Search for dissertations about: "reaction wood"

Showing result 1 - 5 of 72 swedish dissertations containing the words reaction wood.

  1. 1. Acetylation of Solid Wood. Wood Properties and Process Development

    University dissertation from Chalmers University of Technology

    Author : Pia Larsson Brelid; Chalmers tekniska högskola.; Chalmers University of Technology.; [1998]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Kemi; Chemistry; acetylation; wood; bending strength; hardness; deformation; adhesive bonding; shear strength; delamination; stability; pH; dielectric properties; power penetration depth; microwave heating;

    Abstract : The influence of acetylation on selected wood properties has been determined for Scandinavian pine and spruce wood, in order to predict the behavior of acetylated wood when it is used in different applications. Only minor differences in both bending strength and the modulus of elasticity were obtained for acetylated wood when compared with unmodified wood, and can, for practical applications, be considered unaltered. READ MORE

  2. 2. Investigating the Reaction Kinetics of Tropical Wood Biomass : A Prospect for Energy Recovery

    University dissertation from Borås : Högskolan i Borås

    Author : Kehinde Oluoti; Högskolan i Borås.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood; Pyrolysis; gasification; char; kinetic parameters; SEM-EDX; AAEM; Resource Recovery; Resursåtervinning;

    Abstract : The utilization of wood biomass for energy recovery purposes is a phenomenon that is increasingly attracting attentions from researchers, companies and countries all over the world. The effect of climate change as largely represented by global warming leading to glacier ice melting and an unprecedented rise in sea level is a worrisome development. READ MORE

  3. 3. Diffusive Mass Transport of Ions in Wood

    University dissertation from Chalmers University of Technology

    Author : Reddysuresh Kolavali; Chalmers tekniska högskola.; Chalmers University of Technology.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sorption; mass transport; wood; impregnation;

    Abstract : Understanding the conditions that control the mass transfer of various chemicals/ions in wood is of great importance when it is subjected to various processes. Homogeneous impregnation with chemicals/ions, for example, increases the uniformity of the treatments to which the wood is subjected, reduces reaction times and may increase the yield of the final products. READ MORE

  4. 4. Drying and Pyrolysis of Logs of Wood

    University dissertation from Chalmers University of Technology

    Author : Jenny Larfeldt; Chalmers tekniska högskola.; Chalmers University of Technology.; [2000]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fysik; Physics; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; wood; single particle; pyrolysis; drying; heat transfer properties; structural changes;

    Abstract : This work concerns log firing in small-scale boilers for house heating, which in Sweden meets a heat demand of 12 TWh a year. In boilers used for domestic central heating in the sizes of 10 to 30 kW the predominant combustion technique is grate firing. READ MORE

  5. 5. Cellulose-fiber-based thermal insulation materials with fungal resistance, improved water resistance and reaction-to-fire properties

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Chao Zheng; KTH.; [2017]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biorefinery; birch bark; cellulose; reaction-to-fire properties; fungal resistance; thermal insulation; water resistance; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Abstract : Thermal insulation materials made from natural fibrous materials, such as cellulose fibers, have advantages over others from a sustainability point of view. However, cellulosic materials are generally prone to mold and absorb moisture, and these have negative effects on the insulation properties, the durability of insulation materials, and interior air quality. READ MORE