scholarly journals Wood-polymer composite: physical and mechanical properties of some wood species impregnated with styrene and methyl methacrylate

2004 ◽  
Vol 7 (4) ◽  
pp. 611-617 ◽  
Author(s):  
Denise Ortigosa Stolf ◽  
Francisco Antonio Rocco Lahr
Keyword(s):  
Mechanical Properties ◽  
Methyl Methacrylate ◽  
Polymer Composite ◽  
Wood Species ◽  
Physical And Mechanical Properties ◽  
Wood Polymer ◽  
Wood Polymer Composite

Mechanical Properties of Barley Straw/HDPE Composites Produced with Extrusion Process

2021 ◽  
Vol 410 ◽  
pp. 593-598
Author(s):  
Anton M. Kuzmin ◽  
Nadir Ayrilmis ◽  
Vladimir N. Vodyakov
Keyword(s):  
Mechanical Properties ◽  
Polymer Composite ◽  
Physical And Mechanical Properties ◽  
Extrusion Process ◽  
Barley Straw ◽  
Processing Temperature ◽  
Screw Extruder ◽  
Wood Polymer ◽  
Twin Screw ◽  
Wood Polymer Composite

This paper is devoted to the study of the technological process for the production of tape from polyethylene and wood-polymer composite by extrusion. At the first stage, the wood-polymer composite granulate was obtained on a co-rotating twin-screw extruder. The tape was made on a Rheomex 19/25 PolyLab OS single-screw extruder with a barrel length L/D = 25. The processing temperature of the wood-polymer composite was in the range of 145 ... 160°C. The tensile strength and elasticity modulus in tension, water absorption per day and density were investigated for the developed wood-polymer composite and polyethylene. It has been found out that for the developed wood-polymer composite, the strength and elastic modulus along the stretch direction increase by 11% and 6%, respectively. Orientation stretching has a significant effect on the physical and mechanical properties of wood-polymer composites.

Morphological, physical, and mechanical properties of silanized wood-polymer composite

2019 ◽  
Vol 54 (11) ◽  
pp. 1403-1412
Author(s):  
Maryam Ghorbani ◽  
Najmeh Poorzahed ◽  
S Mojtaba Amininasab
Keyword(s):  
Methyl Methacrylate ◽  
Polymer Composite ◽  
Physical And Mechanical Properties ◽  
Infrared Analysis ◽  
Propyl Methacrylate ◽  
Wood Polymer ◽  
Wood Polymer Composites ◽  
Link Formation ◽  
Wood Polymer Composite ◽  
Composite Samples

For investigation on the effect of silane compound on practical properties of poplar wood polymer composite, samples were impregnated using vacuum/pressure method with 3-trimethoxysilyl propyl methacrylate, and subsequently with styrene, methyl methacrylate, and mixtures of styrene/methyl methacrylate. Field emission scanning electron microscopy observations and Fourier transform infrared analysis indicated that styrene/methyl methacrylate copolymerized with 3-trimethoxysilyl propyl methacrylate and the resultant polymer tightly contacted to the wood cell walls without noticeable gaps. Impregnation with styrene resulted in a higher density of wood polymer composite compared to methyl methacrylate, which was more obvious in the presence of 3-trimethoxysilyl propyl methacrylate. Mechanical strength of the wood polymer composites improved and the highest strength was obtained for the 3-trimethoxysilyl propyl methacrylate/styrene/methyl methacrylate-modified samples. Maximum hardness was found in 3-trimethoxysilyl propyl methacrylate/styrene/methyl methacrylate-modified samples due to the cross-link formation between modified cell wall and polymer.

Performance of Wood-Polymer Composite Prepared by In Situ Synthesis of Terpolymer within Wood

2010 ◽  
Vol 34-35 ◽  
pp. 1165-1169 ◽  
Author(s):  
Yong Feng Li ◽  
Bao Gang Wang ◽  
Qi Liang Fu ◽  
Yi Xing Liu ◽  
Xiao Ying Dong
Keyword(s):  
Mechanical Properties ◽  
Porous Structure ◽  
Polymer Composite ◽  
Value Added ◽  
Untreated Wood ◽  
Modulus Of Rupture ◽  
Hydroxyl Group ◽  
Wood Polymer ◽  
Wood Polymer Composite

In order to improve the value-added applications of low-quality wood, a novel composite, wood-polymer composite, was fabricated by in-situ terpolymerization of MMA, VAc and St within wood porous structure. The structure of the composite and the reaction of monomers within wood were both analyzed by SEM and FTIR, and the mechanical properties were also evaluated. The SEM observation showed that the polymer mainly filled up wood pores, suggesting good polymerizating crafts. The FTIR results indicated that under the employed crafts, three monomers terpolymerized in wood porous structure, and grafted onto wood matrix through reaction of ester group from monomers and hydroxyl group from wood components, suggesting chemical combination between the two phases. The mechanical properties of the wood-polymer composite involving modulus of rupture, compressive strength, wearability and hardness were improved 69%, 68%, 36% and 210% over those of untreated wood, respectively. Such method seems to be an effective way to converting low-quality wood to high-quality wood.

