Sökning: "cellulose nanofibers"

Visar resultat 1 - 5 av 10 uppsatser innehållade orden cellulose nanofibers.

  1. 1. Enhancement of translucence in fiber-based packaging materials

    Master-uppsats, KTH/Fiber- och polymerteknologi

    Författare :Saila Tallinen; [2022]
    Nyckelord :Paper; translucent; fiber-based packages; impregnation; cellulose; papper; genomskinlighet; fiberbaserade förpackningsmaterial; impregnering; cellulosa;

    Sammanfattning : The utilization of fiber-based packages has started to take more place at the packaging sector but is still restricted by a lack of transparency. Today this challenge is tried to be solved by paying more attention on the characteristics of nanofibers and their possibilities. LÄS MER

  3. 2. Evaluation of electrospun lignin/polyvinyl alcohol/cellulose nanofiber mats

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

    Författare :Lisa Johansson Carne; [2021]
    Nyckelord :Electrospinning; lignin; polyvinyl alcohol; cellulose nanofiber; wound dressing;

    Sammanfattning : Polymeric electrospun nanofiber mats have recently emerged as a promising alternative to conventional wound dressings for non-healing wounds. Its large surface area, porosity and scalability are only a few of the promising characteristics of electrospun nanofibers. LÄS MER

  4. 3. Biobased carbon aerogels incorporated with zeolite nanoplates for carbon dioxide adsorption

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

    Författare :Maria Harila; [2021]
    Nyckelord :biobased; carbon aerogel; lignin; cellulose nanofiber; adsorption; carbon dioxide; zeolite nanoplate;

    Sammanfattning : Over the last 100 years there has been an increase of greenhouse gases (CO2, CH4 and N2O) in the atmosphere. These gases cause several problems with the climate on Earth, such as increasing problems with extreme weather. One way to decrease the outlet of carbon dioxide is by adsorption and capture of CO2. LÄS MER

  5. 4. Acoustic Droplet Vaporization : An Assessment of How Ultrasound Wave Parameters Influence the Vaporization Efficiency

    Master-uppsats, KTH/Medicinteknik och hälsosystem

    Författare :Sara Öquist; [2020]
    Nyckelord :Acoustic Droplet Vaporization; Verasonics; Ultrasound; Vaporization Efficiency; Phase-change Contrast Agents;

    Sammanfattning : Acoustic droplet vaporization (ADV) is a process in which a phase shift of a liquified droplet into a gaseous microbubble, is triggered using an ultrasonic wave. In contrast to utilizing conventional contrast agents in ultrasound, the phase change contrast agents used in ADV can extravasate into tumor tissue, and they offer a greater circulatory lifespan, thereby increasing the potential applications in which they can be utilized. LÄS MER

  7. 5. Fibers and Textiles Produced from Chitin and Chitosan : A Literature Study For Different Production Methods

    M1-uppsats, Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Författare :Doaa Hameed; Tamar Manouel; [2020]
    Nyckelord :chitin; chitosan; fibers; nanofibers; textiles; wound dressing; sutures; spinning;

    Sammanfattning : Ökningen av världspopulationen har orsakat en ökad avfallsgenerering. Avfallet kan innehålla betydelsefulla ämnen, vilka kan användas som råvaror i många olika material och för olika ändamål. LÄS MER