Sökning: "poly vinyl acetate -grafted-chitosan"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden poly vinyl acetate -grafted-chitosan.

  1. 1. BJÖRNGRAVEN FRÅN KARATS En explorativ studie av arkeologiskt benmaterial och dess betydelse i den samiska religionen

    Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvård

    Författare :Matilda Sundström; [2021-03-11]
    Nyckelord :Bear grave; FTIR; Archeological Bone; PVAc; Sámi religion;

    Sammanfattning : This thesis is an exploratory study of a Sámi Bear Grave found on a small island in lake Karats, Jokkmokk in 1983. The grave was excavated in 1986 and put on display at Ájtte, Swedish Mountain and Sámi Museum in Jokkmokk. LÄS MER

  3. 2. A Comparative Life Cycle Assessment of Alternative Polymers to Poly(vinyl chloride) for Use in Flooring Applications

    Master-uppsats, Lunds universitet/Centrum för analys och syntes

    Författare :Caroline Almqvist; Pernilla Larsson; [2021]
    Nyckelord :PVC; Flooring; Life Cycle Assessment; LCA; Polymer technology; Earth and Environmental Sciences; Chemistry; Technology and Engineering;

    Sammanfattning : Poly(vinyl chloride) has a long history of use in the flooring industry. Throughout the years, several environmental and health issues have arisen concerning the production, usage and disposal of PVC. LÄS MER

  4. 3. Reaction Mechanism between Chitosan and Cerium(VI) Ammonium Nitrate for Production of a Greener Poly(Vinyl Acetate) Adhesive

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

    Författare :Mårten Schollin; [2021]
    Nyckelord :Chitosan; Poly vinyl acetate ; Cerium IV ammonium nitrate ; Grafting; Reaction mechanism;

    Sammanfattning : Poly(vinyl acetate) (PVAc) has a major application as an indoor wood adhesive. Low water stability is however, one of the greatest drawbacks of PVAc. By grafting PVAc from a chitosan (CS) backbone (CS-graft- PVAc) water stability of adhesive is increased while good mechanical and adhesive properties are retained. LÄS MER

  5. 4. Glucose Levulinates as Bio-plasticizers

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Wenxiang Xuan; [2017]
    Nyckelord :Gluocse esters; Levulinic acid; Plasticizer; Starch; Poly vinyl chloride ;

    Sammanfattning : Glucose, as the most plentiful sugar in nature, is a renewable resource and possesses excellent record in health safety. Levulinic acid is a platform chemical which plays an important role  in  biomass transformation and reactive intermediates. LÄS MER

  7. 5. Emulsion polymerization of vinyl acetate with renewable raw materials as protective colloids

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Hanna Lange; [2011]
    Nyckelord :Poly vinyl alcohol PVA ; Hydroxyethyl cellulose HEC ; Emulsion polymerization; Protective colloid; Starch;

    Sammanfattning : Emulsion polymerizations of vinyl acetate (VAc) were performed by fully or partially replacing poly(vinyl alcohol) (PVA) with renewable materials as protective colloids or by adding renewable materials, as additives or fillers, to the emulsions during or after polymerization. The purpose of the study was to increase the amount of renewable materials in the emulsion. LÄS MER