Sökning: "Surface modification"

Visar resultat 11 - 15 av 419 avhandlingar innehållade orden Surface modification.

  1. 11. Nanocelluloses - surface modification and use in functional materials

    Författare :Michaela Salajková; Lars Berglund; Gunnar Westman; Anna Finne; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nanocellulose; surfactant; surface modification; papermaking process; quaternary ammonium salt;

    Sammanfattning : Cellulose nanocomposites offer interesting potential in terms of improved properties and new functionalities compared with microcomposites. Preparation from colloidal suspensions is promising, since high reinforcement content is possible and a wide range of constituents can be used. LÄS MER

  3. 12. Surface Modifications and Applications of Aqueous Silica Sols

    Författare :Peter Greenwood; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; applications; Surface modification; aqueous; silica sol; silane; colloidal silica; titania;

    Sammanfattning : Methods of modifying the surface of the particles of colloidal silica were developed and the effects of surface modification on the properties of colloidal silica were studied.Gamma-glycidoxypropyltrimethoxysilane (GPTMS) readily reacts with water to yield a hydrolysed silane that reacts readily with the silica surface. LÄS MER

  4. 13. Modification of Float Glass Surfaces by Ion Exchange

    Författare :Stefan Karlsson; Bo Jonson; Helmut Schaeffer; Linnéuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ion exchange; float glass; surface modification; surface colour; flexural strength; Glasteknologi; Glass Technology;

    Sammanfattning : Glass is a common material in each person’s life, e.g. drinking vessels, windows, displays, insulation and optical fibres. By modifying the glass surface it is possible to change the performance of the entire glass object, generally known as Surface Engineering. LÄS MER

  5. 14. Aspects of oral implant technology and osseointegration

    Författare :Rainde Naiara Rezende de Jesus; Malmö universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; biomaterials; oral implants; surface topography; surface roughness; surface energy; surface wettability; hydrophilicity; macrogeometry; implant body; thread design; surgical protocol; oversized drilling; osseointegration; bone-to-implant contact; bone density; primary implant stability; insertion torque; removal torque; removal energy; connection stiffness; osteoclasts; RAW264.7 cells; gene expression;

    Sammanfattning : Behandling med käkbensförankrade tandimplantat är en vanlig metod för att ersätta förlorade tänder hos helt och partiellt tandlösa patienter. Trots att implantatbehandling uppvisar en långsiktigt hög lyckande- och överlevnadsfrekvens (90–95% efter 10 år) så förekommer implantatförluster och marginal benförlust kring implantaten under det första året efter insättning och/eller belastning, vilket kan försämra det estetiska resultatet. LÄS MER

  7. 15. Wood Nanocellulose Materials and Effects from Surface Modification of Nanoparticles

    Författare :Michaela Salajkova; Lars Berglund; Kritiina Oksman; KTH; []
    Nyckelord :Nanocellulose; nanoc omposite; dispersion; surface modification; surfa ctant; poly methyl methacrylate ; poly vinyl acetate ; carbon nanotubes; electrospinning; lubricant - infused surfaces;

    Sammanfattning : Nanocellulose is an interesting natural material thatis gaining interest in the field of materials science, particularly nanocomposites. Depending on the disintegration route, nanocellulose can be isolated either in the form of long and flexible fibres (nanofibrillated cellulose, NFC), or stiff, rod-like crystals (cellulose nanocrystals, CNC). LÄS MER