Sökning: "Magnus Paulsson"

Visar resultat 1 - 5 av 13 avhandlingar innehållade orden Magnus Paulsson.

  1. 1. Electron transport in pi-conjugated systems

    Författare :Magnus Paulsson; Department of Physics Linkoping University; []
    Nyckelord :Physics; Fysik;

    Sammanfattning : .... LÄS MER

  2. 2. Electron transport in π-conjugated systems

    Författare :Magnus Paulsson; Libero Zuppiroli; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : This thesis deals with theoretical studies of electron localization and conductance in conjugated molecular systems. Anderson localization of electrons is examined for nearly one-dimensional systems. This work was performed to understand the peculiar electronic properties of conducting polymers. LÄS MER

  3. 3. Light-Induced Yellowing of High-Yield Pulps. The Effect of Acetylation

    Författare :Magnus Paulsson; Chalmers University of Technology; []
    Nyckelord :yellowing; mechanical properties; hydroxyl groups; phenolic groups; paper; high-yield pulps; chromophores; model compounds; acetylation; inhibition;

    Sammanfattning : This thesis is a contribution to the understanding of the mechanism of photoyellowing of high-yield pulps. It also gives some general information about the reactivity of different functional groups in lignin towards acetic anhydride. LÄS MER

  4. 4. Modification of lignin-rich paper for improvement of mechanical and optical properties

    Författare :Magnus Paulsson; Chalmers University of Technology; []
    Nyckelord :TMP; acetylation; photoyellowing; sodium borohyride; CTMP; stabilization; phenol groups; paper properties;

    Sammanfattning : .... LÄS MER

  5. 5. Storage of Hydrogen Peroxide Bleached Mechanical Pulp : Reduction in Reflectance over the Visible Spectrum

    Författare :Sofia Enberg; Per Engstrand; Magnus Paulsson; Mats Rundlöf; Patrik Axelsson; Øyvind Eriksen; Yonghao Ni; Mittuniversitetet; []

    Sammanfattning : The objective of this thesis is to determine possible causes of the darkening of hydrogen peroxide bleached mechanical pulp over the visible spectrum and their relative contributions. It focuses on both process conditions and the composition of the pulp and the dilution water, including additions or losses of material along the process line from the bleach tower to the paper machine. LÄS MER