Search for dissertations about: "gelation"

Showing result 21 - 25 of 67 swedish dissertations containing the word gelation.

  2. 21. Nuclear Magnetic Resonance Methods to Study Soft Matter Dynamics and Microstructure

    Author : Diana Bernin; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Soft matter is of great importance for food, hygiene and pharmaceutical products. Gels are an example of soft matter and are found in e.g. diapers, that are able to take up large amounts of liquids. READ MORE

  4. 22. Structure and Dynamics of Silica Dispersions and Gels

    Author : Jonas Nordström; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aging; Photon correlation spectroscopy; sodium silicate; lithium electrolytes; water glass; fumed silica; sol-gel transition;

    Abstract : This thesis deal with the sol-gel transition of two quite different systems, both based on silica. The overall aim is to understand what interactions lead to this sol-gel transition and how the structure and dynamics change as a result of this.The first project concern the gelation of water glass, also known as alkaline sodium silicate solutions. READ MORE

  5. 23. Cellulose nanofibril materials with controlled structure : the influence of colloidal interactions

    Author : Andreas Fall; Lars Wågberg; Anna Finne Wistrand; Paul Gatenholm; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Colloidal stability; cellulose nanofibrils; nanofibers; nanostructured materials; biocomposite; DLVO; gel;

    Abstract : Nanoparticles are very interesting components. Due to their very large specific surface area they possess properties in between molecules and macroscopic materials. In addition, a material built up of hierarchically assembled nanoparticles could obtain unique properties, not possessed by the nanoparticles themself. READ MORE

  6. 24. Studies on fibrin gel structure

    Author : Kamaran T Fatah; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Fibrinogen; fibrin gel structure; plasma; thrombin; fibrinolysis; fibrin gel; zinc ion; plasminogen; crosslinking; acetylsalicylic acid; atherosclerosis; coronary heart disease;

    Abstract : Fibrin gel formation is the final result of interaction between multiple plasma proteins; as a result of activation, fibrinogen is converted to fibrin and crosslinking of fibrin occurs by activated factor XIII, which stabilises the formed clot. Fibrin gel networks were studied in purified fibrinogen systems and in plasma samples from patients with cardiovascular complications and healthy individuals, using light-scattering, turbidity, liquid permeation and confocal 3D microscopy techniques. READ MORE

  7. 25. Superabsorbent Polymers from the Cell Wall of Zygomycetes Fungi

    Author : Akram Zamani; Högskolan i Borås; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; chitosan; cell wall; chitin; polyphosphates; dilute sulfuric acid; zygomycetes fungi;

    Abstract : The present thesis presents new renewable, antimicrobial and biodegradable superabsorbent polymers (SAPs), produced from the cell wall of zygomycetes fungi. The cell wall was characterized and chitosan, being one of the most important ingredients, was extracted, purified, and converted to SAP for use in disposable personal care products designed for absorption of different body fluids. READ MORE