Sökning: "nano-fibrillated cellulose"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden nano-fibrillated cellulose.

  1. 1. Porous Cellulose Materials from Nano Fibrillated Cellulose

    Författare :Nicholas Cervin; Lars Wågberg; Monica Ek; Charlotta Hanson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : In the first part of this work a novel type of low-density, sponge-like material for the separation of mixtures of oil and water has been prepared by vapour deposition of hydrophobic silanes on ultra-porous nanocellulose aerogels. To achieve this, a highly porous (> 99 %) nanocellulose aerogel with high structural flexibility and robustness is first formed by freeze-drying an aqueous dispersion of the nanocellulose. LÄS MER

  3. 2. Paper-based Supercapacitors

    Författare :Britta Andres; Håkan Olin; Mats Sandberg; Mittuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; graphene; graphite; paper; nano fibrillated cellulose; supercapacitor; electric double-layer capacitor; energy storage; roll-to-roll; coating; kinetic energy recovery;

    Sammanfattning : The growing market of mobile electronic devices, renewable off-grid energy sources and electric vehicles requires high-performance energy storage devices. Rechargeable batteries are usually the first choice due to their high energy density. However, supercapacitors have a higher power density and longer life-time compared to batteries. LÄS MER

  4. 3. Hydrodynamic stability and turbulence in fibre suspension flows

    Författare :Mathias Kvick; Fredrik Lundell; Srdjan Sasic; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fluid mechanics; fibre suspension; turbulence; image analysis; hydrodynamic stability; nano-fibrillated cellulose;

    Sammanfattning : .... LÄS MER

  5. 4. Orientation of elongated particles in shear and extensional flow

    Författare :Karl Håkansson; Daniel Söderberg; Mats Nigam; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Elongated particles in fluid flows are a big part of the world we are living in. Gaining knowledge on how particles behave in different fluid flows can potentially increase the efficiency of industrial processes and decrease the world's energy consumption as well as improve the properties of future materials. LÄS MER

  7. 5. Preparation and Characterization of Electrochemical Devices for Energy Storage and Debonding

    Författare :Simon Leijonmarck; Göran Lindbergh; Ann Cornell; Leif Nyholm; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; adhesives; carbon fiber; debonding; delamination; electropolymerization; flexible battery; lithium-ion battery; paper battery;

    Sammanfattning : Within the framework of this thesis, three innovative electrochemical devices have been studied. A part of the work is devoted to an already existing device, laminates which are debonded by the application of a voltage. LÄS MER