Fundamental studies on wood/cellulose-plastic composites: effects of composition and cellulose dimension on the properties of cellulose/PP composite

Kumari, Rashmi; Ito, Hirokazu; Takatani, Masahiro; Uchiyama, Miho; Okamoto, Tadashi

doi:10.1007/s10086-007-0889-5

Cited by 59 publications

(30 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The effect of this factor on WPC mechanical properties was mainly evaluated for typical WPCs containing small wood particles (wood flour) or short wood fibres. WPCs with polypropylene (PP) (Zaini et al 1996;Lee et al 2001;Stark and Rowlands 2003;Khalil et al 2006;Salemane and Luyt 2006;Kumari et al 2007;Cheng et al 2009;Pan et al 2009) and high density polyethylene (HDPE) (Cui et al 2008;Migneault et al 2008Migneault et al , 2009Bouafif et al 2009) as the matrix were primarily studied. Results of some studies have shown that the effect of wood particle size on WPC mechanical properties was considerable, whereas others revealed that this effect was slight.…”

Section: Introductionmentioning

confidence: 99%

Effect of industrial wood particle size on mechanical properties of wood-polyvinyl chloride composites

et al. 2011

View full text Add to dashboard Cite

Wood-polyvinyl chloride (PVC) composites were prepared using industrial wood particles used for manufacturing three-layer particleboards. The effect of particle size (0.25-0.5, 0.5-1, 1-2, and 2-4 mm) on the mechanical properties of the composites was investigated. The effect of cross-section size (4 × 10, 6 × 15 and 8 × 20 mm 2 ) of composite pieces made by an injection moulding method was also studied. Both the particle size and specimen crosssection area significantly influenced these properties. The tensile and flexural properties as well as the impact strength in general increased with increasing particle size, and decreased with increasing cross-section size. Einfluss von industrieüblichen Holzspanabmessungen auf die mechanischen Eigenschaften von Holz-PVC-VerbundwerkstoffenZusammenfassung Holz-PVC-Verbundwerkstoffe wurden unter Verwendung industrieüblicher Holzspäne, wie sie zur Herstellung von dreischichtigen Spanplatten eingesetzt werden, hergestellt. Der Einfluss der Spangröße (0,25-0,5, 0,5-1, 1-2 und 2-4 mm) auf die mechanischen Eigenschaften der Verbundwerkstoffe sowie der Einfluss der Querschnittsgröße (4 × 10, 6 × 15 and 8 × 20 mm 2 ) der mittels Spritzgusstechnik hergestellten Verbundwerkstoffe wurde

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of industrial wood particle size on mechanical properties of wood-polyvinyl chloride composites

et al. 2011

View full text Add to dashboard Cite

show abstract

“…[1][2][3] It is well known that the physical and mechanical properties of WPC are largely dependent on the crystal structure near the interface and the solid-state morphology. [1,[4][5][6] Most of the WPC, based on both polypropylene (PP) and high-density polyethylene (HDPE) with different species of wood particles, show natural immiscibility between hydrophilic wood particles and hydrophobic polyolefin matrix. The interface fails to efficiently transfer stress from the matrix to the wood particles when loaded and the interfacial adhesion between them is typically weak.…”

Section: Introductionmentioning

confidence: 99%

“…The interface fails to efficiently transfer stress from the matrix to the wood particles when loaded and the interfacial adhesion between them is typically weak. [5,6] Incorporation of maleic anhydride-grafted polyolefin is one of the classical methods to improve adhesion between polyolefin matrix and wood particles and it has been widely used to generate a variety of WPC with a wide range of properties. [5][6][7] It has been shown that the process of polyolefin crystallization in WPC is greatly influenced by the heterogeneous nucleation by wood surface and the effects of compatibilizer.…”

