20.500.12556/DKUM-82068 Long-term creep compliance of wood polymer composites: using untreated wood fibers as a filler in recycled and neat polypropylene matrix Neat (NPP) and recycled (RPP) polypropylene matrix materials were used to prepare wood–polymer composites with untreated wood fibers up to 40 wt.%. Long-term creep properties obtained through the time-temperature superposition showed superior creep resistance of composites with NPP matrix. In part, this is attributed to their higher crystallinity and better interfacial adhesion caused by the formation of a transcrystalline layer. This difference resulted in up to 25% creep compliance reduction of composites with NPP matrix compared to composites with recycled (RPP) polypropylene matrix, which does not form a transcrystalline layer between the fibers and polymer matrix. Despite the overall inferior creep performance of composites with RPP matrix, from the 20 wt.% on, the creep compliance is comparable and even surpasses the creep performance of unfilled NPP matrix and can be a promising way to promote sustainability. lesno-polimerni kompoziti lezenje vzdržljivost les recikliranje wood–polymer composites creep durability wood recycling lesno-polimerni kompoziti lezenje vzdržljivost les recikliranje true false true MDPI AG Angleški jezik Slovenski jezik https://www.mdpi.com/journal/polymers © 2022 by the authors Znanstveno delo 2022-07-08 07:29:45 2023-08-16 15:52:26 2025-03-26 08:51:51 0000-00-00 00:00:00 2022 0 0 19 str. iss. 13 (2539) Vol. 14 June 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2022-06-09 2022-06-17 2022-06-22 677.017:631.571 113069315 10.3390/polym14132539 2073-4360 Long-Term_Creep_Compliance_of_Wood_Po-Bek-2022.pdf Long-Term_Creep_Compliance_of_Wood_Po-Bek-2022.pdf 1 9EE3919B90A92F32162964EB8DA528D1 b0b21ee85d421ae164373f993a6707eacb4faedf55aad1f4fdffc05fa13da5c8 e4310191-3c3b-11ee-b5e9-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=169596 https://www.mdpi.com/2073-4360/14/13/2539 0 fa37e226-fe7e-11ec-83e8-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=159249 Fakulteta za strojništvo 0 0 0