Sökning: "Nonionic"

Visar resultat 21 - 25 av 64 avhandlingar innehållade ordet Nonionic.

1. 21. Scattering Studies of Macromolecules in Solution

   Författare :David Löf; Fysikalisk kemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Bacteriophage lambda; Dynamic Light Scattering; Time-Resolved; Mixed Micelles; Nonionic Surfactant; Triblock Copolymer; Calorimetry; SLS; Rheology; DLS; SAXS;

   Sammanfattning : The sphere-to-rod transition of nonionic micelles of the PEO-PPO-PEO triblock copolymer P123 and the surfactant C12EO6 was studied using dynamic and static light scattering, small angel X-ray scattering, rheology and calorimetry. The transition temperature was dependent of the C12EO6/P123 molar ratio, which means that a larger content of C12EO6 yields a higher transition temperature. LÄS MER

3. 22. Ellipsometry studies of liquid interfaces: New methodology and applications

   Författare :Jan-Willem Benjamins; Fysikalisk kemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Surface and boundary layery chemistry; Ytkemi; gränsskikt; phospholipids; lactoglobulin; air water; oil water; block copolymers; nonionic surfactants; Brewster angle microscopy; Ellipsometry; adsorption;

   Sammanfattning : Adsorption of several surface active agents, such as nonionics, diblock copolymers, triblock copolymers, proteins and phospholipids at the oil/water and air/water has been studied. In order to be able to do this, a new ellipsometry setup, which utilizes light guides, was developed and tested. LÄS MER

4. 23. Alkylglycoside Surfactants - Self-Assembly, Solid-State Properties and Interactions with Hydrophobic Molecules

   Författare :Caroline Ericsson; Fysikalisk kemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysikalisk kemi; Physical chemistry; peptide stabilisation; solubilisation; micelle morphology; solid-state behaviour; alkylglycosides; nonionic surfactants;

   Sammanfattning : A thorough physical-chemical characterisation of alkylglycosides has been performed. The effects of temperature, salt, concentration and deuterium exchange on the self-aggregation of n-nonyl-b-D-glucoside (b-C9G1) and n-tetradecyl-b-D-maltoside (b-C14G2) have been studied in dilute solutions by static and dynamic light scattering, neutron scattering, rheology, capillary viscometry and tensiometry. LÄS MER

5. 24. Tall oil products as raw material for surfactant synthesis

   Författare :Björn E.O. Hedman; KTH; []
   Nyckelord :Tall oil fatty acid; Tall oil rosin; Esterification; Catalytic epoxidation; Nonionic surfactant; Cmc; Cloud point;

   Sammanfattning : .... LÄS MER

7. 25. 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