Sökning: "Kraft cooking"

Visar resultat 1 - 5 av 45 avhandlingar innehållade orden Kraft cooking.

  1. 1. Xylan Reactions in Kraft Cooking Process and Product Considerations

    Detta är en avhandling från Stockholm : KTH

    Författare :Sverker Danielsson; KTH.; [2007]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Xylan; Kraft cooking; Paper strength; Sheet density; Methylglucuronic acid; Hexenuronic acid; TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Cellulose and paper engineering; TEKNIKVETENSKAP Kemiteknik Kemisk process- och produktionsteknik Cellulosa- och pappersteknik;

    Sammanfattning : Xylan is the main hemicellulose in birch, eucalyptus, and most other hardwood species. During kraft pulping a series of chemical reactions and physical processes involving xylan takes place. LÄS MER

  2. 2. Further insights into kraft cooking kinetics

    Detta är en avhandling från Stockholm : KTH

    Författare :Johannes Bogren; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Delignification; Donnan equilibrium; Memory effects; Hexenuronic acid; Hofmeister effects; Modelling; Kraft cooking; Ionic effects; Reaction kinetics;

    Sammanfattning : .... LÄS MER

  3. 3. Modified kraft pulping

    Detta är en avhandling från Institutionen för pappers- och massateknologi

    Författare :Peter Sandström; KTH.; [2000]
    Nyckelord :Delignification; Kraft cooking; Selectivity; Softwood;

    Sammanfattning : .... LÄS MER

  4. 4. Carbohydrate degradation and dissolution during Kraft cooking Modelling of kinetic results

    Detta är en avhandling från Karlstad : Karlstad University

    Författare :Dan Johansson; Karlstads universitet.; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Chemical engineering; TEKNIKVETENSKAP Kemiteknik; Chemical Engineering; Kemiteknik; Kraft cooking; softwood; hardwood; cellulose; xylan; glucomannan; degradation; dissolution;

    Sammanfattning : Chemical pulp fibres from wood are commonly used in products associated with packaging as well as with printing and writing. The prevalent way of liberating fibres is by subjecting wood chips to Kraft cooking. This process has a history of almost 130 years and should be both well described and well established. LÄS MER

  5. 5. On the Physical Chemistry of Kraft Lignin – Fundamentals and Applications

    Detta är en avhandling från Magnus Norgren, Mid Sweden University, SE-851 70 Sundsvall, Sweden

    Författare :Magnus Norgren; Mittuniversitetet.; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Chemistry; NATURVETENSKAP Kemi; kraft lignin; sodium taurodeoxycholate; bile acid salts; stabilisa-tion; Hofmeister series; fractals; DLCA; RLCA; self-aggregation; colloid; self-diffusion coefficients; DLVO; Poisson-Boltzmann; pKa; dissociation; macromolecule; kraft cooking; lignin; Fysikalisk kemi; Physical chemistry; cryo-TEM; light scattering; 1H PFG NMR;

    Sammanfattning : This thesis describes the physical chemistry of softwood kraft lignin in aqueous alkaline solutions. Both fundamental and applicational aspects are discussed. Kraft lignin originates either from pulp fibres or from black liquor produced by kraft cooking. LÄS MER