The effect of wood extractives on the thermal stability of different wood-LLDPE composites
Date
2009
Authors
Shebani A.N.
van Reenen A.J.
Meincken M.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The thermal stability of wood polymer composites made with extractive-free wood from four different wood species was studied. Hot water (HW) extractives, ethanol/cyclohexane (E/C) extractives and both types of extractives were eliminated from A. cyclops, E. grandis, P. radiata and Q. alba. Composites of LLDPE and 10 wt% of wood were prepared, using poly vinyl alcohol-co-ethylene (EVOH) as a compatibilizer. The thermal degradation behavior of the composites was characterized with thermogravimetric analysis (TGA). The obtained results showed that in all cases, the degradation temperatures shifted to higher values after removal of the extractives. The removal of E/C extractives was less effective in its improvement of the thermal stability than the removal of HW extractives. The largest improvement on the thermal stability of WPCs was achieved when both types of extractives (E/C and HW) were removed. © 2008 Elsevier B.V. All rights reserved.
Description
Keywords
Degradation, Ethylene, Gravimetric analysis, Polymer matrix composites, Polymers, Thermogravimetric analysis, Water, Wood, Degradation temperature, Degradation temperatures, Hot waters, Radiata, Thermal degradations, Thermal stabilities, Thermal stability, Vinyl alcohols, Wood extractives, Wood polymers, Thermodynamic stability, Cyclohexane, Ethanol, Ethylene, Extractives, Gravimetry, Hot Water Heating, Polymer Wood Combinations, Polyvinyl Alcohol, Pyrolysis, Thermal Analysis, Thermal Stability, Wood Products
Citation
Thermochimica Acta
481
02-Jan
481
02-Jan