The impact of thermomechanical pulp fiber modifications on thermoplastic lignin composites

Lahtinen, Maarit; Ojala, Antti; Wikström, Lisa; Nättinen, Kalle; Hietala, Sami; Fiskari, Juha; Kilpeläinen, Ilkka

doi:10.1016/j.jcomc.2021.100170

Cited by 1 publication

(1 citation statement)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The compatibility between cellulose and other hydrophobic biopolymers could be greatly enhanced by lignin with its polar phenolic hydroxy groups and non-polar hydrocarbon groups [ 24 ]. The addition of lignin could improve the compatibility between cellulose and matrix [ 25 , 26 ]. In [ 24 ], it is described that impact strength decreased after the addition of lignin, while Young’s modulus and tensile strength improved significantly.…”

Section: Introductionmentioning

confidence: 99%

Flax Fibre Yarn Coated with Lignin from Renewable Sources for Composites

et al. 2022

View full text Add to dashboard Cite

The present experimental work analyses the potential of lignin as a matrix for materials made from renewable resources for composite components and the production of hybrid semi-finished products by coating a flax fibre yarn. Natural fibres, due to their low density, in combination with lignin can be a new renewable source for lightweight products. For this purpose, the extrusion process was adapted to lignin as a matrix material for bio-based composites and coating of natural fibre yarns. A commercial flax yarn is the basis for the lignin coating by extrusion. Subsequently, the coated flax yarn was characterised with regard to selected yarn properties. In order to produce composite plates, the lignin-coated flax yarn was used as warp yarn in a bidirectional fabric due to its insufficient flexibility transversely to the yarn axis. The commercial flax yarn was used as weft yarn to increase the fibre volume content. The tensile and flexural properties of the bio-based composite material were determined. There was a significant difference in the mechanical properties between the warp and weft directions. The results show that lignin can be used as matrix material for bio-based natural fibre composites and the coating of natural fibre yarns is an alternative to spun hybrid yarns.

show abstract