Sökning: "Nonionic Surfactant"

Visar resultat 1 - 5 av 51 avhandlingar innehållade orden Nonionic Surfactant.

  1. 1. Nonionic surfactants A multivariate study

    Detta är en avhandling från Umrå : Umeå University, Department of Chemistry, Organic Chemistry

    Författare :Lise-Lott Uppgård; Umeå universitet.; [2002]
    Nyckelord :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; MEDICINE Chemistry; MEDICIN Kemi;

    Sammanfattning : 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. LÄS MER

  2. 2. Structural Changes in Nonionic Surfactant Systems

    Detta är en avhandling från Lund University (Media-Tryck)

    Författare :Sanja Bulut; Lunds universitet.; Lund University.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Vesicles; Nonionic Surfactant; Wormlike Micelles; Lamellar Phase; NMR; MRI; SLS; DLS; cryo-fracture-TEM; centrifugation; cryo-TEM;

    Sammanfattning : In this thesis we have studied structural changes of a nonionic surfactant self-assembly, as governed by changes in temperature and concentration. The techniques used in experimental investigations were dynamic and static light scattering, nuclear magnetic resonance and cryo-transmission electron microscopy (using a novel specimen preparation protocol). LÄS MER

  3. 3. Wetting and Capillary Flow of Surfactant Solutions and Inks

    Detta är en avhandling från Britt Nyström, YKI Ytkemiska Institutet AB, Box 5607, SE-114 86 Stockholm, Sweden, britt.nystrom@surfchem.kth.se

    Författare :Maria von Bahr; Lunds universitet.; Lund University.; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; Fysikalisk kemi; AKD; ink-jet printing; paper; penetration; absorption; adsorption; hydrophobicity; nonionic; surfactant; spreading; dynamic wetting;

    Sammanfattning : Popular Abstract in Swedish Ytaktiva ämnen (tensider) har många olika användningsområden, bl.a. är de en viktig beståndsdel i tvättmedel, hygienprodukter och en del läkemedel och livsmedel. Tensider används av en mängd olika orsaker, t. LÄS MER

  4. 4. Adsorption of polyhydroxyl based surfactants

    Detta är en avhandling från Stockholm : KTH

    Författare :Maria Matsson; KTH.; [2005]
    Nyckelord :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.;

    Sammanfattning : 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. LÄS MER

  5. 5. Adsorption at the Solid-Liquid Interface: An Atomic Force Microscopy Study

    Detta är en avhandling från YKI, Institute for Surface Chemistry AB, Box 5607, 114 86 Stockholm

    Författare :Lachlan M Grant; Lunds universitet.; Lund University.; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; hydrophobicity.; self-assembly; aggregate geometry; atomic force microscopy; nonionic; adsorption; surfactant; Fysikalisk kemi; Chemistry; Kemi;

    Sammanfattning : The aim of the work presented in this thesis was to investigate nature of adsorption of amphiphiles to the solid–liquid interface. The surface aggregate structures of the zwitterionic surfactant dodecyldimethylammoniopropanesulfonate, (DDAPS) and a series of nonionic polyoxyethlylene glycol alkyl ethers (C10E5, C12E5, C12E8, C10E6, C14E6 and C16E6) have been determined by Atomic Force Microscopy on solids of different hydrophobicity. LÄS MER