Abstract
Fully renewable thermoplastic lignin composites were
fabricated. Wood fibre reinforced soft-wood kraft lignin,
plasticised with starch acetate (Ac-starch) and triethyl
citrate (TEC), was processed in pilot scale using
twin-screw extrusion and injection moulding techniques.
Thermomechanical pulp (TMP) and bleached pulp (BP) were
used as the reinforcements. Thermal properties of the
materials were analysed with TGA and DSC methods and the
produced tensile test specimens were mechanically tested.
Based on the thermal analysis of the melt mixture of
lignin, Ac-starch and TEC, the components are
thermodynamically fully compatible and form a single
phase upon melt mixing. Fibre reinforcements were
observed to significantly improve the mechanical
properties of the composites. Further, the performance of
the BP reinforced composites was better than the one with
TMP fibres. The developed fully bio-based thermoplastic
lignin composites demonstrate comparable tensile
properties with typical wood plastic composites (WPCs)
i.e. wood fibre reinforced polylpropylene (PP) and
polylactic acid (PLA)
| Original language | English |
|---|---|
| Title of host publication | Proceedings for the 17th international symposium on wood, fibre and pulping chemistry |
| Publisher | Pulp and Paper Technical Association of Canada (PAPTAC) |
| Publication status | Published - 2013 |
| MoE publication type | B3 Non-refereed article in conference proceedings |
| Event | 17th International Symposium on Wood, Fibre and Pulping Chemistry, ISWFPC 2013 - Vancouver, Canada Duration: 12 Jun 2013 → 14 Jun 2013 |
Conference
| Conference | 17th International Symposium on Wood, Fibre and Pulping Chemistry, ISWFPC 2013 |
|---|---|
| Abbreviated title | ISWFPC 2013 |
| Country/Territory | Canada |
| City | Vancouver |
| Period | 12/06/13 → 14/06/13 |
Keywords
- Thermoplastic lignin
- thermomechanical pulp
- bleached pulp
- starch acetate
- composite