20.500.12556/DKUM-88356 Comparative study of hydrothermal decomposition of virgin and recycled polypropylene Plastics are widely used due to their versatile properties and numerous applications. However, the proper management of plastic waste is a major challenge, even though it is recyclable. The process of repeated recycling can cause the quality of the material to decrease as unwanted contaminants and pollutants increase. This can affect the chemical recycling of plastics at the end of their life and the recovery of secondary products that can be used in other applications. In this study, the chemical degradation of virgin polypropylene (vPP) and recycled polypropylene (rPP) was investigated in supercritical water at a temperature of 450 °C and a reaction time of 15 to 240 min. The oil phase was the primary decomposition product and was obtained in high yield, which reached a maximum after 30 min of reaction time and was 96.9 % for vPP and 94.5 % for rPP. The results of our study show that there are some differences in the product composition depending on which material (vPP or rPP) is chemically recycled. virgin polypropylene plastics chemical degradation chemical recycled polipropilen plastika kemijska degradacija kemično recikliranje true false true AIDIC Angleški jezik Slovenski jezik https://www.cetjournal.it/index.php/cet/ Članek v reviji 2024-04-18 11:23:21 2024-04-18 11:23:23 2024-04-19 03:16:42 0000-00-00 00:00:00 2023 0 0 str. 727-732 Vol. 103 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2023-04-15 2023-08-22 2023-10-15 66.02 170128387 10.3303/CET23103122 2283-9216 122.pdf 122.pdf 1 35F66AED189D5492F84E7679C59DB792 ee743825c995c8a8d762da6b41de070abdbf00475e3f6342908650765a348bc7 d1c4ac9f-fd65-11ee-bd4d-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=178699 https://www.cetjournal.it/index.php/cet/article/view/CET23103122 0 daf6b03a-fd65-11ee-bd4d-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=178700 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0