Sökning: "lignin nanoparticles"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden lignin nanoparticles.

  1. 1. Glyoxylic-Modified Lignin for Synthesis of Smart Elastomer and Composite Materials

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Xinyi Wei; [2023]
    Nyckelord :Lignin; lignin-based elastomer; nanocomposites; Lignin; ligninbaserad elastomer; nanokompositer;

    Sammanfattning : Sustainable development has become a global goal and the utilization of bioresources is a key way to achieve this crucial goal. Glyoxylic acid-functionalized lignin (GA-lignin) is one of the novel lignin derivatives extracted from beech wood (hardwood) and has great potential to be an industrially important bioresource. LÄS MER

  3. 2. Methods and Potentials of Kraft Lignin Esterification

    Master-uppsats, KTH/Fiber- och polymerteknologi

    Författare :Taoran Xu; [2023]
    Nyckelord :Kraft lignin; acetylation; fatty acid esterification; quantitative 31P NMR; lignin nanoparticles; Kraftlignin; acetylering; fettsyreesterifiering; kvantitativ 31P NMR; lignin nanopartiklar;

    Sammanfattning : Lignin, en av huvudkomponenterna i lignocellulosabiomassa, utgör en stor mängd av sidoströmen från massaindustrin. Lignin är aromatiska makromolekyler som förekommer i rikliga mängder i naturen och uppvisar unika antioxidant-, uv-skyddande, anti-ultravioletta, antikorrosiva och antimikrobiella egenskaper, etc. LÄS MER

  4. 3. Development of magnetic lignin nanoparticles from low-molecular-weight eucalyptus and spruce lignin fractions

    Kandidat-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Anna Wessén; Eliot Diklev; Lejla Al-Tamimi; [2020]
    Nyckelord :Magnetic nanoparticles; Hardwood; Softwood; Self-assembly; Lignin;

    Sammanfattning : Lignin is one of the most common biopolymers in the world. Together with cellulose andhemicellulose it constitutes the fibers in the wood. It has a high molecular weight due to its complexstructure consisting of crossed-linked phenolic monomers and is concatenated with different types ofcarbon and ether bonds. LÄS MER

  5. 4. The impact of the pulping process on the properties of lignin nanoparticles

    Uppsats för yrkesexamina på grundnivå, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Kristoffer Guthenberg; [2020]
    Nyckelord :Lignin; Nano; Nanoparticles; Extraction; Kraft; Organosolv; Softwood; Properties;

    Sammanfattning : Lignin valorization is a key component of the total utilization of biomass in the biorefinery industry. Lignin has seen some use in several different applications, but a breakthrough is still yet to happen, and there is still a need to find more areas where lignin can be used as an alternative feedstock or as the main component. LÄS MER

  7. 5. Optical Characterization of Lignin Nanoparticles

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

    Författare :Kristoffer Linder; [2020]
    Nyckelord :lignin; nanoparticles; nanoparticle; optical characterization; optical properties; surface plasmon resonance;

    Sammanfattning : Lignin is one of the main components of wood and plants that acts as a kind of glue providing mechanical strength. It is a main polymer component composed from three phenolic structures, i.e. p-hydroxyphenyl (H), guaiacyl (G) and syringyl (S) units. LÄS MER