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Showing result 1 - 5 of 7 swedish dissertations matching the above criteria.

  2. 1. Towards an accurate determination of lignin in chemical pulps : The meaning of kappa number as a tool for analysis of oxidable groups

    Author : Jiebing Li; KTH; []
    Keywords : TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : Lignin content is the most important parameter in chemicalpulping. At present, kappa number is the most common parameterfor determination of lignin content and the base for otheron-line methods and for industrial automation (Chapter 1). READ MORE

  4. 2. Microwave heating effects on degradation and migration of additives from polypropylene packaging

    Author : Jonas Alin; Minna Hakkarainen; Jiebing Li; Anna Finne Wistrand; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Polymer chemistry; Polymerkemi;

    Abstract : The effect of different food types, polymer qualities and microwaves on the overall and specific migration during microwave heating of plastic packaging was investigated to better understand the packaging-food interactions and the effect of microwaves on food packaging. This work focuses on the migration of chemical compounds to food simulants from commercially available polypropylene packages. READ MORE

  5. 3. Establishment of ligning and other bio-renewable materials as fuels and material developments for better performance for fuel cell technology

    Author : Raquel Bohn Lima; Jiebing Li; Mahmut D. Mat; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : .... READ MORE

  6. 4. Deepening the insights of lignin structure : Lignin-carbohydrate complex (LCC) fractionation and characterization and Kraft lignin amination

    Author : Xueyu Du; Jiebing Li; Mikael Lindström; Jussi Sipilä; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Improvement of kraft pulping delignification efficiency and value-addition of industrial kraft lignin are two attractive topics. The proposal that delignification is deteriorated by the presence of lignin-carbohydrate complex (LCC) is still being debated. READ MORE

  7. 5. Physical, Chemical and Biochemical Modifications of Industrial Softwood Kraft Lignin for Different Applications

    Author : Miao Wang; Jiebing Li; Mikael Lindström; Elisabeth Sjöholm; Gunnar Westman; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Kemi; Chemistry;

    Abstract : Various technical lignins, e.g. industrial Softwood Kraft lignin (SKL), are now largely available while they are generally underutilized due to their heterogeneous and complicated structures and/or the poor properties. READ MORE