Sökning: "hydroxyethyl cellulose"

Visar resultat 1 - 5 av 29 avhandlingar innehållade orden hydroxyethyl cellulose.

  1. 1. Foaming of Some Cellulose Derivatives - Initial Studies

    Författare :Kristina Karlsson; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rheological characterisation; Foaming; hydroxypropyl methylcellulose HPMC ; scale-up production; ethyl hydroxyethyl cellulose EHEC ; hot-mould baking; cellulose derivatives; extrusion;

    Sammanfattning : Fossil-based polymeric foams, based on polymers such as polystyrene and polyurethane, are important and widely employed materials due to their good mechanical properties relative their low density, the low price and the possibility for large-scale production. There are however a few disadvantages with these foamed products. LÄS MER

  2. 2. Characterization of cellulose pulps and the influence of their properties on the process and production of viscose and cellulose ethers

    Detta är en avhandling från Umeå : Umeå Universitet

    Författare :Peter Strunk; Umeå universitet.; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cellulose ether; dissolving pulp; ethyl hydroxyethyl cellulose; hardwood; multivariate data analysis; reactivity; softwood; sulfate; sulfite; viscose;

    Sammanfattning : Today’s market offers an ever-increasing range of cellulose pulps (derivative pulps) made fromvarious wood types through different delignification processes. Each pulp segment has its uniquecharacteristics, which makes it difficult for the producer of cellulose derivatives to choose the mostsuitable pulp for optimum processability and product quality. LÄS MER

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

    Detta är en avhandling från Monica Egermayer, Physical Chemistry 1, Center for Chemistry and Chemical Engineering, Lund University

    Författare :Monica Egermayer; Lunds universitet.; Lund University.; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; rheology; Physical chemistry; Fysikalisk kemi; inclusion complex; amylose; surfactant; ethyl hydroxyethyl cellulose; hydrophobically modified polymer; hydroxyethyl cellulose;

    Sammanfattning : Popular Abstract in Swedish Polymerer finns överallt i naturen, till exempel i form av stärkelse, cellulosa, DNA. Människan har också skapat syntetiska polymerer som bland annat används i plaster, färger, och kläder. Potatisstärkelse används bland annat i matlagning. En liten mängd stärkelse får en sås att tjockna. LÄS MER

  4. 4. Foaming of cellulose derivatives and hemicellulose-containing materials

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Kristina Karlsson; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; β-glucan; arabinoxylan; scale-up production; hydroxypropyl methylcellulose HPMC ; ethyl hydroxyethyl cellulose EHEC ; hot-mould foaming; extensional viscosity; extrusion; hemicellulose; rheological characterisation; Foaming; xylan; cellulose derivatives;

    Sammanfattning : Fossil-based polymeric foams are important materials due to their good mechanical properties relative their low density, the low price and the possibility for large-scale production. They are widely used in cushioning, absorbing and insulation applications. There are however a few disadvantages with these foamed products. LÄS MER

  5. 5. An Investigation of Thermogelling Aqueous Systems of Ethyl(HydroxyEthyl)Cellulose and Ionic Surfactants

    Detta är en avhandling från Department of Food Technology, Lund University

    Författare :Katarina Lindell; [1996]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polymer-polymer association; HS-DSC; SANS; solubilization; dexamethasone; timolol maleate; in vitro release; thermoreversible gelation; phase diagram; cloud point; Ethyl hydroxyethyl cellulose; ionic surfactants; Livsmedelsteknik; Food and drink technology;

    Sammanfattning : Aqueous solutions of a particular type of the nonionic cellulose derivative ethyl(hydroxyethyl)cellulose (EHEC) may form thermoreversible gels in the presence of ionic surfactants. Low-viscous solutions can be transformed to clear, stiff gels as the temperature is increased. LÄS MER