Essays about: "anhydride"

Showing result 6 - 10 of 23 essays containing the word anhydride.

  1. 6. Cellulose oxalates in biocomposites

    University essay from KTH/Fiber- och polymerteknologi

    Author : Jiarong Liang; [2021]
    Keywords : cellulose; cellulose oxalate; compatibilizer; composite; mechanical properties; polypropylene; cellulosa; cellulosaoxalat; kompatibiliseringsmedel; komposit; mekaniska egenskaper; polypropylen;

    Abstract : Under de senaste åren, på grund av överanvändningen av icke förnybara resurser har den ekologiska miljön på jorden påverkats allvarligt. I takt med detta ökade oron bland människor om att resurserna skulle ta slut. Därför är det nödvändigt att utveckla och använda mer miljövänliga förnybara resurser. READ MORE

  3. 7. Biodegradation and ageing of bio-based thermosetting resins from lactic acid

    University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Author : Lara Lopes Gomes Hastenreiter; [2019]
    Keywords : bio-based polymer; lactic acid; glycerol; ethylene glycol; pentaerythritol; biodegradation; ageing; characterisation; DSC; TGA; FTIR; tensile;

    Abstract : The need for replacing petroleum-based polymers has been increasing and bio-based polymers prove to be a suitable solution. The aim of this thesis was to synthesize bio-based resins with different chemical architectures to evaluate the effect of the structure on the properties and on their response to ageing and biodegradation. READ MORE

  4. 8. Fracture characteristics of acetylated birch - Experimental and numerical studies

    University essay from Lunds universitet/Institutionen för byggvetenskaper; Lunds universitet/Byggnadsmekanik

    Author : Gary Lai; Samuel Plönning; [2019]
    Keywords : acetylation; modification; birch; fracture mechanics; Technology and Engineering;

    Abstract : Modication of wood is carried out to increase the durability and dimensional stability of wood, and one of the modication methods is acetylation. Acetylation of wood means that polymers in the cell wall react with acetic anhydride. READ MORE

  5. 9. Finger-jointing of acetylated Scots pine using a conventional MUF resin

    University essay from KTH/Byggnadsmaterial

    Author : Christian Wincrantz; [2018]
    Keywords : Acetylated wood; Scots pine; juvenile wood; finger-jointing; mechanical properties modulus of rupture.;

    Abstract : Acetylation of wood is a modification technique that chemically alters the wood substance and enhances several properties of wood. The basic principle is to impregnate wood with acetic anhydride to react and replace OH-groups with acetyl groups in the wood cell wall. READ MORE

  6. 10. Design and Preparation offilms from Birchwood Xylan

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Célia Marchand; [2018]
    Keywords : ;

    Abstract : Using and finding applications from biomass is and will continue to be an important subject forresearch, and biomass from trees, has shown several outstanding aspects other than just for the pulpand paper applications. It is now, more than ever, time to find efficient uses for all the woodcomponents, in particular, the hemicelluloses. READ MORE