The effect of processing conditions on the mechanical properties and morphology of self-reinforced wood-polymer composite

2013 ◽  
Vol 34 (10) ◽  
pp. 1567-1574 ◽  
Author(s):  
Jianchen Cai ◽  
Mingyin Jia ◽  
Ping Xue ◽  
Yun Ding ◽  
Xiang Zhou
Keyword(s):  
Mechanical Properties ◽  
Polymer Composite ◽  
Processing Conditions ◽  
Wood Polymer ◽  
Wood Polymer Composite

Application of the modified hybrid rule of mixture (ROHM) and Halpin– Tsai equation for predicting mechanical properties of wood/hemp/polymer composites

2019 ◽  
Vol 106 ◽  
pp. 4-8
Author(s):  
CEZARY GOZDECKI
Keyword(s):  
Mechanical Properties ◽  
Mathematical Models ◽  
Polymer Composites ◽  
Young’S Modulus ◽  
Polymer Composite ◽  
Hybrid Composites ◽  
Young's Modulus ◽  
Wood Polymer ◽  
Wood Particles ◽  
Wood Polymer Composite

Application of the modified hybrid rule of mixture (ROHM) and Halpin–Tsai equation for predicting mechanical properties of wood/hemp/polymer composites. An object of investigations was hybrid wood-polymer composite containing HDPE, hemp fibers and wood particles. The degree of addition of hemp and wood particles ranged from 0 to 60% of filler. The usefulness of the mathematical models ROHM and Halpin-Tsai to predict the Young's modulus of composites was tested. Additionally, experimental research was carried out. It was found that the hemp content in the wood-polymer composite significantly influences the growth of the composite module. The usefulness of mathematical models for predicting the Young's modulus of hybrid composites was also confirmed.

Fabrication and Mechanical Properties of Wood-PMMA Composite

2010 ◽  
Vol 160-162 ◽  
pp. 640-643
Author(s):  
Yong Feng Li ◽  
Duo Jun Lv ◽  
Chi Jiang ◽  
Yi Xing Liu ◽  
Hong Yue Zhang
Keyword(s):  
Mechanical Properties ◽  
Methyl Methacrylate ◽  
Cellular Structure ◽  
Untreated Wood ◽  
Thermal Polymerization ◽  
Modulus Of Rupture ◽  
Dsc Analysis ◽  
Wood Polymer ◽  
Composite Wood ◽  
Wood Polymer Composite

A new composite, wood-polymer composite, was fabricated by formation of poly (methyl methacrylate) in wood cellular structure. Methyl methacrylate (MMA) monomer and a few of 2,2'- azobisisobutyronitrile (AIBN) as an initiator, as well as several drops of pyrimidine as catalyst were first impregnated into wood porous structure under a pressure condition, and then initiated for thermal polymerization through a catalyst-thermal treatment. The mechanical properties of the composite were tested, and the composite was also analyzed by SEM and DSC to further correlate its performance. The results indicated that the modulus of rupture, modulus of elasticity, compression strength and hardness of Wood-PMMA Composite were improved by 68.28%, 110.27%, 62.43%, 357% over those of Untreated Wood, respectively. The SEM observations showed that PMMA generated and filled up wood pores under the employed conditions, and thus reinforced the mechanical properties of wood. DSC analysis suggested that Wood-PMMA Composite was more thermal stability than Untreated Wood as the formation of PMMA within wood pores.

Preparation and Property of Wood Polymer Composite with a Two-Step Method

2009 ◽  
Vol 79-82 ◽  
pp. 1527-1530
Author(s):  
Yong Feng Li ◽  
Yi Xing Liu ◽  
Hai Peng Yu ◽  
Wen Shuai Chen
Keyword(s):  
Mechanical Properties ◽  
Porous Structure ◽  
Polymer Composite ◽  
Cell Walls ◽  
Untreated Wood ◽  
Hydroxyl Group ◽  
Step Method ◽  
Wood Polymer ◽  
Wood Polymer Composite ◽  
Modified Wood

Wood as a porous structure has weak durability and unsatisfactory mechanical properties which limits its utilization. For this reason, the study presents a two-step method to prepare a new modified wood material—Wood Polymer Composite. Maleic anhydride(Man) firstly penetrates into the porous structure of wood, followed by a reaction with wood cell walls. Then, Styrene(St) with some Man and a few amount of initiator, AIBN, permeate through the whole wood and react with the above modified wood. The structural characterization of wood polymer composite with SEM and FTIR indicates that Man reacts successfully with the hydroxyl group of wood cell wall by its anhydride group, and further reacts fully with styrene as a free radical copolymerization form by its double bond; and thus the polymer fills in wood cell lumina as a solid form, which combines the wood cell walls without any evident crack. The testing results of properties show that the mechanical properties of wood polymer composite increase by about 50%-250% over those of unmodified wood, and its durability improve 1.9-4.89 times than untreated wood.

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