Sökning: "core crystallinity"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden core crystallinity.

  1. 1. From Macromolecular Design to Supramolecular Self-assembly

    Författare :Lidija Glavas; Ann-Christine Albertsson; Karin Odelius; Matthew Becker; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Self-assembly; micelles; core crystallinity; cyclic polypeptides; electroactivity; redox-responsiveness; triggered dissociation; loading; release; N-carboxyanhydride polymerization; polyesters; poly ε-decalactone ; Självorganisation; miceller; kärnkristallinitet; cykliska polypeptider; elektroaktivitet; tidsberoende dissociation; inkapsling; frisläppning; N-karboxyanhydrid polymerisation; polyestrar; poly ε-dekalakton ; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Advancements in drug delivery have enabled a wider array of prevention, control and treatment of diseases such as cancer. Drug delivery systems have the possibility of encapsulating drugs with low solubility, delivering them to specific locations in the body as well as obtaining a controlled and sustained drug release. LÄS MER

  3. 2. Melt spinning of poly(vinylidene fluoride) mono- and bicomponent fibres and yarns : the formation of piezoelectric beta-phase crystallinity

    Författare :Anja Lund; Högskolan i Borås; []
    Nyckelord :fibres; PVDF; Textilteknologi;

    Sammanfattning : The present study investigates the possibilities of manufacturing piezoelectric polymer fibres or yarns for integration into textile materials. The polymers known to give the strongest piezoelectric effects are poly(vinylidene fluoride) (PVDF) and some of its copolymers. LÄS MER

  4. 3. Structure, Morphology, and Catalytic Properties of CuOx/CeO2 Model Catalysts

    Författare :Björn Skårman; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Synchrotron radiation; High-energy Diffraction; X-ray Absorption Fine Structure Spectroscopy.; Chemical technology and engineering; Kemiteknik och kemisk teknologi; Chemistry; Kemi; Material technology; Materiallära; materialteknik; X-ray photoelectron spectroscopy; Atomic force microscopy; Gatan Image Filter GIF ; Energy-filtered TEM; High-resolution electron microscopy; Inert gas condensation IGC ; rf Magnetron sputtering; Thermal activation; Batch reactor; Carbon monoxide oxidation; Surface sensitivity; Catalytic anisotropy; Growth; Nucleation; Topography; Roughness; Core-shell structures; Morphology; Nanostructured; Nanocomposite; Nanoparticles; Surface structure; Polycrystalline surfaces; Thin films; Copper oxide; Cerium dioxide CeO2 ; Ceria;

    Sammanfattning : Cerium dioxide, or ceria, is a chemically stable oxygen ion conducting material with a capacity to store and release oxygen, and is therefore extensively used in combustion catalysts. The Cu-Ce-O system has been identified as one of the most active catalysts for the combustion of carbon monoxide. LÄS MER

  5. 4. The influence of Morphology on the Transport and Mechanical Properties of Polyethylene

    Författare :Bereket Neway; KTH; []
    Nyckelord :n-hexane diffusion; polyethylene; free volume; solubility; sorption; desorption; mechanical properties; orientation; thermal properties; blend;

    Sammanfattning : The sorption/desorption behaviour of n-hexane in high molarmass linear polyethylene (PE) and branched PEs with 0.39 and5.09 hexyl branches per 100 main chain C atoms andcrystallinities between 4 and 82% at 298 K has been studied.Crystal core contents determined by Raman spectroscopy werealways lower than those determined by density measurements. LÄS MER

  7. 5. Synthesis of zeolites from economic raw materials

    Författare :Edgar Cardenas; Jonas Hedlund; Saul Cabrera; Niklas Hedin; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Zeolite; raw materials; Y-zeolite; ZSM-5; Chemical Technology; Kemisk teknologi;

    Sammanfattning : Synthesis methods using economic raw materials, such as kaolin and diatomite have been developed for the production of zeolites in the present work. Zeolite Y and ZSM-5 have been synthetized successfully from diatomite and kaolin, respectively. LÄS MER