Sökning: "MICELLE TRANSITION"

Hittade 5 avhandlingar innehållade orden MICELLE TRANSITION.

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

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

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

    Sammanfattning : 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. LÄS MER

  2. 2. Sterically stabilised liposomes and related lipid aggregates Fundamental studies on aggragate structure and stability

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Markus Johnsson; Uppsala universitet.; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; liposome; steric stabilisation; colloidal stability; cryo-TEM; drug delivery; Fysik; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : Various aspects of and approaches towards the steric stabilisation of liposomes have been investigated, mainly by use of fluorescence techniques and cryo-transmission electron microscopy (cryo-TEM). It is shown that PEG(2000)-lipids can be incorporated in the liposome membrane up to a critical concentration of 8-10 mol% without any observable structural perturbations. LÄS MER

  3. 3. Interfacial properties of some carbohydrate-based surfactants and polymers

    Detta är en avhandling från Stockholm : Kemi

    Författare :Atte J. Kampulainen; KTH.; [2004]
    Nyckelord :Pure science;

    Sammanfattning : The aim of this thesis is primarily to investigate theadsorption of surfactants, in particular to the airwaterinterface. The effects of the head-group and the hydrocarbonchain are of special interest. LÄS MER

  4. 4. Synthesis of nanostructured and hierarchical materials for bio-applications

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Fei Ye; KTH.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fe3O4; mSiO2; core-shell; MRI; multifunctional; PNIPAAm; LCST; gold; nanorod; nitric acid; AR; MDDC; biocompatibility; immunomodulation; TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Materials chemistry; TEKNIKVETENSKAP Kemiteknik Kemisk process- och produktionsteknik Materialkemi;

    Sammanfattning : In recent years, nanostructured materials incorporated with inorganic particles and polymers have attracted attention for simultaneous multifunctional biomedical applications. This thesis summarized three works, which are preparation of mesoporous silica coated superparamagnetic iron oxide (Fe3O4@mSiO2) nanoparticles (NPs) as magnetic resonance imaging T2 contrast agents, polymer grafted Fe3O4@mSiO2 NPs response to temperature change, synthesis and biocompatibility evaluation of high aspect ratio (AR) gold nanorods. LÄS MER

  5. 5. Physico-Chemical Investigations of Bilayer Discs and Related Lipid Structures Formed in Liposomal Systems Intended for Triggered Release

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Maria Sandström; Uppsala universitet.; [2007]
    Nyckelord :Physical chemistry; liposome; triggered release; pH-sensitive liposomes; temperature-sensitive liposomes; drug partitioning; cryo-TEM; discs; Fysikalisk kemi;

    Sammanfattning : This thesis describes results from fundamental studies of liposomes intended for drug delivery and pH or temperature triggered release. In addition, the effect of lipid composition on bilayer disc formation and a potential application of the bilayer discs were investigated. LÄS MER