Search for dissertations about: "gel"

Showing result 16 - 20 of 737 swedish dissertations containing the word gel.

  2. 16. Dynamics of Disordered Materials in Confined Geometries

    Author : Christer Svanberg; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polymer film; glass transition; confinement; polymer gel; dynamics; dielectric spectroscopy; gel electrolytes; relaxation; photon correlation; cooperativity;

    Abstract : This thesis is concerned with effects of geometrical confinement on dynamics in disordered materials in the nanoscopic range. Of particular interest is the dynamics around the liquid to glass transition. Two systems have been investigated: thin polymer films and polymer gels. READ MORE

  4. 17. Molecular associations and transport properties of amphiphiles and gastrointestinal mucin in aqueous solution

    Author : Géraldine Lafitte; Fysikalisk kemi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysikalisk kemi; transport properties; diffusion NMR; Magnetic resonance imaging; Physical chemistry; hydrophobic association; electrostatic repulsion; gel; Mucin; Surfactant;

    Abstract : An effective uptake/absorption of drug formulations involve many processes; one being the transport of the active molecule through the mucus layer. The mucus layer is a complex mixture of biological molecules. Among them, mucin is the molecule that mainly provides the gel properties of the layer. READ MORE

  5. 18. Heterogeneities in polymer gels: Effects on swelling and mechanical properties

    Author : Mikael Larsson; Chalmers tekniska högskola; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Gel; Phase separation; Heterogeneities; Polyacrylic acid.; HPMC; Glass transition temperature; Microfibrillated cellulose; Filler; Elastomer;

    Abstract : Polymeric hydrogels is a class of scientifically interesting materials that are being extensively studied. They are found in numerous applications within; drug delivery, hygiene products, food industry, analytical chemistry, etc. In addition, polymeric hydrogels have promising future applications as; cell scaffolds, implants, sensors, etc. READ MORE

  6. 19. Association and Interactions in Protein-Surfactant Systems

    Author : Anna Stenstam; Fysikalisk kemi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; catanionic surfactant; SANS; NMR; gel; sodium alkylsulfate; Protein-surfactant interactions; lysozyme; LH2; Physical chemistry; Fysikalisk kemi;

    Abstract : Aggregation in protein-surfactant systems have been studied with the ambition of reaching a deeper understanding of the balance of the interaction forces involved. A pure system with maximized electrostatic interactions has been used. READ MORE

  7. 20. Prolonged Drug Release from Gels, using Catanionic Mixtures

    Author : Tobias Bramer; Katarina Edsman; Per Hansson; Stefan Ulvenlund; Uppsala universitet; []
    Keywords : Pharmaceutics; gel; catanionic; vesicle; micelle; controlled release; diffusion; surfactant; drug delivery; Galenisk farmaci;

    Abstract : The use of catanionic drug-surfactant mixtures was proven to be an efficient novel method of obtaining prolonged drug release from gels. It was shown that various commonly used drug compounds are able to form catanionic mixtures together with oppositely charged surfactants. READ MORE