Thermal and mechanical properties of treated and untreated Red Balau (Shorea dipterocarpaceae)/LDPE composites

Red Balau saw dust was heat-treated at 180°C and 200°C for 1 h. Treated and untreated wood flour were compounded with LDPE at 9%, 20%, and 37% by weight and molded in an injection molding machine. Thermal and mechanical properties of the resultant composites were investigated as a function of filler loadings and treatment temperature. Thermogravimetric analysis revealed an increase in degradation peak temperature (Tp) of the heat-treated wood and composites. DSC revealed a decreasing trend in the degree of crystallinity (Xc) of the matrix when heat-treated wood was used as filler. On the other hand, untreated wood showed an increase in Xc with increasing wood content. Tensile modulus increased with heat treatment and filler loading. Furthermore, flexural strength and modulus were found to increase with filler loading.

[1]  R. Rowell,et al.  Cell Wall Chemistry , 2012 .

[2]  G. Ziegmann,et al.  Influence of Particle Concentration and Type on Flow, Thermal, and Mechanical Properties of Wood-Polypropylene Composites , 2010 .

[3]  S. Mohanty,et al.  Sisal Glass Fiber Reinforced PP Hybrid Composites: Effect of MAPP on the Dynamic Mechanical and Thermal Properties , 2010 .

[4]  Michael C. Wiemann,et al.  Characteristics and availability of commercially important woods , 2010 .

[5]  A. Kaboorani.  Thermal Properties of Composites Made of Heat-treated Wood and Polypropylene , 2009 .

[6]  S. Ates,et al.  Technological and chemical properties of heat-treated Anatolian black pine wood. , 2009 .

[7]  Byung-sun Kim,et al.  Effect of Plasma Treatment on the Wood Flour for Wood Flour/PP Composites , 2009 .

[8]  H. Militz,et al.  Characterisation of thermally modified wood: molecular reasons for wood performance improvement , 1998, Holz als Roh- und Werkstoff.

[9]  Helena Pereira,et al.  Wood modification by heat treatment: a review. , 2009 .

[10]  M. Faezipour,et al.  Feasibility of Using Heat Treated Wood in Wood/Thermoplastic Composites , 2008 .

[11]  S. Poncsák,et al.  EFFECT OF THERMAL TREATMENT ON THE CHEMICAL COMPOSITION AND MECHANICAL PROPERTIES OF BIRCH AND ASPEN , 2008 .

[12]  I. Mondragon,et al.  Thermal and crystallization studies of short flax fibre reinforced polypropylene matrix composites: Effect of treatments , 2006 .

[13]  C. Hill,et al.  Wood Modification: Chemical, Thermal and Other Processes , 2006 .

[14]  M. Wolcott,et al.  Thermal properties of lignocellulosic filler-thermoplastic polymer bio-composites , 2005 .

[15]  Roger M. Rowell,et al.  Handbook of wood chemistry and wood composites. , 2005 .

[16]  Scott Renneckar,et al.  Compositional analysis of thermoplastic wood composites by TGA , 2004 .

[17]  R. R. Devi,et al.  Chemical modification of rubber wood with styrene in combination with a crosslinker: effect on dimensional stability and strength property. , 2003, Bioresource technology.

[18]  V. S. Prasad,et al.  The thermal and crystallisation studies of short sisal fibre reinforced polypropylene composites , 2003 .

[19]  L. Avérous,et al.  Antioxidant properties of lignin in polypropylene , 2003 .

[20]  A. Pizzi,et al.  Wheat straw particleboard bonding improvements by enzyme pretreatment , 2003, Holz als Roh- und Werkstoff.

[21]  R. Alén,et al.  Thermochemical behavior of Norway spruce (Picea abies) at 180–225 °C , 2002, Wood Science and Technology.

[22]  Craig Clemons,et al.  Wood-plastic composites in the United States: the interfacing of two industries , 2002 .

[23]  Yob Saed Bin Ismail,et al.  Optimizing impact properties of PP composites by control of spherulitic morphology , 2001 .

[24]  Raimo Alén,et al.  Thermal Behavior of Scots Pine ( Pinus Sylvestris ) and Silver Birch ( Betula Pendula ) at 200-230° , 2000 .

[25]  R. Alén,et al.  Changes in the chemical composition of Norway spruce (Picea abies) at 160-260°C under nitrogen and air atmospheres , 1999 .

[26]  Dennis C. Nagle,et al.  Carbonization of wood for advanced materials applications , 1997 .