Utilization of Decayed Wood for Polyvinyl Chloride/Wood Flour Composites

In this work, the effects of wood flour and tetraethyl orthosilicate (TEOS) content on the fusion time, fusion torque, fusion temperature, and fusion energy of polyvinyl chloride/wood flour (PVC/WF) composites were studied. Plasma-assisted surface treatment of WF before modifying with TEOS to form the silica nanoparticles on the surface of wood flour plays a role as a reinforcement of the phase interaction. This modification was confirmed by X-ray photoelectron spectroscopy (XPS) and field emission scanning electron microscopy (FESEM) techniques. Moreover, BET data showed that specific surface area and volume of plasma treated WF and TEOS modified WF (WS) were considerably improved in comparison with original WF. By increasing WF, a remarkable increase in time, temperature, and energy of mixing process led to the enhancement of fusion torque. In the case of composite using WS, the increase of TEOS content resulted in shorter fusion time, whereas the other fusion characteristics of composites increased. The investigation of mechanical and rheological properties such as Young’s modulus and dynamic storage modulus G′ showed the stiffness of the PVC/WF composites has been significantly improved with increasing wood flour and modifier contents. The research showed an application of nanoparticles in the industrial production of polymer composite materials.

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Effect of Lignocellulosic Materials on the Properties of Thermoplastic Polymer/Wood Composites

Holzforschung ◽

10.1515/hf.2000.033 ◽

2000 ◽

Vol 54 (2) ◽

pp. 197-200 ◽

Cited By ~ 16

Author(s):

M. Takatani ◽

H. Ito ◽

S. Ohsugi ◽

T. Kitayama ◽

M. Saegusa ◽

...

Keyword(s):

Polyvinyl Chloride ◽

Fracture Strength ◽

Water Resistance ◽

Wood Flour ◽

Lignocellulosic Materials ◽

Thermoplastic Polymer ◽

Wood Composites ◽

Composite Board ◽

Board Performance ◽

Average Size

Summary The effect of lignocellulosic materials on the board performance of thermoplastic polymer/wood composites was examined by using soft wood flours of 20 mesh- and 120 mesh-pass, steam-exploded beech flour, and two kinds of thermoplastic polymers, polyvinyl chloride and polystyrene. Steam-exploded wood flour was found to be one of the best lignocellulosic materials in terms of fracture strength and water resistance of the composite board. The properties of the composites are dependent not only on the lignocellulosic materials and polymers, but also on the average size of wood flour. Generally, a flour of 120 mesh pass gave composites of better performance than that of 20 mesh pass, but the tendency was reversed when steam-exploded beech flour was used.

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Influence of various wood modifications on the properties of polyvinyl chloride/wood flour composites

Journal of Applied Polymer Science ◽

10.1002/app.34647 ◽

2011 ◽

Vol 125 (1) ◽

pp. 308-312 ◽

Cited By ~ 13

Author(s):

Marcus Müller ◽

Itana Radovanovic ◽

Timo Grüneberg ◽

Holger Militz ◽

Andreas Krause

Keyword(s):

Polyvinyl Chloride ◽

Wood Flour

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Synthesis and characterization of polyvinyl chloride/wood flour/organoclay ternary composites

Polymers and Polymer Composites ◽

10.1177/09673911211031139 ◽

2021 ◽

pp. 096739112110311

Author(s):

Chaouki Bendjaouahdou ◽

Khanssa Aidaoui

Keyword(s):

Polyvinyl Chloride ◽

Wood Flour ◽

Untreated Wood ◽

Mechanical Tests ◽

Elongation At Break ◽

Mechanical And Physical Properties ◽

Organically Modified ◽

Chemically Treated ◽

Potential Synergy

Polyvinyl chloride/wood flour (WF)/organoclay (OMMT) ternary composites were prepared by melt blending. Chemically treated and untreated pine WF were used as filler, and organically modified montmorillonite or OMMT was added in order to get a potential synergy effect between polyvinyl chloride, untreated wood flour (UWF), or chemically treated WF. The OMMT loading in the composites was 0.5, 1, or 1.5 wt%. The chemically treated and UWF loadings were 1, 5, and 10 wt%. The composite specimens were subjected to mechanical tests (evaluation of tensile strength, elongation at break, and Shore A hardness), thermal stability (Beilstein test), processability characterizations, water resistance absorption, and morphological (optical microscopy) observations. The main results showed that the chemically treated WF were more efficient than the UWF for improving the mechanical and physical properties of polyvinyl chloride. Similar results were reported in the scientific literature. Therefore the chemically treated WF can be a cheap, eco-friendly, and renewable substitute for chalk as a filler which is normally used in the fabrication of Polyvinylchloride based cable insulators.

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