Sökning: "Wood polymers"

Visar resultat 21 - 25 av 85 avhandlingar innehållade orden Wood polymers.

  1. 21. Aspects on wettability and surface composition of modified wood

    Författare :Lars-Elof Bryne; Ove Söderström; Charles R. Frihart; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wettability; contact angle; work of adhesion; Lewis acid-base; modified wood; Building engineering; Byggnadsteknik;

    Sammanfattning : Wood is often combined with other materials such as thermoplastics, adhesives and coatings. In general, combinations of wood and polymers especially in outdoor exposure have poor long-term durability. LÄS MER

  3. 22. A study of wood adhesion and interactions using DMTA

    Författare :Anna Backman Sandlund; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood Physics; Träfysik;

    Sammanfattning : The aim of the work presented in this thesis was to investigate whether the adhesion of glues and lacquers to wood could be studied using dynamic mechanical thermal analysis (DMTA). This method has been widely used to study interactions in polymer blends, copolymers and in polymeric composites but very few investigations had been done on solid wood. LÄS MER

  4. 23. Biochemical modification of wood components

    Författare :Peter Josefsson; Lars Wågberg; Mark Rutland; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cellulose and paper engineering; Cellulosa- och pappersteknik;

    Sammanfattning : The degradation of cellulose found in wood is one of the most important degradation processes for the carbon flux on earth. The degradation is performed by microorganisms that typically use enzymes. LÄS MER

  5. 24. Chromatographic separation of wood constituents

    Författare :Niklas Westerberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biorefinery; mathematical modelling.; Norway spruce; separation; chromatography;

    Sammanfattning : In a modern kraft pulp mill only about 45 % of the incoming wood is present in the pulp and it is mainly composed of cellulose. The remainder of the wood, which is dissolved in order to liberate the cellulose fibres, e.g., hemicellulose and lignin, ends up in the mill´s recovery boiler to recover the latent energy. LÄS MER

  7. 25. Dynamic FT-IR spectroscopy applied to studies on wood polymers

    Författare :Margaretha Åkerholm; KTH; []
    Nyckelord :Cellulose; Cooperation; Dynamic test; Glucomannan; Holocellulose; Spectroscopy; Kraft pulp; Mechanical properties; Orinettion; Picea Abies; Polarised light; Sulfite pulp; Xylan;

    Sammanfattning : .... LÄS MER