Section: Introductionmentioning

confidence: 99%

“…[5,6] Incorporation of maleic anhydride-grafted polyolefin is one of the classical methods to improve adhesion between polyolefin matrix and wood particles and it has been widely used to generate a variety of WPC with a wide range of properties. [5][6][7] It has been shown that the process of polyolefin crystallization in WPC is greatly influenced by the heterogeneous nucleation by wood surface and the effects of compatibilizer. [8] During the last few years, studies of the crystallization behavior of WPC by the differential scanning calorimetry (DSC) have become a subject of increasing interest.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Isothermal Crystallization Kinetics of Highly Filled Wood Plastic Composites: Effect of Wood Particles Content and Compatibilizer

Wang

Liu

et al. 2011

Journal of Macromolecular Science, Part B

View full text Add to dashboard Cite

The isothermal crystallization behavior and crystal structure of the polypropylene (PP) component in wood plastic composites (WPC) with respect to wood particle content and maleic anhydride-grafted polypropylene (MAHPP) compatibilizer were studied by means of polarized optical microscopy, scanning electron microscopy, x-ray diffraction, and differential scanning calorimetry. It was found that under the experimental conditions of this research, the speed of crystallization of PP was faster in WPC with MAHPP than in composites without MAHPP. This is ascribed to the difference in undercooling due to the change in the equilibrium melting temperatures (T 0 m ) of the PP component in WPC due to the addition of wood flour and MAHPP compatibilizer. T 0 m decreased with the increase of wood particle content, and it decreased more severely with the addition of wood flour than the addition of compatibilizer. The half-crystallization time was the smallest in PP/wood composites, intermediate in PP/wood/compatibilizer system, and the largest in pure PP under the same undercooling. The fast crystallization in PP/wood composites is ascribed to the heterogeneous nucleation effects of wood particles, which could be hindered by the MAHPP compatibilizers; this was verified by the higher fold surface free energy in WPC with compatibilizer than in WPC without compatibilizer.

show abstract

“…The instrument automatically collected data, was saved in txt format. Origin software was used to make a TGA curve (Rashmi et al 2007;Li et al 2010). Analysis of multiplicity is widely used for comparison between two groups of all independent multi-samples.…”

Section: Fig 2 Typical X-ray Diffraction Distribution Curve Of Phylmentioning

confidence: 99%

Comparative Research between Rhizome and Culm of Phyllostachys pubescens Based on Thermal Analysis

Yang

Лю

et al. 2016

BioResources

View full text Add to dashboard Cite

A systematic study was conducted on P. pubescens by analyzing thermal characteristics of its rhizome and culm (1.5 m) at different ages, using various analyses such as X-ray diffraction (XRD), differential scanning calorimetry (DSC), and thermogravimetry (TG). For both the rhizome and culm of P. pubescens, the relative crystallinity (Cr) of cellulose increased and then appreciably decreased with increasing age, but the rhizome contained about 10% less Cr than culm. However, the glass transition temperature (Tg) of culm (268.8 to 273.8 °C) was higher than in the rhizome (213.9 to 219.4 °C). The extrapolated initial decomposition temperature (Te) of 1-, 3-, and 5-year-old rhizome were 263.7 °C, 266.1 °C, and 263.9 °C, respectively; the Te of culms of the same age were 289.7 °C, 282.8 °C, and 283.4 °C, respectively. Variance analysis showed no significant differences in the Te of either rhizome or culm of different ages. Taking the chemical characteristics into consideration, it was concluded that the rhizome has a stable composition and good heat resistance.

show abstract

Fundamental studies on wood/cellulose-plastic composites: effects of composition and cellulose dimension on the properties of cellulose/PP composite

Cited by 59 publications

References 17 publications

Effect of industrial wood particle size on mechanical properties of wood-polyvinyl chloride composites

Effect of industrial wood particle size on mechanical properties of wood-polyvinyl chloride composites

Isothermal Crystallization Kinetics of Highly Filled Wood Plastic Composites: Effect of Wood Particles Content and Compatibilizer

Comparative Research between Rhizome and Culm of Phyllostachys pubescens Based on Thermal Analysis

Contact Info

Product

Resources

About