Sökning: "chemical recyclability"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden chemical recyclability.

  1. 1. Characterisation of Ionic Liquid doped Polybenzimidazole Membranes for Application in High-Temperature Proton Exchange Membrane Fuel Cells

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Adam Jacobsson Trönndal; [2023]
    Nyckelord :Fuel cells; Phosphoric acid; Polybenzimidazole; PA-PBI; Ionic liquid; IL; High temperature proton exchange membrane fuel cell; HT-PEMFC; Electrochemical impedance spectroscopy; EIS; IL-PBI; Chemical engineering; Technology and Engineering;

    Sammanfattning : In this study four membranes were tested and evaluated against each other for use in high-temperature proton exchange membrane fuel cell (HT-PEMFC) applications. A phosphoric acid (PA) doped polybenzimidazole (PBI) membrane, was used as a reference as the current state-of-the-art. LÄS MER

  3. 2. Biobased Photocurable Resins for 3D-Printing of Self-Healable & Recyclable Thermosets

    Kandidat-uppsats, KTH/Fiber- och polymerteknologi

    Författare :Anna Gardell; Maria Aspenberg; Julia Aziz; [2022]
    Nyckelord :vanillin; vitrimer; imine; resin; dynamic covalent bonds; biobased thermoset; photocuring; chemical recyclability; self-healing; digital light processing DLP ; 3D-printing; vanillin; vitrimer; imin; resin; dynamiska kovalenta bindningar; biobaserad härdplast; fotohärdning; kemisk återvinningsbarhet; självläkning; digital light processing DLP ; 3D-utskrift;

    Sammanfattning : Överkonsumtionen av engångsartiklar i fossilbaserad plast är ett av dagens stora miljöproblem. Således finns en efterfrågan på strategier för framställning av biobaserade plaster i allmänhet och härdplaster i synnerhet. LÄS MER

  4. 3. The impact of interface characteristics on the recyclability and repulpability of packaging material

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Ingrid Isacsson; [2022]
    Nyckelord :Tetra Pak ®; Recyclability; repulpability; packaging material; fiber-based barrier; chemical engineering; Technology and Engineering;

    Sammanfattning : The world is slowly moving towards a more environmentally friendly mindset and many companies, such as Tetra Pak® have followed this lead by producing more environmentally friendly products and developing better materials with less environmental impact. To accommodate these requirements, it is important that the package is recyclable. LÄS MER

  5. 4. Tribological and Mechanical Behaviour of 3D Printed Polymeric Bearings

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Sallar Ali Qazi; [2021]
    Nyckelord :Additive manufacturing; Rapid prototyping; 3D-Printing; Fused Filament Fabrication FFF ; Fused Deposition Modeling FDM ; Tribology; polyoxymethylene POM ;

    Sammanfattning : Plastics contribute 2 GTons to the global carbon footprint, today, several countries have set targets to achieve carbon neutrality. Plastics, being a major contributor to global carbon footprint, would need to be reduced significantly from our daily life to achieve that or a way needs to be devised to recycle them. LÄS MER

  7. 5. Tribological behaviour of metal sulfides UHMWPE composites in dry lubrication

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Bruno Pizone Vaz; [2021]
    Nyckelord :Polymer composites; polymer tribology; dry lubrication; UHMWPE; metal sulfides; tribology;

    Sammanfattning : The increasing worldwide demand for more eco-friendly materials with improved tribo- logical properties has expanded the interest in research on polymer as an alternative for conventional metal/metal contacts under dry lubrication. Specifically, UHMWPE, a semi-crystalline polymer, has shown interesting tribological properties for low demanding applications, allied with excellent recyclability, manufacturability and low cost. LÄS MER