Effect of Acetylation of Wood Flour and MAPP Content during Compounding on Physical Properties, Decay Resistance, Contact Angle, and Morphology of Polypropylene/Wood Flour Composites

Malakani, Mehdi; Bazyar, Behzad; Talaiepour, Mohammad; Hemmasi, Amir Hooman; Ghasemi, Ismaeil

doi:10.15376/biores.10.2.2113-2129

Cited by 15 publications

(9 citation statements)

References 17 publications

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“…According to available reports, 165 to 195 °C is also an acceptable range for preparing PP-based NFRPCs (Zhou et al 2013;Malakani et al 2015;Reixach et al 2015). By contrast, the hot-pressing temperature for preparing conventional plywood using UFR as adhesive is usually approximately 100 °C (Hua 2002;Song et al 2016).…”

Section: Process Optimization Of Wood Veneer/pp Film Composites Prelimentioning

confidence: 99%

Utilization of Polypropylene Film as an Adhesive to Prepare Formaldehyde-free, Weather-resistant Plywood-like Composites: Process Optimization, Performance Evaluation, and Interface Modification

Song¹,

Wei²,

Li³

et al. 2016

BioResources

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To develop formaldehyde-free wood-based composites, plywood-like composites (WV/PPF) were prepared using wood veneer (WV) with polypropylene film (PPF) as a novel formaldehyde-free, water-resistant adhesive. To prepare WV/PPF, the effects of hot-pressing conditions (temperature, 165 to 195 °C; pressure, 0.9 to 1.3 MPa; duration, 40 to 70 s/mm; and adhesive dosage between adjacent WVs, 100 to 200 g/m 2 ) were investigated. Results showed that conditions at 180 °C, 0.9 MPa, 70 s/mm, and 150 g/m 2 gave WV/PPF desirable physical-mechanical properties. Then, WV/PPF was compared with plywood-like composites using, respectively, polyethylene film (PEF), urea-formaldehyde resin (UFR), and phenol-formaldehyde resin (PFR) as adhesives. Results showed that the physical-mechanical properties of WV/PPF were favored over WV/PEF and WV/UFR, and were comparable to those of WV/PFR. Maleic anhydride grafted polypropylene (MAPP) or γ-aminopropyltriethoxysilane (APTES) surface modification of WV was performed to enhance the interface compatibility of WV/PPF. Results showed that the physical-mechanical properties of modified WV/PPF were favored over those of WV/PFR; MAPP modification was better for shear properties, while APTES modification was better for dimensional stability and flexural properties. Overall, the environmental and technological benefits demonstrated the potential of WV/PPF as a novel construction and building material.

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Section: Process Optimization Of Wood Veneer/pp Film Composites Prelimentioning

confidence: 99%

Utilization of Polypropylene Film as an Adhesive to Prepare Formaldehyde-free, Weather-resistant Plywood-like Composites: Process Optimization, Performance Evaluation, and Interface Modification

Song¹,

Wei²,

Li³

et al. 2016

BioResources

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“…The impregnation of the AN-co-BMA-HNC into the RW reduced the amount of moisture absorbed in the WPNCs. This was due to the new chemical bonding between the polar or hydrophilic nature of the lignocellulosic fibers and the hydrophobic nature of the polymer matrix, which aided in reducing the moisture absorbed in all of the WPNCs (Malakani et al 2015). Therefore, the 50:50 AN-co-BMA-HNC WPNCs showed the lowest moisture absorption, followed by the 70:30 AN-co-BMA-HNC WPNCs, BMA-HNC WPNCs, AN-HNC WPNCs, and RW.…”

Section: Moisture Absorption Analysismentioning

confidence: 99%

Evaluation of Acrylonitrile/Butyl Methacrylate/Halloysite Nanoclay Impregnated Wood Polymer Nanocomposites

2017

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Acrylonitrile/butyl methacrylate/halloysite nanoclay wood polymer nanocomposites (AN-co-BMA-HNC WPNCs) were prepared via the impregnation method, and the effect of different ratios of polymers was investigated. The WPNCs were characterized through weight percent gain, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), the three-point flexural test, dynamic mechanical thermal analysis (DMTA), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) analysis, and the moisture absorption test. The weight percent gain in the 50:50 AN-co-BMA-HNC WPNCs was the highest compared with the raw wood (RW) and other WPNCs. The FT-IR results confirmed that polymerization took place in the nanocomposites, especially in the 50:50 AN-co-BMA-HNC WPNCs, with a reduction of hydroxyl groups. The SEM results revealed that the 50:50 AN-co-BMA-HNC WPNCs showed the best surface morphology. The 50:50 AN-co-BMA-HNC WPNCs showed the highest flexural strength and modulus of elasticity. The results revealed that the storage modulus and loss modulus of the AN-co-BMA-HNC WPNCs were higher, while the tan δ of the ANco-BMA-HNC WPNCs was lower, compared with the RW. The AN-co-BMA-HNC WPNCs also exhibited higher thermal stability and exhibited remarkably lower moisture absorption compared with the RW. Overall, this study demonstrated that the 50:50 AN-co-BMA ratio was the most suitable to be introduced into RW.

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“…Research to improve the moisture resistance of WPCs [9][10][11][12][13] has also been done. In addition, studies to develop the interfacial strength of PP and WF, i.e., strong bonding between PP and WF [1,[14][15][16][17][18][19][20][21][22][23][24][25][26][27], have also been reported. The development in the mechanical properties of wood-plastic composite can also be one step ahead by pulverization of the wood flour.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Performance of Wet and Dry Pulverized Wood Flour Reinforced PP Composites

et al. 2019

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In this paper, we exclusively studied the effects of dry and wet pulverization of different wood flours on the fatigue performance of polypropylene (PP)/wood flour (WF) composites. Wood flours obtained from cypress and Scots pine trees were pulverized in both dry and wet conditions at two different mill-plate gaps, 200 µm and 350 µm, and were used as reinforcement in PP matrices. Master batches of PP with different types of pulverized WF were compounded before processing in an extruder. The PP/WF composites of initial WF were also prepared for comparison. The prepared composites were analyzed by tensile and fatigue tests. It was found that the tensile properties of wood/polypropylene composites were affected by the pulverization of WF. Fatigue test results displayed that wet pulverization of short cypress flour had a negative effect on the fatigue life of PP/WF composites, while wet pulverization of long cypress flour and pine flour had a positive effect on the fatigue life of PP/WF composites.

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Effect of Acetylation of Wood Flour and MAPP Content during Compounding on Physical Properties, Decay Resistance, Contact Angle, and Morphology of Polypropylene/Wood Flour Composites

Cited by 15 publications

References 17 publications

Utilization of Polypropylene Film as an Adhesive to Prepare Formaldehyde-free, Weather-resistant Plywood-like Composites: Process Optimization, Performance Evaluation, and Interface Modification

Utilization of Polypropylene Film as an Adhesive to Prepare Formaldehyde-free, Weather-resistant Plywood-like Composites: Process Optimization, Performance Evaluation, and Interface Modification

Evaluation of Acrylonitrile/Butyl Methacrylate/Halloysite Nanoclay Impregnated Wood Polymer Nanocomposites

Fatigue Performance of Wet and Dry Pulverized Wood Flour Reinforced PP Composites

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