Essays about: "ester bonds"

Showing result 1 - 5 of 7 essays containing the words ester bonds.

  1. 1. Investigation of acidic chemical recycling of poly(acetal-ester)s

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Saga Vesterbacka; [2023]
    Keywords : Poly actetal-ester s; Chemical plastic recycling; Hydrolysis; Acidic degradation; Akestra; PHVT; Re-polymerization; Polymer technology; Chemistry;

    Abstract : Plastic recycling is a very relevant topic from both environmental and economic viewpoints. Chemical plastic recycling is a logical solution to the plastic problems, which shows the potential to reduce plastic waste and carbon emissions from burning the plastics. READ MORE

  3. 2. Sustainable Polymer Production: Investigating Synthesis and Copolymerization of Cyclic Ketene Acetals

    University essay from KTH/Kemiteknik

    Author : Soufian Bourraman; Stella Staffas; Adam Brandt; Simon Isaksson; [2023]
    Keywords : Monomers; polymers; radical; radical ring opening polymerization; polymerization; BMDO; MMA; MVL; MBL; comonomer; copolymer; rROP; sustainable; biobased; degradable; monomer synthesis; plastic; polyester; bulk; solution; NMR; FTIR; TGA; DSC; SEC; hydrolysis; molecular weight; diol; ester bonds;

    Abstract : The large amount of non-degradable plastic waste has become a significant environmental concern, leading to an increased need for degradable plastics. Here in, to create degradable polymers, polyesters were produced through radical ring opening polymerization using cyclic ketene acetals. READ MORE

  4. 3. Bio-based resins for digital light processing : Mechanical and degradable properties

    University essay from KTH/Materialvetenskap

    Author : Moa Eklund; Amanda Olofsson Ribrant; [2023]
    Keywords : Digital Light Processing 3D Printing DLP ; Additive manufacturing; Bio-based; Polymer; Thermosets; Covalent Adaptable Networks CANs ; Recycling; Characterization.; Digital Light Processing 3D Printing DLP ; Additiv tillverkning; Bio-baserad; Polymer; Härdplast; Kovalenta Anpassningsbara Nätverk CANs ; Återvinning; Karaktärisering.;

    Abstract : Thermosets are appropriate materials for various applications due to benefits such as heat resistance and good mechanical properties. The disadvantages of traditional thermosets from a sustainable manufacturing perspective are that they are usually derived from fossil resources, and also have permanent cross-linked networks that are difficult to break, making them non-recyclable. READ MORE

  5. 4. Functional Bio-based Copolyesters: Properties and Abilities

    University essay from KTH/Fiber- och polymerteknologi

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

    Abstract : 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. READ MORE

  6. 5. Glucose Levulinates as Bio-plasticizers

    University essay from KTH/Skolan för kemivetenskap (CHE)

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

    Abstract : 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. READ MORE