Sökning: "polymer chain length"

Visar resultat 1 - 5 av 59 avhandlingar innehållade orden polymer chain length.

  1. 1. Ordering in Crystalline Short-Chain Polymer Electrolytes

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Anti Liivat; Uppsala universitet.; [2007]
    Nyckelord :Atomic and molecular physics; polymer electrolytes; molecular dynamics; ionic conductivity; crystalline ordering; polymer chain length; smectic; nematic; Atom- och molekylfysik;

    Sammanfattning : Polymer electrolytes are the most obvious candidates for safe "all-solid" Li-ion batteries and other electrochemical devices. However, they still have relatively poor ionic conductivities, which limits their wider adoption in commercial applications. LÄS MER

  2. 2. Computer Simulations of Polymer Gels Structure, Dynamics, and Deformation

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Natasha Kamerlin; Uppsala universitet.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; computer simulations; Brownian dynamics; polymer gel; microgel; spherical boundary conditions; hypersphere; core-shell; deswelling; mechanical properties; uniaxial elongation;

    Sammanfattning : This thesis presents the results of computer simulation studies of the structure, dynamics, and deformation of cross-linked polymer gels. Obtaining a fundamental understanding of the interrelation between the detailed structure and the properties of polymer gels is a challenge and a key issue towards designing materials for specific purposes. LÄS MER

  3. 3. Inorganic and organic polymer-grafted nanoparticles : their nanocomposites and characterization

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Carmen Cobo Sanchez; KTH.; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Si-ATRP; ATRP; polyelectrolytes; rGO; aluminium oxide; silica; CNF; CNC; PCL; LDPE; EBA; nanocomposites; matrix-free; extrusion; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Nanocomposites (NCs) have been widely studied in the past decades due to the promising properties that nanoparticles (NPs) offer to a polymer matrix, such as increased thermal stability and non-linear electrical resistivity. It has also been shown that the interphase between the two components is the key to achieving the desired improvements. LÄS MER

  4. 4. Understanding Ionic Conductivity in Crystalline Polymer Electrolytes

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Daniel Brandell; Uppsala universitet.; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Polymer electrolyte; molecular dynamics; conductivity mechanism; aliovalent anion substitution; smectic; nematic; polymer chain length; Kemi; NATURAL SCIENCES Chemistry; NATURVETENSKAP Kemi;

    Sammanfattning : Polymer electrolytes are widely used as ion transport media in vital applications such as energy storage devices and electrochemical displays. To further develop these materials, it is important to understand their ionic conductivity mechanisms. LÄS MER

  5. 5. Chiral Liquid Crystalline Side-Chain Polymers. Design, Synthesis and Properties

    Detta är en avhandling från Chalmers University of Technology

    Författare :Magnus Svensson; Chalmers tekniska högskola.; Chalmers University of Technology.; [1997]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kemi; Chemistry; side-group; lateral substituent; molar mass; polysiloxane; ferroelectric; polymer; electro-optic; thin film;

    Sammanfattning : The potential use of chiral liquid crystalline materials, low molar mass as well as polymers, in technical applications has been recognized for some decades now. A number of interesting phenomena based on the spontaneous ordering of the liquid crystal forming molecules are strong reasons for the research effort in this area. LÄS MER