Wood-Polymer Composites

Li, Yongfeng

doi:10.5772/17579

Cited by 19 publications

(16 citation statements)

References 79 publications

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“…The above is understandable, since peroxides in general can initiate free radical reactions between lignocellulosic materials (fibers/particles/flour) and polymer matrix systems, and organic peroxides such as DCP and BOP in particular enhance interfacial adhesion between them. [65][66][67][68][69] Besides this, the strength values of WPCs shown in Figure 3 suggest that BOP also improves the adhesion, though not to the same extent as DCP, which is understandable, as explained earlier, due to differences in their reactivity as well as the lower MFI. Higher impact strength of composite C over that of composite E (both having MAH and coating by MAPP) may be due to increased amount of DCP in the former (composite C) compared to the latter (composite E).…”

Section: Mechanical Propertiesmentioning

confidence: 95%

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Effect of domestic compatabilizer on the performance of polypropylene-sawdust composites

Santos

Trombetta²,

Flores-Sahagun

et al. 2015

Journal of Composite Materials

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Greater concern for environmental safety and fuel economy has increased interest in the use of renewable resources for development of new materials. Wood-plastic composites, made of recycled plastic and wood wastes, are very attractive in this respect, making this one of the most dynamic areas of new developments in the plastics industry in the past decade. This paper presents the preparation and characterization of polypropylene-sawdust composites by compression molding using maleated polypropylene (MAPP) produced in Brazil by reactive extrusion, with different amounts of two types of peroxides. The MAPP was characterized for thermal properties, melt flow index, and chemical structure, while the composites containing both uncoated and MAPP-coated sawdust were characterized for mechanical properties to understand the effect of coating as well as to compare these properties with those of composites prepared with commercial MAPP. The MAPP was efficient as a compatabilizer for polypropylene/sawdust composites. Better impact and tensile properties were observed in composites prepared with medium and high melt flow index compatibilizer concentrations, respectively.

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Section: Mechanical Propertiesmentioning

confidence: 95%

“…This is further corroborated by the fact that each of the radicals generated from the peroxides has different reactivity. 68 Also, DCP has a much greater effect on chain scission (radical generator) than BPO. Thus, samples F4 and F6 (both prepared with 0.5 wt.…”

Section: Melt Flow Indexmentioning

confidence: 99%

Effect of domestic compatabilizer on the performance of polypropylene-sawdust composites

Santos

Trombetta²,

Flores-Sahagun

et al. 2015

Journal of Composite Materials

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“…Wood specimens treated with styrene acrylonitrile (SAN) polymer showed better weatherability than those treated with montmorillonite (MMT) (Li 2011 ). Clay based composites with SAN as polymer matrix showed improved mechanical strength and fi re retardancy (Bourbigot et al 2004 ;Jang and Wilkie 2005 ).…”

Section: Introductionmentioning

confidence: 98%

Physical properties of simul (red-silk cotton) wood (Bombax ceiba L.) chemically modified with styrene acrylonitrile co-polymer and nanoclay

2012

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Wood plastic composites have been prepared based on simul wood ( Bombax ceiba L.), which was vacuum impregnated with the styrene acrylonitrile (SAN) co-polymer nanoclay (nnc) intercalating system in the presence of glycidyl methacrylate (GMA), a crosslinking agent. The impact of nanoclay was investigated on the mechanical, thermal, dynamic mechanical behavior, and the biodegradability of the resultant wood polymer nanocomposite (WPC nnc ) was investigated. The tensile strength, tensile modulus, fl exural strength, and fl exural modulus of the composite were relatively higher in the presence of 2 phr nanoclay. The limiting oxygen index values showed self-extinguishing behavior of the WPC nnc . Furthermore, the storage moduli (E ′ ) and damping index (tan δ ) of these products were high. WPC SAN/GMA/nnc exhibit higher biodegradability compared to WPC SAN/GMA .

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“…Cell lumen impregnation of wood creates a material in which the polymer fills the wood cell cavities, which increases the stability of the internal structure of the wood. Such modification results in a material with higher resistance to crushing and higher overall stiffness and hardness . In the case of extension the polymer filling the cell cavity decreases freedom of deformation of the entire cell, whereas in the case of compression it retards buckling of the cell walls oriented parallel to the external compressing forces.…”

Section: Introductionmentioning

confidence: 99%

Toughness of Scots pine ‐ polymethyl methacrylate composite

Kyzioł

Szwabowicz

2018

Polymer Composites

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A series of 1,600 samples of the sapwood of Scots pine (Pinus sylvestris), part of them in natural state, but majority subjected to polymerization with various level of impregnation with methyl methacrylate, were tested for toughness on Charpy's impact machine. The goal of the experiment was to investigate how polymerization improves toughness and, additionally, how exposure to low temperatures and to the action of seawater influences this property of the material tested. It was found that within impregnation levels and temperatures tested variability of toughness due to these two factors is almost linear and in practical considerations may be predicted based on an empirical formula. It was also found that exposure to the action of seawater weakens the material. To verify anisotropy of toughness in the plane perpendicular to the grain all samples were consistently cut out such that one pair of opposite lateral faces were tangent to the growth rings. Half of the whole set of samples was fractured with an impact directed perpendicular to the growth rings and the other half with an impact directed in the tangential direction. The results show that although in general toughness is slightly higher in the direction perpendicular to the growth rings than in the tangent direction, the difference may be neglected in practical considerations. POLYM. COMPOS., 40:811–822, 2019. © 2018 Society of Plastics Engineers

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Wood-Polymer Composites

Cited by 19 publications

References 79 publications

Effect of domestic compatabilizer on the performance of polypropylene-sawdust composites

Effect of domestic compatabilizer on the performance of polypropylene-sawdust composites

Physical properties of simul (red-silk cotton) wood (Bombax ceiba L.) chemically modified with styrene acrylonitrile co-polymer and nanoclay

Toughness of Scots pine ‐ polymethyl methacrylate composite

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