Sökning: "functionalization of polymers"

Visar resultat 16 - 20 av 40 avhandlingar innehållade orden functionalization of polymers.

  1. 16. Tuning Properties of Surfaces and Nanoscopic Objects using Dendronization and Controlled Polymerizations

    Författare :Emma Östmark; Eva Malmström; Heikki Tenhu; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dendrimers; dendronized polymers; cellulose; Atom Transfer Radical Polymerization; Ring-Opening Polymerization; surface modification; grafting; superhydrophobic; amphiphilic polymer; block copolymer; Atomic Force Microscopy; Polymer chemistry; Polymerkemi;

    Sammanfattning : In this study, dendronization and grafting via controlled polymerization techniques, atom transfer radical polymerization (ATRP) and ring-opening polymerization (ROP), have been explored. Modification of surfaces and cellulose using these techniques, which enable grafting of well-defined polymer architectures, has been investigated. LÄS MER

  3. 17. Fundamental Aspects of Lignin Carbohydrate Complexes (LCC) : Mechanisms, Recalcitrance and Material concepts

    Författare :Nicola Giummarella; Martin Lawoko; Gunnar Henriksson; Arthur J. Ragauskas; KTH; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Lignin Carbohydrates Complexes; Phenyl Glycosides; Benzyl Ethers; Benzyl and γ-esters; Universal Mild Quantitative fractionation; LCC mechanism formation; Extracellular lignin; Dehydogenation polymer; Autohydrolysis; Recalcitrance; Acetylation role; HSQC; HMBC; HSQC-TOCSY; 13C; 31P NMR; Thioacidolysis-GC; SEC; Green; Biomimetic; One-pot-lignin functionalization; Lignin platform material.; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Covalent bonds between lignin and carbohydrates, forming a matrix referred to as lignin carbohydrate complexes (LCC), remain one of the most controversial topics in wood chemistry. A key issue is whether they are formed during chemical and mechanical pretreatments of the compact wood structure or actually present in wood prior to isolation. LÄS MER

  4. 18. Lipase-Catalyzed Syntheses of Telechelic Polyesters

    Författare :Magnus Eriksson; Karl Hult; Mats Martinelle; Sergio Riva; KTH; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Candida antarctica lipase B; lipase-catalysis; polymerization; telechelic; functional polyesters; ring-opening polymerization; polycondensation.; Biochemistry; Biokemi;

    Sammanfattning : Telechelic polyesters have successfully been synthesized with lipase-catalyzed polymerization. The produced telechelics had a high degree of di­functionalization, high purity (requiring little or no workup) and controlled degree of polymerization. The syntheses were performed in one-pot one-step reaction systems. LÄS MER

  5. 19. Prevention of bacterial colonization in hospital-acquired infections using electrically conducting polymers

    Författare :Salvador Gomez-Carretero; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Biofilms are bacterial assemblies developed as response to adverse environmental conditions and external threats. Within a biofilm, a complex and highly regulated internal architecture is developed, resulting in a network of interconnected microniches. LÄS MER

  7. 20. Micropatterning of hyaluronic acid hydrogels for in vitro models

    Författare :Ana María Porras Hernández; Maria Tenje; Maria Antfolk; Jörg Kütter; Uppsala universitet; []
    Nyckelord :Micropatterning; hyaluronic acid hydrogels; endothelial cells; alignment; cell chirality; Teknisk fysik med inriktning mot mikrosystemteknik; Engineering Science with specialization in Microsystems Technology;

    Sammanfattning : The human body consist of a vast number of cells, and jointly, the cells, form tissues and organs. The cells interact and respond to their local microenvironment. LÄS MER