Sökning: "degree modification"

Visar resultat 1 - 5 av 124 avhandlingar innehållade orden degree modification.

  1. 1. Isolation and chemical modification of arabinoxylan and galactoglucomannan

    Författare :Linda Härdelin; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tg; Films; Material properties; Isolation; Etherification; Modification; PEGylation; Hemicellulose;

    Sammanfattning : Today’s society is based on the use of fossil fuels, where oil is used as transportation fuel and as raw material in the petrochemical industry. Efforts are made to increase the use of bio-based materials, since oil is a non-renewable source and a greenhouse gas contributor. LÄS MER

  3. 2. Surface Modification of Cellulose by Covalent Grafting and Physical Adsorption

    Författare :Linn Carlsson; Anna Carlmark; Eva Malmström; M. Naceur Belgacem; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Surface modification; cellulose; covalent modification; physical adsorption; polymer synthesis;

    Sammanfattning : The interest in new environmentally friendly cellulose‐based productshas increased tremendously over the last years. At the same time theSwedish forest industry faces new challenges in its strive to increase the utilization of cellulose fibers in high‐value end‐products. LÄS MER

  4. 3. ”Completely Headless”. Modification of adjectives in Swedish advanced learners' English

    Författare :Viktoria Börjesson; Göteborgs universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Swedish advanced learners; written English; spoken English; degree modification; adjectives; modifiers; reinforcers; attenuators; collocation; learner corpora; learner English; formal register; informal speech; genre awareness; academic writing; comparative study; contrastive interlanguage analysis;

    Sammanfattning : This is a corpus-based, empirical study, which investigates Swedish advanced learners’ written and spoken English with regard to modification of adjectives, both reinforcing (e.g. totally different, very nice) and attenuating (e.g. LÄS MER

  5. 4. Structured molecular sieves : synthesis, modification and characterization

    Författare :Valeri Naydenov; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Technology; Kemisk teknologi;

    Sammanfattning : The work presented concerns synthesis of structured molecular sieves. The preparation procedure is based on the use of ion exchange resins as macrotemplates. Macroporous cation or anion exchange resin types were used depending on the molecular sieve type to be synthesized. LÄS MER

  7. 5. Wood Nanocellulose Materials and Effects from Surface Modification of Nanoparticles

    Författare :Michaela Salajkova; Lars Berglund; Kritiina Oksman; KTH; []
    Nyckelord :Nanocellulose; nanoc omposite; dispersion; surface modification; surfa ctant; poly methyl methacrylate ; poly vinyl acetate ; carbon nanotubes; electrospinning; lubricant - infused surfaces;

    Sammanfattning : Nanocellulose is an interesting natural material thatis gaining interest in the field of materials science, particularly nanocomposites. Depending on the disintegration route, nanocellulose can be isolated either in the form of long and flexible fibres (nanofibrillated cellulose, NFC), or stiff, rod-like crystals (cellulose nanocrystals, CNC). LÄS MER