Sökning: "per larsson MOISTURE CONTENT"

Hittade 4 avhandlingar innehållade orden per larsson MOISTURE CONTENT.

  1. 1. Wood Plastic Composites made from Modified Wood : Aspects on Moisture Sorption, Micromorphology and Durability

    Författare :Kristoffer Segerholm; Ove Söderström; Magnus Wålinder; Mats Westin; Pia Larsson Brelid; Per Johan Gustafsson; KTH; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Wood plastic composites; WPC; acetylation; heat treatment; furfurylation; moisture sorption; micromorphology; decay; UV laser; soil test; Biomaterials; Biomaterial;

    Sammanfattning : Wood plastic composite (WPC) materials have seen a continuous market growth worldwide in the last decade. So-called extruded WPC profiles are today mainly used in outdoor applications, e.g. decking, railing and fencing. LÄS MER

  3. 2. Dimensional Stability of Paper : Influence of Fibre-Fibre Joints and Fibre Wall Oxidation

    Författare :Per A. Larsson; Lars Wågberg; Mikael Lindström; Lars Berglund; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cellulose and paper engineering; Cellulosa- och pappersteknik;

    Sammanfattning : Papper är ett mycket mångsidigt material. Trots detta finns det ett flertal egenskaper som begränsar papperets användbarhet. Ett av de större problemen med cellulosa- och lignocellulosafibrer är att de sänker sin fria energi genom att sorbera vatten, och denna sorption förändrar papperets dimensioner. LÄS MER

  4. 3. Hygro- and hydroexpansion of paper : Influence of fibre-joint formation and fibre sorptivity

    Författare :Per A. Larsson; Lars Wågberg; Kaarlo Niskanen; KTH; []
    Nyckelord :;

    Sammanfattning : Paper is a versatile, cheap and environment-friendly material. Nevertheless, there are several factors limiting its usefulness, and one of the major issues is that cellulosic and ligno-cellulosic fibres spontaneously sorb water. At the same time, the water uptake changes the dimensions of the paper. LÄS MER

  5. 4. Towards Understanding the Pelletizing Process of Biomass : Perspectives on Energy Efficiency and Pelletability of Pure Substances

    Författare :Stefan Frodeson; Jonas Berghel; Sylvia Larsson; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Pelletability; wood pellets; densification; chemical composition; Miljö- och energisystem; Environmental and Energy Systems;

    Sammanfattning : The use of fossil resources has to decrease and the use of renewable resources has to increase significantly to mitigate the climate change. In this change towards more renewable resources, biomasses will play an important role, both for energy use and for products. LÄS MER