Search for dissertations about: "paa"

Showing result 1 - 5 of 29 swedish dissertations containing the word paa.

  1. 1. Molecular Interactions in Thin Films of Biopolymers, Colloids and Synthetic Polyelectrolytes

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Johansson Erik; KTH.; KTH.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polyelectrolyte multilayers; Layer-by-Layer assembly; Adhesion; Adsorption; Young s modulus; Mechanical buckling; AFM; JKR; SPAR; QCM-D; SIEBIMM; PAH; PAA; Starch; NFC; Nanocellulose;

    Abstract : The development of the layer-by-layer (LbL) technique has turned out to be an efficient way to physically modify the surface properties of different materials, for example to improve the adhesive interactions between fibers in paper. The main objective of the work described in this thesis was to obtain fundamental data concerning the adhesive properties of wood biopolymers and LbL films, including the mechanical properties of the thin films, in order to shed light on the molecular mechanisms responsible for the adhesion between these materials. READ MORE

  2. 2. Polymers at the Electrode-Electrolyte Interface Negative Electrode Binders for Lithium-Ion Batteries

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Fabian Jeschull; Uppsala universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; binder; CMC-Na; PAA; graphite; silicon; lithium-ion battery; photoelectron spectros-copy; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry; Kemi med inriktning mot polymerkemi; Chemistry with specialization in Polymer Chemistry; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

    Abstract : We are today experiencing an increasing demand for high energy density storage devices like the lithium-ion battery for applications in portable electronic devices, electric vehicles (EV) and as interim storage for renewable energy. High capacity retention and long cycle life are prerequisites, particularly for the EV market. READ MORE

  3. 3. Polymer Bound Water-Soluble Metal Phosphine Complexes-Preparation, Characterisation and Catalytic Application

    University dissertation from Torsten Malmström. Inorganic chemistry 1, Chemical Center, Box 124, Lund University, 22100 Lund, Sweden

    Author : Torsten Malmström; Lunds universitet.; Lund University.; [1998]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; enantioselective; SAP; hydrogenation; hydroformylation; catalysis; biphasic; rhodium; poly-ethylene imine; poly-acrylic acid; polymers; water-soluble; phosphines; Inorganic chemistry; Oorganisk kemi;

    Abstract : Popular Abstract in Swedish En ny typ av vattenlösliga fosfin ligander har utvecklats. Dessa fosfiner har använts som ligander i rhodium katalyserade tvåfasreaktioner.Komplexbildningen mellan de nya liganderna och olika metalcentra har studerats och de nya komplexen har använts i hydroformylerings- och hydreringsreaktioner. READ MORE

  4. 4. Formation and properties of polyelectrolyte multilayers on wood fibres  influence on paper strength and fibre wettability

    University dissertation from Stockholm : KTH

    Author : Rikard Lingström; KTH.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; polyelectrolyte; multilayer; adsorption; reflectance; contact angle; dynamics; paper; mechanical properties; individual; wood fibre; NATURAL SCIENCES Chemistry; NATURVETENSKAP Kemi;

    Abstract : The work in this licentiate thesis examines the adsorption of polyelectrolyte multilayers (PEM) onto wood fibres as a new way to influence the properties of the fibre surfaces and hence the fibres. Fundamental aspects of PEM formation on wood fibres have been studied, and discussed in terms of paper strength and wood fibre wettability. READ MORE

  5. 5. Bacterial adhesion to polyelectrolyte modified materials based on nanocellulose

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Jonatan Henschen; KTH.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bacterial adhesion; cellulose nanofibrils; polymer adsorption; polyvinylamine; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Abstract : Since the introduction of materials based on cellulose nanofibrils (CNFs), these materials have been studied extensively and are suggested to be suitable for use in, for example, hygiene and health care products. A property not very well studied but that could further increase the usability of CNF products is the possibility of controlling bacterial adhesion to the materials. READ MORE