Sökning: "cp-mas nmr"

Visar resultat 1 - 5 av 23 avhandlingar innehållade orden cp-mas nmr.

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

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

    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

  3. 2. Investigating structural changes of cellulose using NMR spectroscopy

    Författare :Alexander Idström; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; crystallinity index; NCC; ionic liquids; CP MAS 13C-NMR; hornification; native cellulose; regenerated cellulose; NMR cryoporometry; pulp; Solid-state NMR;

    Sammanfattning : 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. LÄS MER

  4. 3. Characterisation of powder cellulose, microcrystalline cellulose and porous cellulose beads : application of 13 C CP/MAS and spin echo NMR techniques

    Författare :Ragnar Ek; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; PHARMACY; FARMACI;

    Sammanfattning : .... LÄS MER

  5. 4. Investigations of cellulose polymorphs by 13C-CP/MAS-NMR spectroscopy and chemometrics

    Författare :Helena Lennholm; Tommy Iversen; KTH; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  7. 5. CP/MAS 13C-NMR Spectroscopy Applied to Structure and Interaction Studies on Wood an Pulp Fibers

    Författare :Eva-Lena Hult; KTH; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER