Sökning: "Gelation of cellulose"

Visar resultat 1 - 5 av 12 avhandlingar innehållade orden Gelation of cellulose.

  1. 1. Physico-Chemical Properties of Plant Polysaccharides Investigated with NMR Techniques

    Detta är en avhandling från Chalmers University of Technology

    Författare :Åsa Östlund; Chalmers tekniska högskola.; Chalmers University of Technology.; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Spektroskopi; Spectroscopy; Yt- och kolloidkemi; Surface and colloid chemistry; Cellulose solution; Chemical shift imaging; Cryoporometry; Dissolution of cellulose; Fiber hornification; 19F NMR; Gelation of cellulose; 1H NMR; Molecular weight; NMR diffusometry; Pore size distribution; Pulsed field gradient NMR; Self-diffusion; TBAF DMSO; Xylan;

    Sammanfattning : In the lead of developing new biomaterials from plant sources it is of importance to be able to control and vary the properties, such as flexibility, strength, and hygroscopicity of the final material. These properties are highly directed by the interactions between constituents on a molecular level. LÄS MER

  2. 2. Phase Separation and Gelation of Biopolymers in Confined Geometries

    Detta är en avhandling från Chalmers University of Technology

    Författare :Sophia Wassén; Chalmers tekniska högskola.; Chalmers University of Technology.; Chalmers tekniska högskola.; Chalmers University of Technology.; [2012]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; confinement; phase separation; gelation; biopolymer mixture; microstructure; structure evolution; spinodal decomposition; gelatin–maltodextrin; whey protein isolate–gellan gum; confocal laser scanning microscopy; image analysis.;

    Sammanfattning : Many biopolymer mixtures exhibit segregative phase separation that generates regions enriched in one polymer and depleted in the other. Today, much is known of how phase separating biopolymer systems behaves in bulk phase, and the final morphology can be controlled and tailored with high precision. LÄS MER

  3. 3. Structural design and properties of hydrogel biomaterials

    Detta är en avhandling från Chalmers University of Technology

    Författare :Mikael Larsson; Chalmers tekniska högskola.; Chalmers University of Technology.; Chalmers tekniska högskola.; Chalmers University of Technology.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Galenisk farmaci; Pharmaceutics; Fysikalisk kemi; Physical chemistry; Teknisk materialvetenskap; Materials science; Biomaterials; Chitosan; Drug release; Hydrogels; Mechanical properties; Microfibrillated cellulose; Polyacrylic acid; Swelling;

    Sammanfattning : Today a range of materials are used in medical applications; such materials are collectively denoted as biomaterials. A special class of biomaterials currently given much scientific interest is hydrogels. In particular a contemporary research topic is to create multicomponent materials in which synergetic effects are achieved. LÄS MER

  4. 4. Cellulose nanofibril materials with controlled structure the influence of colloidal interactions

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Andreas Fall; KTH.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Colloidal stability; cellulose nanofibrils; nanofibers; nanostructured materials; biocomposite; DLVO; gel;

    Sammanfattning : Nanoparticles are very interesting components. Due to their very large specific surface area they possess properties in between molecules and macroscopic materials. In addition, a material built up of hierarchically assembled nanoparticles could obtain unique properties, not possessed by the nanoparticles themself. LÄS MER

  5. 5. 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