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Effect of a Small Amount of Thermoplastic Starch Blend on the Mechanical Recycling of Conventional Plastics
Högskolan i Borås, Akademin för textil, teknik och ekonomi.ORCID-id: 0000-0002-7377-0765
Swedish Centre of Resource Recovery, University of Borås, 501 90, Borås, Sweden.
Rise Research Institutes of Sweden, Molndal, Sweden.
2021 (engelsk)Inngår i: Journal of Polymers and the Environment, ISSN 1566-2543, E-ISSN 1572-8919, Vol. 29, nr 3, s. 985-991Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The usage of bioplastics could increase in the future which may cause contamination of the waste streams of conventional plastics. The objective of this study was to investigate if a small amount of biopolymer contaminating conventional polymers would significantly affect mechanical and thermal properties. A starch-based plastic was first compounded by blending plasticised starch with PLA (polylactic acid). This polymer blend was subsequently compounded with HDPE (high density polyethylene), PP (polypropylene) or PET (polyethylene terephthalate) at 0%, 1% and 5% of the biopolymer. The compounds were characterised by tensile tests, Charpy impact tests, DSC (differential scanning calorimetry) and FESEM (field emission scanning electron microscopy). Tests showed that PE and PP were not significantly affected in terms of tensile strength and modulus but the elongation at break showed a strong reduction. PET was, on the other hand, incompatible with the starch-based plastic. Already at 1% contamination, PET had lost most of its impact strength.

sted, utgiver, år, opplag, sider
Springer, 2021. Vol. 29, nr 3, s. 985-991
Emneord [en]
Bioplastics, Contamination, Mechanical recycling
HSV kategori
Identifikatorer
URN: urn:nbn:se:hb:diva-24805DOI: 10.1007/s10924-020-01933-2ISI: 000582309900001Scopus ID: 2-s2.0-85093704112OAI: oai:DiVA.org:hb-24805DiVA, id: diva2:1521894
Tilgjengelig fra: 2021-01-25 Laget: 2021-01-25 Sist oppdatert: 2023-10-12bibliografisk kontrollert

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