Distribution of permethrin on laminated bamboo after the preservative treatment using SC-CO2 as a carrier solvent

The effect of preservative treatment using carbon dioxide as a carrier solvent on wood physical properties and dimensional stability had been observed on three commercial wood species (Agathis sp., Palaquium sp., and Heritiera sp.). For the purpose of the study, wood samples measuring 1,5 (R) x 1,5 (T) x 15 (L) cm were prepared. Treatment was conducted at elevated temperature (50C - 350C) and increased pressure (60 - 80 kgf/cm2) on one occasion with five replicates using two specimens of each wood species for each treatment. The final treatment condition was maintained for three different periods (10, 20, 30 minutes). Results indicated that the physical properties and dimensional stability of the preserved wood were not significantly affected by the application of CO2 impregnation as carrier solvent. Key words: Preservative treatment, Carbon dioxide, Carrier solvent, Wood physical properties, Wood dimensional stability

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Feasibility of supercritical carbon dioxide as a carrier solvent for preservative treatment of wood-based composites

Journal of Wood Science ◽

10.1007/s100860300011 ◽

2003 ◽

Vol 49 (1) ◽

pp. 0065-0072 ◽

Cited By ~ 14

Author(s):

M. Muin ◽

A. Adachi ◽

M. Inoue ◽

T. Yoshimura ◽

K. Tsunoda

Keyword(s):

Carbon Dioxide ◽

Supercritical Carbon Dioxide ◽

Preservative Treatment ◽

Carrier Solvent ◽

Supercritical Carbon

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Solid Dispersions: A Review

International Journal of Drug Delivery Technology ◽

10.25258/ijddt.v4i2.8857 ◽

2014 ◽

Vol 4 (2) ◽

Author(s):

Sumant Saini ◽

Yashwant .

Keyword(s):

Solid Dispersions ◽

Physicochemical Characterization ◽

Water Soluble ◽

Absolute Minimum ◽

Technology Transfers ◽

Molecular Arrangement ◽

Water Soluble Drugs ◽

Carrier Solvent ◽

Preparation Techniques ◽

Selection Of

Solid dispersions are one of the most promising strategies to improve the oral bioavailability of poorly water soluble drugs. By reducing drug particle size to the absolute minimum, and hence improving drug wettability, bioavailability may be significantly improved. This article reviews the various preparation techniques for solid dispersion and compiles some of the recent technology transfers. The different types of solid dispersions based on the molecular arrangement have been highlighted. Some of the practical aspects to be considered for the preparation of solid dispersions, such as selection of carrier, solvent and methods of physicochemical characterization, along with an insight into the molecular arrangement of drugs in solid dispersions are also discussed. In this review, it is intended to discuss the recent advances related on the area of solid dispersions.

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Wood preservatives. Laboratory method for determining the protective effectiveness of a preservative treatment against blue stain in service

10.3403/00210608 ◽

1990 ◽

Keyword(s):

Laboratory Method ◽

Wood Preservatives ◽

Preservative Treatment ◽

Blue Stain ◽

Protective Effectiveness

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Incising as an Aid for the Preservative Treatment of Wood - A Review

Recent Patents on Materials Science ◽

10.2174/1874464811104030201 ◽

2011 ◽

Vol 4 (3) ◽

pp. 201-208 ◽

Cited By ~ 3

Author(s):

Khandkar S. Rahman ◽

Md N. Islam ◽

Saleh M. Musa ◽

Dewan M. N. Alam

Keyword(s):

Preservative Treatment

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Stress–strain relationship model of glulam bamboo under axial loading

Advanced Composites Letters ◽

10.1177/2633366x20958726 ◽

2020 ◽

Vol 29 ◽

pp. 2633366X2095872

Author(s):

Yang Wei ◽

Mengqian Zhou ◽

Kunpeng Zhao ◽

Kang Zhao ◽

Guofen Li

Keyword(s):

Tensile Stress ◽

Compressive Stress ◽

Failure Modes ◽

Axial Loading ◽

Tensile Failure ◽

Stress Strain ◽

Laminated Bamboo ◽

Bamboo Scrimber ◽

Strain Relationship ◽

Strain Model

Glulam bamboo has been preliminarily explored for use as a structural building material, and its stress–strain model under axial loading has a fundamental role in the analysis of bamboo components. To study the tension and compression behaviour of glulam bamboo, the bamboo scrimber and laminated bamboo as two kinds of typical glulam bamboo materials were tested under axial loading. Their mechanical behaviour and failure modes were investigated. The results showed that the bamboo scrimber and laminated bamboo have similar failure modes. For tensile failure, bamboo fibres were ruptured with sawtooth failure surfaces shown as brittle failure; for compression failure, the two modes of compression are buckling and compression shear failure. The stress–strain relationship curves of the bamboo scrimber and laminated bamboo are also similar. The tensile stress–strain curves showed a linear relationship, and the compressive stress–strain curves can be divided into three stages: elastic, elastoplastic and post-yield. Based on the test results, the stress–strain model was proposed for glulam bamboo, in which a linear equation was used to describe the tensile stress–strain relationship and the Richard–Abbott model was employed to model the compressive stress–strain relationship. A comparison with the experimental results shows that the predicted results are in good agreement with the experimental curves.

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