Paper Information

Journal:   INTERNATIONAL JOURNAL OF ENGINEERING   APRIL 2004 , Volume 17 , Number 1 (TRANSACTIONS B: APPLICATIONS); Page(s) 95 To 104.
 
Paper: 

DYNAMIC MECHANICAL ANALYSIS OF COMPATIBILIZER EFFECT ON THE MECHANICAL PROPERTIES OF WOOD FLOUR-HIGH-DENSITY POLYETHYLENE COMPOSITES

 
 
Author(s):  , TAJVIDI M., , FALK R.H.
 
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Abstract: 
In this study, effect of MAPE (maleic anhydride polyethylene) as the compatibilizer ‎on the mechanical properties of wood-flour polyethylene composites has been ‎investigated by suing Dynamic Mechanical Analysis (DMA). Composites were made ‎at 25% and 50% by weight fiber contents and 1% and 2% compatibilizer respectively. ‎Controls were also made at the same fiber contents without the compatibilizer. Static ‎mechanical tests including tensile and bending tests were performed. Temperature ‎scans in the range of -110 to +100°C was also conducted. Results indicated ‎improvements in the mechanical properties due to the compatibilizer addition. Storage ‎modulus values were higher in the case of coupled composites especially at 50% fiber ‎loading. Glass transition was hard to detect in all composite systems while increasing ‎fiber content slightly shifted alpha transition to higher temperatures. MAPE had ‎negligible effects on the main transitions but the effect of fiber content on the ‎intensity and temperature of alpha transition seemed to be proportional to the fiber ‎content. Mechanical loss factor spectra showed that at 50% fiber content, the ‎compatibilizer caused a reduction in tan#d values indicating less energy loss when the ‎compatibilizer was present‏.‏
 
Keyword(s): COMPOSITES, WOOD FLOUR, HIGH-DENSITY POLYPROPYLENE, COMPATIBILIZER, DYNAMIC MECHANICAL ANALYSIS
 
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