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Visar resultat 1 - 5 av 6 uppsatser som matchar ovanstående sökkriterier.

  1. 1. 3D Bioprinting Meniscus for Future Tissue Replacement in Osteoarthritis Affected Knee Joints

    H-uppsats,

    Författare :Ida Pettersson; Amanda Olsson Widjaja; [2020-06-22]
    Nyckelord :Alginate; Articular Cartilage; Bioink; Induced Pluripotent Stem Cells; Meniscus; Nanofibrillated Cellulose; Osteoarthritis; Screening; 3D Bioprinting;

    Sammanfattning : Progressive cartilage defects in human knee joints are a worldwide health issue that exposes a great burden on society as well as on single individuals. Sudden traumas to the knees can induce tears in the structures of the joints such as the articular cartilage and the meniscus. LÄS MER

  3. 2. Manufacturing of Lightweight Sandwich Composites with Bio-Based PU Foam Core and Cellulose Fiber Network Skin

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Nikolina Frisk; [2016]
    Nyckelord :;

    Sammanfattning : The use of lightweight material are at an increasing demand in our society. Particularly, PU foams are used as lightweight insulation and support in sandwich composites for a wide range of products such as walls, packaging and car bumpers. LÄS MER

  4. 3. Sambandet mellan cellulosakedjans polymerisationsgrad och styrkan i nanofibrillerad cellulosafilm

    Uppsats för yrkesexamina på grundnivå, KTH/Skolan för kemivetenskap (CHE)

    Författare :Alice Landmér; [2015]
    Nyckelord :Cellulosa; bomull; nanofibrillerad cellulosa; NFC; karboxymetylering; homogenisering; polymerisationsgrad; D.P.; hydrolys; NFC-film;

    Sammanfattning : Studiens syfte var att undersöka vilken effekt cellulosakedjornas polymerisationsgrad (D.P.) har på styrkan i nanofibrillerad cellulosafilm (NFC-film). Detta är av intresse på grund av tidigare studier som indikerar att både filmstyrkan och töjningen hos NFC-film ökar med ett ökande D. LÄS MER

  5. 4. NFC-Spore Biocomposites : A study of flame retardancy, density, mechanical properties and production of films

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Tomas Romson; Victor Goch; [2014]
    Nyckelord :Lycopodium; Nanofibrillated cellulose; Mechanical properties; Flame retardancy; Film production;

    Sammanfattning : Sporopollenin is considered a resistant material and might be applicable in flame retardant material. The use of renewable material in fields mainly dominated by toxic materials, such as bromides in flame retardant materials, could greatly improve the sustainability in those fields. LÄS MER

  7. 5. Chemical Modification of NFC: Development of Renewable Barriers for Packaging Applications

    Uppsats för yrkesexamina på avancerad nivå, KTH/Skolan för kemivetenskap (CHE)

    Författare :Jesper Pettersson; [2012]
    Nyckelord :Packaging; nanofibrillated cellulose NFC ; polymer modification; grafting; biocomposite;

    Sammanfattning : Globalization and centralization have resulted in prolonged transportation time between producer and consumer, and thus put more demand on the perseveration of a product for longer duration and protect it from oxidation. The presence of oxygen in packages severely foreshortens the storage life as it yield losses of nutrients and allow microbial growth, which can cause changes in smell, taste as well as discoloration. LÄS MER