Sökning: "solid-state NMR"

Visar resultat 1 - 5 av 76 avhandlingar innehållade orden solid-state NMR.

  1. 1. Investigating cellulose structure using solid-state NMR spectroscopy

    Författare :Alexander Idström; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; pulp; 2D NMR; hornification; CP MAS 13C-NMR; crystallinity index; ionic liquids; regenerated cellulose; CNC; Solid-state NMR; native cellulose;

    Sammanfattning : Cellulose is the most abundant polymer in nature and it is an important constituent in most flowers, trees, and even some animals. Cellulose has an established use in many important products, such as textile fibers, paper and paperboard, and recently new applications have received increased attention. LÄS MER

  2. 2. Solid-State NMR Characterization of Lipid Membranes

    Detta är en avhandling från Stockholm : Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi

    Författare :Vasco Castro; Stockholms universitet.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Solid-State NMR; Membranes; Lipids; Glycolipids; Local Anesthetics; Hydration; NATURAL SCIENCES Chemistry Physical chemistry; NATURVETENSKAP Kemi Fysikalisk kemi; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : This thesis deals with the study of lipid bilayer systems by solid-state nuclear magnetic resonance. Two-dimensional 1H-13C separated local field experiments under magic-angle spinning were employed to investigate structural and dynamical modifications of cell membranes, resulting from the addition of compounds with some biological relevance. LÄS MER

  3. 3. Solid state characterisation and compaction behaviour of pharmaceutical materials

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Christina Gustafsson; Uppsala universitet.; [2000]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacy; Solid-state; Tablet; Thermal analysis; Cellulose; Spectroscopy; NMR; NIR; FT-IR; Crystallinity; MVDA; FARMACI; PHARMACY; FARMACI; farmaceutisk farmakologi; Pharmaceutical Pharmacology;

    Sammanfattning : In this thesis, factors important in tableting operations and for tablet properties have been studied and characterised by different spectroscopic techniques as well as by some more conventionally used particle characterisation techniques. The spectroscopic techniques solid-state NMR, FT-IR and NIR spectroscopy, proved to be valuable tools in the estimation of particle and tablet properties, offering both specificity and sensitivity in the measurements. LÄS MER

  4. 4. Molecular Order and Dynamics in Nanostructured Materials by Solid-State NMR

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Boris Kharkov; KTH.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mesoporous materials; organic-inorganic nanocomposites; surfactants; liquid crystals; MCM-41; clays; conformational dynamics; solid-state NMR; local field spectroscopy; dipolar coupling; dipolar recoupling; spin decoupling.; Kemi; Chemistry;

    Sammanfattning : Organic-inorganic nanostructured composites are nowadays integrated in the field of material science and technology. They are used as advanced materials directly or as precursors to novel composites with potential applications in optics, mechanics, energy, catalysis and medicine. LÄS MER

  5. 5. Structural Investigations of Complex Glasses by Solid-state NMR

    Detta är en avhandling från Stockholm : Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi

    Författare :Ekaterina Leonova; Stockholms universitet.; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; glass; glass structure and properties; NMR; magic angle spinning; chemical shift; NATURAL SCIENCES Chemistry Physical chemistry; NATURVETENSKAP Kemi Fysikalisk kemi; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : This PhD thesis presents structural investigations of amorphous inorganic materials: oxide and oxynitride glasses and mesoporous bioactive glasses (MBGs), by solid-state Nuclear Magnetic Resonance (NMR).Lanthanum oxide and oxynitride [La-Si-(Al)-O-(N)] glasses have a large number of potential applications due to their physical properties. LÄS MER