Sökning: "fibre bridging"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden fibre bridging.

  1. 1. Characterisation of delamination properties in paper materials

    Författare :Anna Lundh; KTH; []
    Nyckelord :delamination; drying; fibre bridging; fibre bonding; fracture;

    Sammanfattning : .... LÄS MER

  3. 2. Adsorption kinetics of cationic polyacrylamides on cellulose fibres and its influence on fibre flocculation

    Författare :Daniel Solberg; KTH; []
    Nyckelord :Adsorption; bridging; cationic polymers; cellulose fibres; electrosteric stabilisation flocculation; ;

    Sammanfattning : The adsorption of cationic polyacrylamide (C-PAM) and silicananoparticles onto a model surface of silicon oxide wascompared with the adsorption of C-PAM to fibres and theirinfluence on flocculation of a fibre suspension. An increase inionic strength affects the polyelectrolyte adsorption indifferent ways for these two systems. LÄS MER

  4. 3. On the interactions in cellulose systems : surface forces and adsorption

    Författare :Monika Österberg; KTH; []
    Nyckelord :cellulose; hemicellulose; xylan; lignin; surface forces; adsorption; polyelectrolyte; SFA; AFM; ESCA; Langmuir-Blodgett films; chitosan; steric forces; bridging; adhesion;

    Sammanfattning : In this thesis the interactions in cellulose systems havebeen studied with emphasis on surface forces and adsorptionphenomenon. The study was limited to surfaces and polymers ofinterest for papermaking. LÄS MER

  5. 4. Fibre suspension flocculation under simulated forming conditions

    Författare :Huawei Yan; KTH; []
    Nyckelord :;

    Sammanfattning : A flow loop system for study of fibre flocculation insuspensions has been developed. The system is designed tosimulate the flow conditions in a paper machine headbox. It isequipped with a radial distributor feeding a step diffuser pipepackage, after which the flow is contracted in a 2-D nozzle. LÄS MER

  7. 5. Notch sensitivity and bridging laws in glass mat composites

    Författare :Johan Lindhagen; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Sammanfattning : The fracture behaviour of polymeric random glass mat reinforced composites was investigated. Such materials exhibit very large damage zones with fibre bridging. The damage zone sizes are often comparable with the specimen dimensions, which precludes the use of linear elastic frac-ture mechanics (LEFM). LÄS MER