Search for dissertations about: "hydroxyethyl-cellulose"

Showing result 1 - 5 of 28 swedish dissertations containing the word hydroxyethyl-cellulose.

  2. 1. Complexation between hydrophobically modified polymers and amylose. Gelation and competition by surfactants

    Author : Monica Egermayer; Kemiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; rheology; Physical chemistry; Fysikalisk kemi; inclusion complex; amylose; surfactant; ethyl hydroxyethyl cellulose; hydrophobically modified polymer; hydroxyethyl cellulose;

    Abstract : Aqueous mixtures of hydrophobically modified polymers (HMP) with amylose have been investigated by rheology and 1H NMR. Amylose can cross-link HMP chains by forming single-helical inclusion complexes with the hydrophobic side chains of the HMP, leading to thermoreversible, elastic, and thixotropic gels at ambient temperatures. READ MORE

  4. 2. Microstructure and enzymatic stability of ethyl-o-(hydroxyethyl)- cellulose

    Author : Margareta Arwidsson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; substitution pattern; ethyl-o- hyfroxyethyl -cellolose; enzymatic degradation; 13< sup>C-NMR analysis;

    Abstract : .... READ MORE

  5. 3. Associative Multicomponent Polymers in Bulk and at Interfaces

    Author : Fredrik Joabsson; Fysikalisk kemi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; polymer adsorption; polymer self-diffusion; polymer-surfactant interactions; phase behaviour; ethyl hydroxyethyl cellulose; hydrophobically modified polymers; capillary-induced phase separation; Physical chemistry; Fysikalisk kemi;

    Abstract : The solution and interfacial properties of an associative water-soluble cellulose derivative, ethyl(hydroxyethyl)cellulose (EHEC) have been investigated. Main themes have been to study the effect of hydrophobic modification of the polymer (HM-EHEC) and the interactions with surfactants, both in bulk and at interfaces. READ MORE

  6. 4. Solution properties of a hydrophobically modified polymer

    Author : Krister Thuresson; Fysikalisk kemi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; sodium dodecylsulfate; surfactants; fluorescence; light scattering; NMR; rheology; cloud point; phase behaviour; polyelectrolytes; ethyl hydroxyethyl cellulose; hydrophobically modified; water soluble polymers; aggregation number; association; Physical chemistry; Fysikalisk kemi;

    Abstract : The influence of hydrophobic modification on solution properties of water-soluble polymers in the semi-dilute regime have been studied. The nonionic ethyl(hydroxyethyl)cellulose (EHEC) and its hydrophobically modified analogue (HM-EHEC) are used as model substances. READ MORE

  7. 5. Characterisation of the Substituent Distribution in Starch and Cellulose Derivatives

    Author : Sara Richardson; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Analytisk kemi; Cationic amylopectin; Hydroxypropyl amylopectin; Ethyl hydroxyethyl cellulose; Substituent distribution; Enzymic degradation; HPAEC-PAD; MALDI-TOF-MS; ESI-MS; Kemi; Analytical chemistry;

    Abstract : Starch and cellulose can be chemically modified to produce derivatives with specific properties. Knowledge of correlations between the modification reaction, substituent distribution and properties is important in order to design modification processes so as to produce derivatives with the desired properties. READ MORE