Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Abdelkader Chaala"'
Publikováno v:
BioResources, Vol 7, Iss 1, Pp 504-520 (2011)
This study examines the dimensional stability of fast-growing poplar clones wood after treatment by impregnation with methyl methacrylate (MMA). Six hybrid poplar clones from one plantation in Quebec were sampled. The effects of hardening with MMA on
Externí odkaz:
https://doaj.org/article/70b22223686840e49c20aa085738aef8
Publikováno v:
Annals of Operations Research. 248:515-529
We transformed a data envelopment analysis (DEA) optimization model into a robust second-order cone equivalent to immunize against output perturbation in an uncertainty set. The robust DEA framework was then used to assess the effect of a wood harden
Publikováno v:
The Canadian Journal of Chemical Engineering. 93:29-36
Le traitement thermique superficiel du bois permet de rehausser ses proprietes hydrophobe, antifongique et anti-gonflement contribuant a le mettre a l'abri des aleas naturels. Nous avons etudie la pertinence d'un traitement solvothermique d'eprouvett
Publikováno v:
Industrial Crops and Products. 46:304-310
Wood of fast-growing hybrid poplars, consisting of six 6-year-old clones in one plantation in Quebec, was impregnated with methyl methacrylate (MMA) and then polymerized by heat/catalyst method. The mechanical properties (static bending and compressi
Publikováno v:
Journal of Applied Polymer Science. 123:1428-1436
The surface properties of fast-growing poplar clones and their methyl methacrylate (MMA)-hardened wood related to potential end uses were investigated. Samples from 24 trees of six hybrid poplar clones in one plantation in Quebec were hardened with M
Autor:
Sébastien Migneault, Michael P. Wolcott, Abdelkader Chaala, Ahmed Koubaa, Fouad Erchiqui, Karl Englund
Publikováno v:
Wood Science and Technology. 45:521-532
Wood–plastic composites (WPC) were produced with white birch pulp fibers of different aspect ratios (length-to-diameter), high-density polyethylene, and using two common processes: extrusion or injection molding. Three additive levels were also use
Autor:
Michael P. Wolcott, Ahmed Koubaa, Fouad Erchiqui, Sébastien Migneault, Abdelkader Chaala, Karl Englund
Publikováno v:
Composites Part A: Applied Science and Manufacturing. 40:80-85
The aim of this study was to understand the roles of processing method and fiber size on the properties of wood–plastic composites (WPC). Composites were manufactured using extrusion or injection molding (IM) and fibers of different fiber length-to
Autor:
Cornelia Krause, Fouad Erchiqui, Michael P. Wolcott, Abdelkader Chaala, Ahmed Koubaa, Sébastien Migneault, Karl Englund
Publikováno v:
Journal of Applied Polymer Science. 110:1085-1092
Fiber length and distribution play important roles in the processing and mechanical performance of fiber-based products such as paper and fiberboard. In the case of wood–plastic composites (WPC), the production of WPC with long fibers has been negl
Publikováno v:
Wood Material Science and Engineering. 3:62-70
Mercury intrusion porosimetry (MIP) was used to evaluate the impregnation mechanisms of wood by methyl methacrylate (MMA) through examining the changes in porosity, pore volume, pore size distribution and bulk density of solid wood before and after M
Publikováno v:
Biomass and Bioenergy. 31:222-242
This paper describes an analytical approach to determine the chemical composition of bio-oils in terms of macro-chemical families. Bio-oils from the vacuum pyrolysis of softwood bark and hardwood were first fractionated using solvent extraction. Frac