Search for dissertations about: "nonionic surfactants"

Showing result 1 - 5 of 41 swedish dissertations containing the words nonionic surfactants.

  1. 1. Nonionic surfactants : A multivariate study

    Author : Lise-Lott Uppgård; Michael Sjöström; Svante Wold; Jiri Damborsky; Umeå universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; AEO; APG; aquatic toxicity; cellulose reactivity; Fock; MLR; multivariate data analysis; nonionic surfactant; PCA; physicochemical properties; PLS; QSAR; surface activity; viscose; Chemistry; Kemi;

    Abstract : In this thesis technical nonionic surfactants are studied using multivariate techniques. The surfactants studied were alkyl ethoxylates (AEOs) and alkyl polyglucosides (APGs). The aquatic toxicity of the surfactants towards two organisms, a shrimp and a rotifer, was examined. The specified effect was lethality, LC50, as indicated by immobilisation. READ MORE

  2. 2. Nonionic surfactants from kraft lignin

    Author : Harald Brelid; Chalmers University of Technology; []
    Keywords : modification; fractionation; depressant; epoxide; kraft lignin; nonionic surfractant; dispersant; adsorption; kaolin; talc;

    Abstract : .... READ MORE

  3. 3. Investigation of adsorption at a mercury electrode with derivative chronopotentiometry : analysis of nonionic surfactants

    Author : Per Holmqvist; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE

  4. 4. Adsorption of polyhydroxyl based surfactants

    Author : Maria Matsson; Per Claesson; Robert Meszaros; KTH; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; surface chemistry; adsorption; surfactant; nonionic; alkyl glucoside APG ; ellipsometry; kinetics; alkyl amine oxide DDAO ; alkyl ammonium bromide DTAB ; solid liquid interface; synergism; coadsorption.;

    Abstract : Adsorption on solid surfaces from solution is a fundamental property of a surfactant. It might even be the most important aspect of surfactant behavior, since it influences many applications, such as cleaning, detergency, dispersion, separation, flotation, and lubrication. READ MORE

  5. 5. Surfactants at non-polar surfaces

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

    Abstract : 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. READ MORE