Search for dissertations about: "steric forces"

Showing result 1 - 5 of 19 swedish dissertations containing the words steric forces.

  2. 1. On the interactions in cellulose systems : surface forces and adsorption

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

    Abstract : 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. READ MORE

  4. 2. A Novel Fiber Interaction Method for Simulation of Early Paper Forming

    Author : Gustav Kettil; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fiber suspension flow model; object-object interaction model; contact forces; lay down simulations; paper forming; immersed boundary methods; contact forces;

    Abstract : In the forming section of a paper machine, a fiber suspension is flowing down onto a forming fabric, and a paper structure is formed. By using computer simulations this process can be studied, attaining new knowledge helping to improve paper quality and machine efficiency. READ MORE

  5. 3. Modification of polymeric particles via surface grafting for 3D scaffold design

    Author : Robertus Wahyu Nayan Nugroho; Ann-Christine Albertsson; Orlando J. Rojas; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; surface grafting; PLA; PLLA; hydrophilic polymers; particles; geometry; steric stabilization; atomic force microscopy AFM ; polyelectrolyte multilayers; 3D scaffold; bone tissue engineering; surface degradation;

    Abstract : Surface modification techniques have played important roles in various aspects of modern technology. They have been employed to improve substrates by altering surface physicochemical properties. READ MORE

  6. 4. Scanning probe microscopy studies of interaction forces between particles: emphasis on magnetite, bentonite and silica

    Author : Illia Dobryden; Neil Thomson; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Experimentell fysik; Experimental Physics;

    Abstract : Scanning probe microscopy (SPM), such as the atomic force microscope (AFM), using colloidal probes is a highly suitable technique to probe single particle-particle interactions in aqueous solution. The interaction force between a colloidal probe on the AFM cantilever and sample surface is measured. READ MORE

  7. 5. Dynamic interactions of interfacial polymers

    Author : Mark Plunkett; KTH; []
    Keywords : surface chemistry dynamic polymer interactions QCM AFM MASIF surface forces adhesion friction;

    Abstract : The relationship between the amount and conformation of apolymer at the solid-liquid interface, and the resultinginteraction forces between two such surfaces has beeninvestigated. With a degree of control of the polymerconformation, by varying the temperature, solvent quality,polymer charge density etc, it has been possible to measure andinterpret the resulting changes in the surface interactions. READ MORE