Search for dissertations about: "polymer blends"

Showing result 1 - 5 of 78 swedish dissertations containing the words polymer blends.

  1. 1. Polymer/polymer blends in organic photovoltaic and photodiode devices

    Author : Yuxin Xia; Olle Inganäs; Ergang Wang; Hin-Lap Yip; Linköpings universitet; []

    Abstract : Organic photovoltaics devices (OPV) have attracted attentions of scientist for their potential as inexpensive, lightweight, flexible and suitable for roll-to-roll production. In recent years, considerable attention has been focused on new acceptor materials, either polymeric or small molecules, to replace the once dominating fullerene derivatives. READ MORE

  2. 2. Interphases in Polymer Blends

    Author : Hans Eklind; Chalmers University of Technology; []
    Keywords : morphology; interdiffusion; compatibilization; characterization; interfacial interaction; mobility; micromechanical transition; dynamic mechanical properties; interphase; polymer blend;

    Abstract : The blending of polymers is a useful means of combining and improving the properties of already existing polymers in the development of new materials at reasonable cost. As most polymers are immiscible with each other, heterogeneous blends are often formed. The properties of such blends are strongly determined by the properties of the interphase. READ MORE

  3. 3. Filler Controlled Morphology in Polymer Blends

    Author : Anders L. Persson; Chalmers University of Technology; []
    Keywords : filled polymer blends; Lewis acid-base properties; co-continuous; rheokinetics; viscosity minimation; polymer solid interactions; crystallinity gradient;

    Abstract : The morphology of a polymer blend can be altered very dramatically when a filler is added. Depending on the mutual interactions of the polymers and their individual interactions with the filler, many different filler distributions are possible. READ MORE

  4. 4. Lithium Ion Conductive Membranes Based on Co-continuous Polymer Blends

    Author : Anette Munch Elmér; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Polymerteknik; Polymer technology; biopolymers; conductivity measurements; in-situ UV-polymerisation; solution casting; poly methyl methacrylate ; vinylidene fluoride copolymers; poly ethylene carbonate-co-ethylene oxide methacrylate; PEG methacrylate macromonomers; heterogeneous polymer blends; polymer electrolyte membranes; lithium salt containing gels;

    Abstract : There is a growing need for multifunctional polymeric materials for the development of several important energy conversion technologies. For example, the polymer electrolyte is a key component in lithium polymer batteries. The basic functions of this electrolyte are to efficiently conduct the lithium ions and physically separate the electrodes. READ MORE

  5. 5. Melt flow and surface stability effects on polymer flammability : A study on polystyrene, flexible polyurethane foam and polyolefin composites

    Author : Roland H. Krämer; Ulf W. Gedde; Norman C. Billingham; KTH; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Melt; flow; dripping; collapse; combustion; pool fire; feed‐back; gasification; heat release; flammability; nanocomposites; molar mass; intumescence; polyurethane; Polymer chemistry; Polymerkemi;

    Abstract : Our ability to accurately determine the flammability properties of polymers is hampered bythe erratic effects of deformation and liquid flow that occur during polymer combustion.This study aims to improve the understanding of such effects at several levels: The often obvious impact of melt flow on standardized flammability test methods forelectrical appliances is described to identify the need and to motivate others to worktowards an improved material characterization. READ MORE