym14245438
ID:	17399250