Sökning: "Surface and colloid chemistry"

Visar resultat 16 - 20 av 45 avhandlingar innehållade orden Surface and colloid chemistry.

  1. 16. Pro-inflammatory characteristics af nano-porous alumina : Effect o9f surface topography

    Författare :Natalia Ferraz; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Surface and colloid chemistry; Yt- och kolloidkemi;

    Sammanfattning : .... LÄS MER

  3. 17. Polyelectrolytes : Bottle-Brush Architectures and Association with Surfactants

    Författare :Ali Naderi; Per M. Claesson; Orlando Rojas; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Polyelectrolyte; Surfactant; Bottle-Brush Polyelectrolyte; Comb Polyelectrolyte; Non-Equilibrium State; Polymer Architecture; Adsorption; Desorption; Association; Excluded Volume; Light Scattering; SFA; AFM; QCM-D; Turbidimeter; Mica; Silica; Surface Forces; Surface and colloid chemistry; Yt- och kolloidkemi;

    Sammanfattning : This thesis has the dual purpose of raising awareness of the importance of the mixing protocol on the end products of polyelectrolyte-oppositely charged surfactant systems, and to contribute to a better understanding of the properties of bottle-brush polyelectrolytes when adsorbed onto interfaces. In the first part of this thesis work, the effects of the mixing protocol and the mixing procedure on formed polyelectrolyte-oppositely charged surfactant aggregates were investigated. LÄS MER

  4. 18. On the Internal Sizing Mechanisms of Paper with AKD and ASA Related to Surface Chemistry, Wettability and Friction

    Författare :Rauni Seppänen; Mark Rutland; John Roberts; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Surface and colloid chemistry; Yt- och kolloidkemi;

    Sammanfattning : Paper and board are hydrophobized (sized) to control the spreading and absorption of waterbased inks and retard the absorption and edge penetration of liquid packaging by aqueous liquids. Alkenyl ketene dimers (AKD) and alkenyl succinic anhydride (ASA) are synthetic sizing agents that are generally used under neutral or slightly alkaline papermaking conditions. LÄS MER

  5. 19. Lignin nanoparticles for photonic crystals and photothermal films

    Författare :Jinrong Liu; Mika H. Sipponen; Maurice Collins; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; lignin; colloid chemistry; films; coatings; nanocomposites; materialkemi; Materials Chemistry;

    Sammanfattning : The development of sustainable materials from biobased resources is essential due to environmental concerns posed by fossil-based materials. Lignin is a chemically complex biopolymer that exists in woody tissues of vascular plants. Lignin has many useful properties such as antioxidant activity, thermal stability, UV-absorbance, rigidity and so on. LÄS MER

  7. 20. Self assembly of surfactants and polyelectrolytes in solution and at interfaces

    Författare :Luis Alejandro Bastardo Zambrano; Per Claesson; Jan Skov Pedersen; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Surfactant; polyelectrolyte; small–angle neutron scattering; static light scattering; dynamic light scattering; polyelectrolyte–surfactant association; protein; Surface and colloid chemistry; Yt- och kolloidkemi;

    Sammanfattning : This thesis focuses on the study of the interactions between polyelectrolytes and surfactants in aqueous solutions and at interfaces, as well as on the structural changes these molecules undergo due to that interaction. Small–angle neutron scattering, dynamic, and static light scattering were the main techniques used to investigate the interactions in bulk. LÄS MER