Search for dissertations about: "polymer-polymer"

Showing result 1 - 5 of 8 swedish dissertations containing the word polymer-polymer.

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

    Author : Yuxin Xia; Olle Inganäs; Ergang Wang; Hin-Lap Yip; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

    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

  4. 2. Associative Polymer-Polymer and Polymer-Surfactant Systems: Phase Behaviour and the Influence of Chemical Reactions

    Author : Salome Santos; Fysikalisk kemi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Aqueous mixtures of two non-ionic polymers, poly(acrylic acid) (PAA) and the amphiphilic triblock copolymer, (EO)27(PO)67(EO)27, known by its trade name Pluronic® P104, showed an associative phase separation (miscibility gap), which decreased with the decrease of PAA length. It was found that PAA is a much less selective “solvent” to P104 molecules than water. READ MORE

  5. 3. Polyelectrolyte complexes : Preparation, characterization, and use for control of wet and dry adhesion between surfaces

    Author : Caroline Ankerfors; Lars Wågberg; Regine von Klitzing; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This thesis examines polyelectrolyte complex (PEC) preparation, adsorption behaviour, and potential use for control of wet and dry adhesion between surfaces. PEC formation was studied using a jet-mixing method not previously used for mixing polyelectrolytes. READ MORE

  6. 4. Photoelectron spectroscopy studies of conjugated polymer surfaces and interfaces for organic-based light emitting devices

    Author : Grzegorz Greczynski; Hans Siegbahn; Linköpings universitet; []
    Keywords : ;

    Abstract : Since the initial discovery of metallic conductivity in doped polyacetylene in 1977, which lead to the Nobel Prize in Chemistry year 2000, the field of conducting polymers has expanded tremendously. Today, research developments in this area cover transistors, photodiodes and light emitting diodes (LEDs). READ MORE

  7. 5. Polyethylene Blends, a Material Concept for Future HVDC-cable Insulation

    Author : Mattias Andersson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polymer blends; nanocomposites; polyethylene; conductivity; thermomechanical properties; High-voltage insulation; tie-chain;

    Abstract : High-voltage cables are a critical component of tomorrow’s power grids that seamlessly integrate hydro, wind and solar power. Further improvements in transmission capacity of both high-voltage alternating- and direct-current, HVAC and HVDC, cables are likely reached through improved insulation materials. READ MORE