Search for dissertations about: "Solid state NMR"

Showing result 1 - 5 of 92 swedish dissertations containing the words Solid state NMR.

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

    Author : Alexander Idström; Chalmers University of Technology; []
    Keywords : NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; CNC; crystallinity index; regenerated cellulose; 2D NMR; native cellulose; pulp; Solid-state NMR; ionic liquids; CP MAS 13C-NMR; hornification;

    Abstract : 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. READ MORE

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

    Author : Vasco Castro; Arnold Maliniak; Göran Lindblom; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Solid-State NMR; Membranes; Lipids; Glycolipids; Local Anesthetics; Hydration; Physical chemistry; Fysikalisk kemi; Physical Chemistry; fysikalisk kemi;

    Abstract : 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. READ MORE

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

    Author : Christina Gustafsson; Uppsala universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; 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;

    Abstract : 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. READ MORE

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

    Author : Ekaterina Leonova; Mattias Edén; Robin Harris; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; glass; glass structure and properties; NMR; magic angle spinning; chemical shift; Physical chemistry; Fysikalisk kemi; Physical Chemistry; fysikalisk kemi;

    Abstract : 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. READ MORE

  5. 5. Investigating structural changes of cellulose using NMR spectroscopy

    Author : Alexander Idström; Chalmers University of Technology; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; crystallinity index; NCC; ionic liquids; CP MAS 13C-NMR; hornification; native cellulose; regenerated cellulose; NMR cryoporometry; pulp; Solid-state NMR;

    Abstract : In this thesis solid-state NMR and NMR cryoporometry were used to gain information of the structure of cellulose. Measurements were conducted on both native and regenerated cellulose, exposed to a range of different treatments. READ MORE