Banner for LabNotes
From Lab Notes
Contact Information
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592


You are here: FPL Home  / Information Products & Services  / Publications

Requested Product

Title: Thermal Properties of Extracted and Delignified Wood Flour for use in Wood-Plastic Composites

Source: In: Conference Proceedings, The Advancements in Fiber-Polymer Composites: Wood Fiber, Natural Fibers and Nanocellulose, May 6-7, 2013 Milwaukee, Wisconsin. 10 p.

Author(s)Chen, Yao; Tshabalala, Mandla A.; Stark, Nicole M.; Gao, Jianmin; Fan, Yongming; Ibach, Rebecca E.

Publication Year: 2013  View PDF »

Category: Conference Proceedings
Associated Research Project(s):   FPL-4706-1B  FPL-4707-2B

Abstract: To investigate the effect of extractives and lignin on the thermal stability of wood flour (WF), the thermal degradation behavior of extracted and delignified mixed pine WF was determined using thermogravimetric analysis (TGA). Lignin contribution to the thermal stability was greater than the extractives. The removal of extractives from WF resulted in improved thermal stability through the shift of onset temperature,T0, to a higher temperature. Polar solvents contributed more to T0 than the less polar ones. However, solvent extraction had less effect on T2 and the char residues compared to delignification. The decomposition temperature of delignified WF decreased compared to the control. Shoulder peak (T1) was only observed in delignified WF and was due to the decomposition of hemicellulose. T2 shifted to a lower temperature after delignification. Acetone/water (AW) extraction, hot-water (HW) extraction and delignification (LR) are all significant model terms for the variation of T0; LR is the most significant factor affecting T0, T2 and Residue at 600 °C. The result is helpful in the understanding of the effect of extractives and lignin on the properties of extracted and delignified WF for use in wood-plastic composites (WPCs).

Keywords: composites; wood-plastic composites; nanocellulose; nanocomposites; properties; trends; developments

Publication Review Process: Non-Refereed (Other)

File size: 434 kb(s)

Date posted: 09/20/2013
RITS Product ID: 65588
Current FPL Scientists associated with this product (listed alphabetically)
Ibach, Rebecca E.
Research Chemist
Stark, Nicole M.
Research Chemical Engineer
Tshabalala, Mandla A.
Research Chemist

Additional items that might interest you
View the video celebrating FPL's 100 years of public service in 2010, from the producers of the Greatest Good....view

Research Highlights from FPL....view

Termite Eradication: A search for the Holy Grail.... view

Moisture Management in Residential Construction Series videos...view

Wood Floor Systems in Residential Construction Series videos....view
- FPL's Mission and Strategic Plan -

FPL's mission is to identify and conduct innovative wood and fiber utilization research that contributes to conservation and productivity of the forest resource, thereby sustaining forests, the economy, and quality of life. ... ..more »

- FPL Research Emphasis Areas -
Advanced Composites

As an integral part of the FPL mission, we improve the long-term sustainability of our Nation's forests by creating valuable composite products from biobased materials ... ..more »

Advanced Structures

The FPL has been in the forefront of wood-frame housing research since 1910 and has long been recognized as a world leader in such housing-related areas as engineered wood ... ..more »

Forest Biorefinery

We all know the compelling reasons that the United States needs to reduce its dependence on fossil fuels. Historically, the greatest increases in energy demand have been for transportation fuels ... ..more »


A leader in wood products research for over a century, the FPL is positioning itself to become the lead Federal research facility for the application of nanotechnology in forest products ... more »

Woody Biomass Utilization

Forests in the United States contain a substantial amount of small-diameter, overstocked, and underutilized material.FPL research projects are exploring the potential of the small-diameter ... ..more »