Sökning: "Sugar surfactants"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden Sugar surfactants.

  1. 1. Synthesis of Polyhydroxylated Surfactants : Comparison of Surfactant Stereoisomers and Investigation of Haemolytic Activity

    Författare :Kristina Neimert-Andersson; Peter Somfai; Krister Holmberg; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Polyhydroxy surfactants; Sugar surfactants; Dihydroxylation; Metathesis; Langmuir monolayers; Chiral discrimination; Haemolysis; Organic chemistry; Organisk kemi;

    Sammanfattning : I den här avhandlingen har vi studerat hur man kan göra nya tensider. En tensid är en speciell molekyl som har förmågan att lösa sig i både vatten och olja. Man kan göra följande experiment hemma: Fyll en glasburk till hälften med vatten och tillsätt en droppe matolja. LÄS MER

  3. 2. Synthesis of Novel Polyhydroxyl Surfactants. Influence of the Relative Stereochemistry on Surfactant Properties

    Författare :Kristina Neimert-Andersson; KTH; []
    Nyckelord :Polyhydroxyl surfactants; Sugar surfactants; Stereoselective; Synthesis; Dihydroxylation; Langmuir monolayers; Chiral discrimination;

    Sammanfattning : This thesis deals with the synthesis and characterization ofnovel polyhydroxyl surfactants. The first part describes thesynthesis of a number of stereoisomers of a polyhydroxylsurfactant, and the second part concerns surface chemicalcharacterization. LÄS MER

  4. 3. Surfactants at non-polar surfaces

    Författare :Marcus Persson; KTH; []
    Nyckelord :nonionic surfactants; SDS; surface tension; wetting; surface force; disjoining pressure isotherm; adhesion;

    Sammanfattning : The aim of this thesis work was to investigate theadsorption of surfactants to different nonpolar interfaces.Particularly, the effects of the polar group and the nature ofthe hydrophobic interface were elucidated. The interfacialbehavior of the liquid-vapor interface was investigated bymeans of surface tension measurements. LÄS MER

  5. 4. Tailoring the self-assembly, interfacial properties and rheological behaviour of sugar-based surfactants

    Författare :Johan Larsson; NanoLund: Centre for Nanoscience; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sugar-based surfactants; Self-assembly; Scattering; Rheology; Adsorption; Sustainable materials;

    Sammanfattning : Surfactants are important ingredients in many formulated products used in everyday life. Many of these surfactants originates from fossil-based materials and degrades slowly in aquatic systems. LÄS MER

  7. 5. Structure-Property Relationships of Surfactants at Interfaces and Polyelectrolyte-Surfactant Aggregates

    Författare :Mikael Kjellin; KTH; []
    Nyckelord :nonionic surfactant; sugar surfactant; poly ethylene oxide ; amide; ester; polyelectrolyte; SDS; hydrophobic surface; glass surface; mica; adsorption; aggregation; micelle size; surface forces; wetting; dynamic surface tension; NMR; TRFQ; SANS; SAXS; ;

    Sammanfattning : The first part of this thesis is concerned with thestructure-property relationships in nonionic surfactantsystems. The main aim was to investigate how the surfactantstructure influences the adsorption at interfaces andinteractions between surfactant coated interfaces. LÄS MER