Long-Term Creep Compliance of Wood Polymer Composites: Using Untreated Wood Fibers as a Filler in Recycled and Neat Polypropylene Matrix
Journal article, 2022

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.

creep

recycling

wood

durability

wood–polymer composites

Author

Marko Bek

University of Ljubljana

Alexandra Aulova

Chalmers, Industrial and Materials Science, Engineering Materials

Klementina Pusnik Cresnar

University of Maribor

Sebastjan Matkovič

University of Ljubljana

Mitjan Kalin

University of Ljubljana

Lidija Slemenik Perše

University of Ljubljana

Polymers

2073-4360 (eISSN)

Vol. 14 13 2539

Subject Categories

Polymer Chemistry

Polymer Technologies

Composite Science and Engineering

DOI

10.3390/polym14132539

PubMed

35808584

More information

Latest update

7/15/2022