Sökning: "tvärbindning"

Visar resultat 1 - 5 av 9 uppsatser innehållade ordet tvärbindning.

  1. 1. Functional Bio-based Copolyesters: Properties and Abilities

    Master-uppsats, KTH/Fiber- och polymerteknologi

    Författare :Fika Andriani; [2022]
    Nyckelord :Ring-opening copolymerization; epoxide; anhydride; crosslinked; degradation; Ringöppningssampolymerisation; epoxid; anhydrid; tvärbundet; nedbrytning;

    Sammanfattning : Genom ringöppningssampolymerisation av utvalda epoxider och anhydrider möjliggjordes en enkel strategi för att syntetisera funktionella sampolymerer. Sampolymererna hade förmågan att bilda tvärbundna material, och var dessutom benägna för både hydrolytisk och enzymatisk nedbrytning. LÄS MER

  3. 2. Polymer Directed Engineering of Novel Cellulose Network

    Kandidat-uppsats, KTH/Fiber- och polymerteknologi

    Författare :Christel Gradin; Adina Landström; Julia Szecsödy; [2021]
    Nyckelord :Hydrogel; Carboxylated CNF; TEMPO-oxidation; bis-MPA ammonium dendrimer; Polymer salt bridge; Rheology;

    Sammanfattning : This study investigated a CNF/dendrimer hydrogel and how different concentrations of the carboxylated CNF and bis-MPA ammonium dendrimer affected the hydrogels’ rheological properties. A third generation bis-MPA ammonium dendrimer was diffused into a dispersion of carboxylated cellulose nanofibrils. LÄS MER

  4. 3. Comparison of Corn and Rye Arabinoxylans for the Production of Bio-based Materials

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

    Författare :Chen Chen; [2020]
    Nyckelord :cereal bran; subcritical water extraction; arabinoxylans; enzymatic crosslinking; hydrogel; spannmålskli; extraktion av subkritiskt vatten; arabinoxylaner; enzymatisk tvärbindning; hydrogel;

    Sammanfattning : Enzymes and subcritical water can be used for the extraction of hemicelluloses from cereal by-products, making the processes eco-friendly. The polysaccharides extracted from cereal by-products can be used as matrices for development of materials for various applications. LÄS MER

  5. 4. Development of corrosion resistant coatings using natural biopolymer and pollen

    Master-uppsats, KTH/Materialvetenskap

    Författare :Alessandro Armani; [2020]
    Nyckelord :;

    Sammanfattning : Corrosion is a mechanism that highly reduces the lifetime of metals in different environments, especially in water or moisture environment. The worldwide maintenance cost due to corrosion is estimated in billions of dollars per year, and actual solutions in terms of coating usually contains toxic or environmentally harmful species. LÄS MER

  7. 5. A novel chitosan-stearic coating with bee-pollen microcapsules for corrosion protection

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Albin Andersson; [2020]
    Nyckelord :;

    Sammanfattning : In this project a novel chitosan-stearic acid (CS-SA) coating with bee-pollen microcapsules for encapsulation of 2-mecraptobenzothiazole (MBT) as a waterborne formulation for a biocompatible corrosion protection coating was developed and the coating properties was analyzed. Hydrophobic stearic acid (SA) was crosslinked with via a carbodiimide reaction to form micelles and is assembled on the bee- pollen grains and the chitosan matrix was further self-crosslinked using glutaraldehyde (GA). LÄS MER