Sökning: "ATRP"

Visar resultat 1 - 5 av 21 avhandlingar innehållade ordet ATRP.

  1. 1. Macromolecular Engineering by Surface-Initiated ATRP: : New Nanomaterials for Bioapplications

    Författare :Lingdong Jiang; Tillämpad biokemi; []
    Nyckelord :Nanohybrid; Polymer brush; ATRP; Bioseparation; Bioconjugate;

    Sammanfattning : The objective of this thesis is to investigate the synthesis of well-defined polymer nanohybrid materials bearing desirable functionality via surface-initiated atom transfer radical polymerization (SI-ATRP) for potential bioapplications.SI-ATRP is an excellent controlled radical polymerization (CRP) method for the synthesis of polymer nanohybrid by growing polymer brushes (chains) from an interface, which allows precise control over polymer composition, topology, and functionality. LÄS MER

  2. 2. Inorganic and organic polymer-grafted nanoparticles : their nanocomposites and characterization

    Författare :Carmen Cobo Sanchez; Eva Malmström; Henrik Hillborg; Anna Barros Timmons; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Si-ATRP; ATRP; polyelectrolytes; rGO; aluminium oxide; silica; CNF; CNC; PCL; LDPE; EBA; nanocomposites; matrix-free; extrusion; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Nanocomposites (NCs) have been widely studied in the past decades due to the promising properties that nanoparticles (NPs) offer to a polymer matrix, such as increased thermal stability and non-linear electrical resistivity. It has also been shown that the interphase between the two components is the key to achieving the desired improvements. LÄS MER

  3. 3. From Responsive Interfaces to Honeycomb Membranes by Controlled Radical Polymerisation

    Författare :Daniel Nyström; Anders Hult; Søren Hvilsted; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Isoporous membranes; Silica nanoparticles; ATRP; Functional surfaces; cellulose; Polymer chemistry; Polymerkemi;

    Sammanfattning : In this study, surface modification of both organic and inorganic substrates (in terms of cellulose and silica nanoparticles, respectively) has been explored using surface-initiated atom transfer radical polymerisation (ATRP). The desire to modify bio-based materials to fit into new application areas and the need for bio-based materials with improved material properties is steadily increasing due to environmental concern. LÄS MER

  4. 4. Polyhydroxyl and Polyphosphorylcholine functionalized Silica for Hydrophilic interaction liquid Chromatography- Synthesis, characterization and application

    Författare :Nhat Thi Hong Bui; Knut Irgum; Michael Lämmerhofer; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hydrophilic Interaction Chromatography; HILIC; silica; TRIS; acrylamide acrylate; ATRP; iniferter; “controlled living’’ radical polymerization; N; N′-methylenebisacrylamide; MPC; stationary phase; analytisk kemi; Analytical Chemistry;

    Sammanfattning : This thesis focuses on the development of new stationary phases for use in hydrophilic interaction liquid chromatography using TRIS-based and phosphorylcholine typed monomers and porous silica particles as starting substrates. In this thesis, several ways of polymerizing highly hydrophilic mono­mers onto pore surfaces of silica supports are described, based on several “grafting from” schemes. LÄS MER

  5. 5. Strategies for Molecular Engineering of Macroscopic Adhesion and Integrity Focusing on Cellulose Based Materials

    Författare :Andrea Träger; Lars Wågberg; Eva Malmström; Anna Carlmark; Matthew Tirrell; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; blockcopolymer; cellulose; adhesion; ATRP; micelle; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Many aspects of modern human life pose a strain on the delicate ecosystems around us. One example is marine litter – mainly various plastic items – which accumulate in the marine environment, where they cause problems for the fauna, such as ingestion and entanglement. LÄS MER