Sökning: "Polymer Blends"

Visar resultat 1 - 5 av 60 avhandlingar innehållade orden Polymer Blends.

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

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Yuxin Xia; Linköpings universitet.; Linköpings universitet.; [2018]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : 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. LÄS MER

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

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Mattias Andersson; [2017]
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  3. 3. Synthesis and Modification of Conjugated Materials for Polymer Solar Cells

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Zandra George; [2016]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; polymer interlayer; polymer solar cells; stability; conjugated polymers; fullerene derivatives;

    Sammanfattning : Polymer solar cells have emerged as a promising alternative to silicon based solar cells. One of the advantages of polymer solar cells is the possibility to use roll-to-roll techniques for large-scale device production. However, in order to fully utilize this technique, several issues need to be resolved. LÄS MER

  4. 4. Mass Transport through Phase Separated Films - Effects of Ethyl Cellulose Molecular Weight on Cellulose Derivative Blends for Pharmaceutical Coatings

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Helene Andersson; [2012]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Controlled release; Ethyl cellulose; Film; Hydroxypropyl cellulose; Cellulose derivatives; Diffusion; Molecular weight; Mass transport; Polymer blend; Phase separation; Coating; Solvent evaporation;

    Sammanfattning : Polymer blends are utilized for a variety of applications, not least in pharmaceutical coatings for controlled release of drugs. For instance, blends of ethyl cellulose (EC) and the water-soluble hydroxypropyl cellulose (HPC) can be used to coat drug pellets for oral extendedrelease formulations. LÄS MER

  5. 5. Functional Properties and Morphology of Recycled Post-consumer WEEE Thermoplastic Blends

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Erik Stenvall; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; morphology; melt-blending; compatibilisation; extrusion; SEBS; WEEE; physical ageing; TOF-SIMS; co-continuous; chemical degradation; plastics recycling;

    Sammanfattning : This work concerns a waste electrical and electronic equipment blend of recycled plastics (WEEEBR), reprocessed from a low density thermoplastics batch (600 kg) by removal of non-thermoplastic contamination (1.2 weight % (wt%)). LÄS MER