Sökning: "solvent-free"

Visar resultat 6 - 10 av 35 avhandlingar innehållade ordet solvent-free.

  1. 6. Chemo-Enzymatic Epoxidation of Unsaturated Fatty Acids

    Författare :Cecilia Orellana Coca Åkerman; Bioteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bioteknik; Biotechnology; solvent-free process.; Candida antarctica lipase B esterification; chemo-enzymatic epoxidation; Unsaturated fatty acids; epoxides;

    Sammanfattning : Epoxy fatty acids are useful molecules and find a number of applications e.g. as PVC plasticisers and stabilisers, additives in polyurethane production, reactive diluents in paints, corrosion protection agents, etc. LÄS MER

  3. 7. Creating Optical Activity: Total Spontaneous Resolution and Viedma Ripening

    Författare :Per Martin Björemark; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Optical activity; absolute asymmetric synthesis; total spontaneous resolution; Viedma ripening; grinding; chirality; conglomerate; coordination compound; coordination polymer; single crystal X-ray diffraction; solvent free oxidation; nantioselective sulfide oxidation; solid state VCD;

    Sammanfattning : The creation of optical activity has been considered as something impossible even though reports of such creation via total spontaneous resolution since the 1940´s have been published. More recently Viedma ripening have been developed that also produce enantiopure bulk product. Both methods are examples of absolute asymmetric synthesis i.e. LÄS MER

  4. 8. Covalent Vapor-Phase Grafting of Degradable Polymers

    Författare :Martina Källrot; Ann-Christine Albertsson; Maria Nowokowska; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Vapor-phase grafting; covalent surface modification; functionalization; solvent-free grafting; sub-micron patterned topography; scaffolds; degradable polymers; poly L-lactide ; poly ε-caprolactone ; poly trimethylene carbonate ; poly L-lactide-co-glycolide ; poly 1; 5-dioxepan-2-one-co-L-lactide ; poly ε-caprolactone-co-L-lactide ; N-vinylpyrrolidone; maleic anhydride; acrylamide; acrylic acid; hyaluronic acid; in vitro degradation; Gasfasympning; kovalent ytmodifiering; funktionalisering; lösningsmedelsfri ympning; sub-micrometer mönstrad topografi; nedbrytbara polymerer; poly L-laktid ; poly ε-kaprolakton ; poly trimetylen karbonat ; poly L-laktid-co-glykolid ; poly 1; 5-dioxepan-2-one-co-L-laktid ; poly ε-kaprolakton-co-L-laktid N-vinylpyrrolidon; maleinsyraanhydrid; akrylamid; akrylsyra; hyaluronsyra; in vitro nedbrytning; Polymer chemistry; Polymerkemi;

    Sammanfattning : Gasfasympning är en del i den moderna strategin för optimering av den molekylära designen av biomaterial. Kovalent ytmodifiering med hydrofila vinylmonomerer och koppling med bioaktiva grupper används för att öka biokompatibiliteten och bioaktiviteten hos biomaterialen.. LÄS MER

  5. 9. Fabrication of Polymer Electrolytes for 3D-Microbatteries

    Författare :Bing Sun; Daniel Brandell; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 3D-microbattery; Polymer electrolyte; Multifunctional monomer; Polyetheramine; Polycarbonate; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

    Sammanfattning : Pressing demands on electrical energy storage require high power and high energy density rechargeable batteries with improved safety, reliable performance and low cost. This has led to reconsiderations in the choice of battery chemistry and battery design. LÄS MER

  7. 10. Shedding light on liquid chromophores using machine learning

    Författare :Eric Lindgren; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; machine learning; molecular dynamics; neutron scattering; machine learned force fields; chromophores;

    Sammanfattning : Chromophores are a class of molecules with widespread use in nature. Chlorophyll in plants contain chromophores making photosynthesis possible and the retinal molecules in our eyes have chromophores making the world around us visible. LÄS MER