Sökning: "polymer surfaces grafting"

Visar resultat 1 - 5 av 31 avhandlingar innehållade orden polymer surfaces grafting.

1. 1. Tailoring Surface Properties of Bio-Fibers via Atom Transfer Radical Polymerization

   Författare :Josefina Lindqvist; Eva Malmström; Steven Rannard; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cellulose; bio-fiber; atom transfer radical polymerization; surface modification; grafting; polymer brushes; functional surfaces; superhydrophobic; stimuli-responsive; Polymer chemistry; Polymerkemi;

   Sammanfattning : The potential use of renewable, bio-based polymers in high-technological applications has attracted great interest due to increased environmental concern. Cellulose is the most abundant biopolymer resource in the world, and it has great potential to be modified to suit new application areas. LÄS MER

3. 2. 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

4. 3. Polymer Nanocomposites in Thin Film Applications

   Författare :Linda Fogelström; Anders Hult; José M. Kenny; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nanocomposites; hyperbranched polymers; montmorillonite; clay nanoparticles; exfoliated; coatings; crosslinking; TEM; XRD; mechanical properties; thermal properties; cellulose nanofibers; Atom Transfer Radical Polymerization; Ring-Opening Polymerization; poly ε-caprolactone ; surface modification; grafting; interfacial adhesion; Polymer chemistry; Polymerkemi;

   Sammanfattning : The introduction of a nanoscopic reinforcing phase to a polymer matrix offers great possibilities of obtaining improved properties, enabling applications outside the boundaries of traditional composites. The majority of the work in this thesis has been devoted to polymer/clay nanocomposites in coating applications, using the hydroxyl-functional hyperbranched polyester Boltorn® as matrix and montmorillonite clay as nanofiller. LÄS MER

5. 4. From Macro to Nano : Electrokinetic Transport and Surface Control

   Författare :Gaspard Pardon; Wouter van der Wijngaart; Philippe Renaud; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microsystem; nanosystem; microfluidic; nanofluidic; surface modification; surface property; electrokinetics; model; simulation; material; polymer; thiol-ene; microfabrication; nanofabrication; micromanufacturing; nanomanufacturing; breath sampling; aerosol precipitation; corona discharge; electrostatic precipitation; grafting chemistry; click chemistry; nanopore; nanoporous membrane; photolithography; photopatterning; photografting; microfluidics; nanofluidics; oste; OSTE ; OSTEmer; lab-on-chip; loc; point-of-care; poc; biocompatibility; diagnostics; breath analysis; fuel cell; Electrical Engineering; Elektro- och systemteknik; Teknisk materialvetenskap; Materials Science and Engineering; Fysik; Physics; Medical Technology; Medicinsk teknologi;

   Sammanfattning : Today, the growing and aging population, and the rise of new global threats on human health puts an increasing demand on the healthcare system and calls for preventive actions. To make existing medical treatments more efficient and widely accessible and to prevent the emergence of new threats such as drug-resistant bacteria, improved diagnostic technologies are needed. LÄS MER

7. 5. Biomolecule Trapping With Stimuli-Responsive Polymer Coated Nanostructures

   Författare :Justas Svirelis; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biomolecule transportation; protein interaction; polymer brushes; quartz crystal microbalance with dissipation monitoring; fluorescence microscopy; Poly N-Isopropylacrylamide ; surface plasmon resonance; poly ethylene glycol ;

   Sammanfattning : Trapping biomolecules in nanosized gaps is of great interest in novel systems for single molecule analysis and membranes, which filter biomolecules. Current platforms are lacking in full functionality to facilitate biomolecule trapping and transport in their native environment and without covalent tethering to surfaces. LÄS MER