کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
675280 | 1459601 | 2009 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: The effect of wood extractives on the thermal stability of different wood-LLDPE composites The effect of wood extractives on the thermal stability of different wood-LLDPE composites](/preview/png/675280.png)
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.
Journal: Thermochimica Acta - Volume 481, Issues 1–2, 5 January 2009, Pages 52–56