Search for dissertations about: "poly-amide"

Found 4 swedish dissertations containing the word poly-amide.

  2. 1. New approaches to preparation of macroporous monoliths for use in liquid chromatography

    Author : Anh Mai Nguyen; Knut Irgum; Tatiana B. Tennikova; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; monolith; polycondensation; dissolution-precipitation; epoxy-amine; poly-amide; nylon; emulsion polymerization; characterization; protein separation; liquid chromatography; Analytical chemistry; Analytisk kemi; analytisk kemi; Analytical Chemistry;

    Abstract : High performance liquid chromatography (HPLC) is one of the major techniques in separat-ion sciences. Faster separation and higher efficiency are required to meet ever-growing demands. Despite numerous studies and achievements on improving mass transfer in particulate packings discontinuity seems to be the cornerstone drawback in their development. READ MORE

  4. 2. Free Volume and Mesopores in Polymer Nanocomposites

    Author : Petra Winberg; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemical technology and engineering; Kompositmaterial; Composite materials; Macromolecular chemistry; permeability ; membrane ; positron annihilation ; fumed silica ; clay ; mesopores ; polymer nanocomposites ; free volume ; Kemiteknik och kemisk teknologi; Makromolekylär kemi;

    Abstract : The free volume in polymers is coupled to several important physical properties, such as density, viscosity and gas diffusivity. The physical properties of polymers close to a solid surface have been shown to be significantly perturbed as compared to their bulk state. READ MORE

  5. 3. Tribology of polymer composites for elevated temperature applications

    Author : Jonna Lind; Åsa Kassman Rudolphi; Stefan Silverbåge; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tribology; polymer composite; friction; wear; Teknisk fysik med inriktning mot tribomaterial; Engineering Science with specialization in Tribo Materials;

    Abstract : Polymers as construction material are common in the industry. Although more recently the use of polymer composites in more demanding applications has increased, requiring more of them mechanically, tribologically and thermally. To enhance the properties various fillers are used, from common glass fibers to more advanced nanoparticles. READ MORE

  6. 4. Graphene Oxide Network Formation and Crosslinking in Polybenzoxazines and Poly[(R)-3-hydroxybutyrate]

    Author : Carlos Rodriguez Arza; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The search for improvement of the physical properties of two very dissimilar polymeric materials is the aim of this doctoral thesis. The high performance properties of polybenzoxazines are tackled via the preparation of novel amino-functional benzoxazine monomers, as well as by the addition of graphene oxide (GO) for the preparation of polybenzoxazine nanocomposites. READ MORE