Search for dissertations about: "polyelectrolyte gels"

Showing result 1 - 5 of 8 swedish dissertations containing the words polyelectrolyte gels.

  1. 1. Polymer Gels: Modeling the Swelling Behavior

    University dissertation from Physical Chemistry 1, Lund University

    Author : Stefanie Schneider; Lunds universitet.; Lund University.; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysikalisk kemi; Physical chemistry; Polymerteknik; biopolymers; Polymer technology; binding isotherms; polyelectrolyte-surfactant interactions; discontinuous volume transition; gel swelling; Monte Carlo simulation; polyelectrolyte gels;

    Abstract : Popular Abstract in Swedish Som man kan se av titeln handlar den här avhandlingen om polyelektrolytgeler. Vad är nu polyelektrolyter och vad är geler? Och vad är de bra till? Polymerer Polymerer är långa molekylkedjor, som förekommer i naturen men som också kan vara gjorda av människan. READ MORE

  2. 2. Interaction between Crosslinked Polyelectrolyte Gels and Oppositely Charged Surfactants

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Peter Nilsson; Uppsala universitet.; [2007]
    Keywords : Pharmaceutical chemistry; gel; polyelectrolyte; surfactant; deswelling; kinetics; phase separation; volume transition; ion-exchange; diffusion; liquid crystal; SAXS; cubic Pm3n; Farmaceutisk kemi;

    Abstract : The interactions between anionic, crosslinked gels and cationic surfactants have been investigated. When exposed to oppositely charged surfactant, the gel collapses into a dense complex of polyion and micelles. READ MORE

  3. 3. Swelling and Mechanical Properties of Polymer Gels: Salt, Macroion and Network Topology Effects

    University dissertation from Physical Chemistry 1, Lund University

    Author : Samuel Edgecombe; Lunds universitet.; Lund University.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; volume decrease upon uniaxial extension; interpenetrating networks; loose-end effects; polydispersity effects; macroion deswelling; salt deswelling; polymer gels; polyelectrolyte gels; Physical chemistry; Fysikalisk kemi;

    Abstract : Popular Abstract in Swedish Ordet polymer användes första gången av Berzelius år 1830 och kommer ursprungligen från grekiskans polymeres, vilket betyder av flera delar ("poly"=flera och "meros"=del). En polymer är en lång molekyl gjord av flera upprepande enheter. Polymerer finns i naturen (t. ex. READ MORE

  4. 4. Phase Phenomena in Polymer Networks Empirical Studies on the Influence of Hydrophobicity, Charge Density and Crosslinks on Macroion-Induced Phase Transitions in Polyelectrolyte Gels

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Martin Andersson; Uppsala universitet.; [2011]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Gel; microgel; microsphere; polystyrenesulfonate; polyacrylate; polyacrylicacid; DoTAB; DoTAC; CTAB; CTAC; network; polyelectrolyte; complex salt; self assembly; phase behaviour; hysteresis; thermodynamic; core-shell; lysozyme; cytochrome c; microscopy; micromanipulator; elastomer; elastic; protein; surfactant; phase behaviour; sorting; PHARMACY; FARMACI; NATURAL SCIENCES Chemistry Physical chemistry; NATURVETENSKAP Kemi Fysikalisk kemi;

    Abstract : The thesis concerns polyelectrolyte gels in contact with oppositely charged proteins and surfactant micelles, and includes of four papers (I-IV). In paper I confocal Raman spectroscopy was introduced as a method to trace micelles and investigate the structure of gel-surfactant complexes, in phase separated gel spheres. READ MORE

  5. 5. On the phase behaviour of hydrogels A theory of macroion-induced core/shell equilibrium

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Jonas Gernandt; Uppsala universitet.; [2013]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; polymer; polyelectrolyte; surfactant; thermodynamics; elasticity; Pharmaceutical Science; Farmaceutisk vetenskap;

    Abstract : Colloidal macroions are known to interact very strongly with oppositely charged polyionic hydrogels. Sometimes this results in a non-uniform distribution of the macroions within the gel, a phenomenon that is not fully understood. READ MORE