Sökning: "Cationic surfactants"

Visar resultat 1 - 5 av 35 avhandlingar innehållade orden Cationic surfactants.

  1. 1. Cleavable Cationic Gemini Surfactants

    Författare :Ali Tehrani; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; chemical hydrolysis; esterquat; gemini; biodegradation; adsorption; cleavable; synthesis; betaine ester; surfactant; solubilization; shape and size of micelle;

    Sammanfattning : This research project concerns investigations of ester-containing cationic gemini surfactants (esterquat and betaine ester types). These dimeric surfactants are compared with their monomeric counterparts. LÄS MER

  3. 2. A physico-chemical investigation of cationic surfactants in solution

    Författare :Cecilia Groth; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; relaxation times; stopped-flow technique; gemini surfacant; micelle kinetics; Cationic surfacant; self-diffusion NMR; vesicles; permeability;

    Sammanfattning : .... LÄS MER

  4. 3. Ethyl(hydroxyethyl)cellulose and Some Model Uncharged Polymers: A Calorimetric Study of Their Interaction with Surfactants in Aqueous Solution

    Författare :Geng Wang; Biokemi och Strukturbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; calorimetry; differntial scanning; isothermal titration; enthalpy; electrolyte; micelles; self-association; thermal gelling; interaction; alkyltrimethylammonium halides; sodium dodecylsulfate; surfactants; polymers; ethyl hydroxylethyl cellulose; viscosity; phase behavior; self-diffusion NMR; Physics; Fysik; Chemistry; Kemi; Fysicumarkivet A:1997:Wang;

    Sammanfattning : The interactions between uncharged polymers, e.g. ethyl(hydroxylethyl)cellulose (EHEC) and some model polymers, and ionic surfactants in aqueous solution has been studied by using isothermal titration and differential scanning calorimetry. LÄS MER

  5. 4. Adsorption and Self-Assembly of Cationic Surfactants at Silica Surfaces

    Författare :Cecilia Ström; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; Fysikalisk kemi;

    Sammanfattning : The equilibrium self-assembly of cationic surfactants in bulk solution and at negatively-charged silica substrates is investigated experimentally and theoretically. The surfactants used are quaternary ammonium salts, both monovalent (DoTAB, TTAB, CTAB) and divalent (DoPPDAC). LÄS MER

  7. 5. Interactions between surfactants and starch : from starch granules to amylose solutions

    Författare :Isabel Mira; Per Claesson; James N. Bemiller; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; food science and technology; polymer chemistry; Surface and colloid chemistry; Yt- och kolloidkemi;

    Sammanfattning : Starch is a mixture of two polysaccharides, amylose (AM) and amylopectin, which occurs naturally in the form of microscopic granules that are abundantly found in tubers, roots, cereal grains and fruits. In order to bring out their functional properties as thickeners and texture enhancers, starch granules are often disrupted by heating in excess water. LÄS MER