Sökning: "Poly vinyl alcohol"

Visar resultat 1 - 5 av 21 avhandlingar innehållade orden Poly vinyl alcohol.

  1. 1. Hydrogels of Poly(vinyl alcohol) and Nanocellulose for Ophthalmic Applications Synthesis, Characterization, Biocompatibility and Drug Delivery Studies

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Gopi Krishna Tummala; Albert Mihranyan; Natalia Ferraz; Cecilia Persson; Jonas Lindh; Che Connon; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nanocellulose; poly vinyl alcohol ; hydrogel; cornea regeneration; therapeutic lens; Engineering Science with specialization in Nanotechnology and Functional Materials; Teknisk fysik med inriktning mot nanoteknologi och funktionella material;

    Sammanfattning : Hydrogels are commonly used materials in ophthalmic care as contact lenses, bandage lenses, corneal implants, and cornea regeneration scaffolds. Hydrogels can be produced by physical, chemical, or radiation crosslinking of hydrophilic polymers. LÄS MER

  2. 2. Diffusion in Poly(vinyl alcohol) and Polyethylene as Determined by Computational Simulations and Modeling

    Detta är en avhandling från Institutionen för polymerteknologi

    Författare :Gunnar Karlsson; [2002]
    Nyckelord :Molecular dynamics; simulation; modeling; polymer; poly vinyl alcohol ; polyethylene; water; oxygen; limonene; solute; diffusion; transport properties;

    Sammanfattning : Poly(vinyl alcohol) and polyethylene polymer systems werebuilt in order to study their transport properties (diffusion).First a verification of the AMBER force field was conducted fora poly(vinyl alcohol) system built from a chain with 145repeating units. NPT-molecular dynamics simulations attemperatures between 400 and 527 K were performed. LÄS MER

  3. 3. Transport properties of poly(vinyl alcohol) determined by molecular dynamics simulation

    Detta är en avhandling från Institutionen för polymerteknologi

    Författare :Gunnar Karlsson; [2000]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  4. 4. Poly(vinyl alcohol)-coated papers : effects of surface characteristics of the substrate

    Detta är en avhandling från Institutionen för polymerteknologi

    Författare :Thomas Schuman; [2002]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  5. 5. Effects of plasticizing and crosslinking on the mechanical and barrier properties of coatings based on blends of starch and poly(vinyl alcohol)

    Detta är en avhandling från Institutionen för polymerteknologi

    Författare :Asif Javed; Lars Järnström; Henrik Ullsten; Peter Rättö; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Citric acid; Glycerol; Polyethylene glycol; Barrier properties; Starch; Mechanical properties; Polyvinyl alcohol; Adhesion; Cross linking; Extrusion coating; Chemical Engineering; Kemiteknik;

    Sammanfattning : In the last decades, intensive research has been carried out in order to replace oil-based polymers with bio-based polymers due to growing environmental concerns. So far, most of the barrier materials used in food packaging are petroleum-based materials. LÄS MER