scholarly journals Effect of Wood Fillers on the Viscoelastic and Thermophysical Properties of HDPE-Wood Composite

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
M. Tazi ◽  
M. S. Sukiman ◽  
F. Erchiqui ◽  
A. Imad ◽  
T. Kanit
Keyword(s):  
Polymer Composites ◽  
Thermophysical Properties ◽  
High Density Polyethylene ◽  
Viscoelastic Behavior ◽  
Wood Composite ◽  
Materials Behaviors ◽  
Wood Polymer ◽  
Wood Particles ◽  
Wood Polymer Composites

Wood polymer composites (WPC) have well proven their applicability in several fields of the plasturgy sector, due to their aesthetics and low maintenance costs. However, for plasturgy applications, the characterization of viscoelastic behavior and thermomechanical and thermophysical properties of WPC with the temperature and wood filler contents is essential. Therefore, the processability of polymer composites made up with different percentage of wood particles needs a better understanding of materials behaviors in accordance with temperature and wood particles contents. To this end, a numerical analysis of the viscoelastic, mechanical, and thermophysical properties of composite composed of high density polyethylene (HDPE) reinforced with soft wood particles is evaluated.

Hydrophilic-Hydrophobic Characteristics of Wood-Polymer Composites Filled with Modified Wood Particles

2018 ◽  
Vol 762 ◽  
pp. 176-181
Author(s):  
Jevgenijs Jaunslavietis ◽  
Galia Shulga ◽  
Jurijs Ozolins ◽  
Brigita Neiberte ◽  
Anrijs Verovkins ◽  
...  
Keyword(s):  
Free Energy ◽  
Polymer Composites ◽  
Surface Free Energy ◽  
Moisture Sorption ◽  
Contact Angles ◽  
Work Of Adhesion ◽  
Wood Polymer ◽  
Wood Particles ◽  
Wood Polymer Composites ◽  
Modified Wood

In this study, hydrophobic-hydrophilic characteristics, including contact angle and moisture sorption of a modified wood filler and the wood-polymer composites (WPC) containing it was investigated. The wood filler obtained from aspen sawdust was modified by mild acid hydrolysis and by ammoxidation. Contact angles of the wood particles and the WPC samples were measured with Kruss K100M using the Washburn and Wilhelmy methods, respectively. Work of adhesion was calculated using Young-Dupre equation. Surface free energy as well as its dispersive and polar parts were found using Owens-Wendt-Rabel-Kaelble approach. It was found that the hydrolysis and the ammoxidation led to decrease of the hemicelluloses content in the lignocellulosic matrix. Beside this, the ammoxidation favours the formation of amide bonds in the ammoxidised particles. These changes enhanced the contact angles, decreased the work of adhesion, and decreased surface free energy of the WPC samples filled with the modified particles in comparison with the WPC sample that contained the unmodified ones. The treatment of the wood particles decreased the wettability towards water, but increased it towards recycled polypropylene. This positively effects mechanical properties of the samples.

FTIR characterization of tropical wood–polymer composites

1991 ◽  
Vol 43 (11) ◽  
pp. 2083-2090 ◽  
Author(s):  
M. G. S. Yap ◽  
Y. T. Que ◽  
L. H. L. Chia
Keyword(s):  
Polymer Composites ◽  
Tropical Wood ◽  
Ftir Characterization ◽  
Wood Polymer ◽  
Wood Polymer Composites

Morphological Characterization of the Wood Polymer Composites

2021 ◽  
pp. 93-112
Author(s):  
M. Chandrasekar ◽  
K. Senthilkumar ◽  
T. Senthil Muthu Kumar ◽  
R. Sabarish ◽  
Suchart Siengchin
Keyword(s):  
Polymer Composites ◽  
Morphological Characterization ◽  
Wood Polymer ◽  
Wood Polymer Composites

Eco-Friendly Constituents for Making Wood-Polymer Composites

2016 ◽  
Vol 688 ◽  
pp. 122-130 ◽  
Author(s):  
Galia Shulga ◽  
Brigita Neiberte ◽  
Anrijs Verovkins ◽  
Jevgenijs Jaunslavietis ◽  
Vadims Shakels ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Laboratory Equipment ◽  
Polypropylene Composites ◽  
Recycled Polypropylene ◽  
Wood Polymer ◽  
Wood Particles ◽  
Wood Polymer Composites ◽  
Soda Lignin ◽  
Lignocellulosic Filler ◽  
Hydrolysis Of

The aim of this work was to obtain eco-friendly constituents for making wood-polymer composites (WPCs) by rational utilisation of hardwood residue with its mechanical processing and purposeful chemical modification. To reduce the energy input for residue milling for obtaining a lignocellulosic filler as well as to activate its surface for the further modification, the optimal parameters of low temperature acid hydrolysis of the hardwood residue under mild conditions were found. To enhance the wetting of the lignocellulosic filler with respect to recycled polypropylene, the milled hydrolysed wood particles were modified by ammoxidation. For obtaining a lignin-containing surface tension regulator (compatibiliser) that is able to reinforce the interaction between the constituents at the interface, soda lignin was obtained via delignification of the hydrolysed hardwood residue under laboratory conditions. The developed compatibiliser represented nanoparticles of a non-stoichiometric polyelectrolyte complex, incorporating soda lignin and synthetic polyamine - polyethylenimine. By using appropriate laboratory equipment and the determined technological regime, aspen wood-recycled polypropylene composites were made and tested.

The Chemical Modification of Waste PET and its Application for a Wood-Polymer Composite Binder

2012 ◽  
Vol 488-489 ◽  
pp. 648-653 ◽  
Author(s):  
Polphat Ruamcharoen ◽  
Chor Wayakron Phetphaisit ◽  
Ratree Bumee ◽  
Jareerat Ruamcharoen ◽  
Bussara Niyomdecha ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polymer Composites ◽  
Polyethylene Terephthalate ◽  
Wood Particle ◽  
Wood Composite ◽  
Composite Binder ◽  
Pet Bottles ◽  
Wood Polymer ◽  
Wood Polymer Composites ◽  
Polyurethane Composites

The application of hydroxyl terminated polyethylene terephthalate (PET-OH) as a starting pre-polymer to react with polymeric methylene di-isocyanate (p-MDI) for synthesis of polyurethane as a wood-composite binder was studied. The PET-OH was modified from waste polyethylene terephthalate (PET) bottles by glycolysis reaction. The effect of weight ratios of binder and rubber-wood sawdust particles and the mole ratios of hydroxyl (OH) of PET-OH and isocyanate (NCO) of p-MDI on mechanical properties were investigated. The properties of wood-polymer composites from PET-OH were also compared with the polyurethane composites from polyethylene glycol (PEG) as a commercial polyol. It was found that mechanical properties of wood-polymer composites increased with the increase of binders and polyol contents and then decreased and PET-OH showed the greater properties than PEG. The ratio of wood particle and the binder of 60:40 by weight and the ratio of OH and NCO of 0.01:1 by mole gave the best mechanical properties.

Thermophysical properties of wood-polymer composites

1996 ◽  
Vol 30 (3) ◽  
Author(s):  
MichelF. Couturier ◽  
Kenneth George ◽  
MarcH. Schneider
Keyword(s):  
Polymer Composites ◽  
Thermophysical Properties ◽  
Wood Polymer ◽  
Wood Polymer Composites
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