Sökning: "PNIPAAm"

Visar resultat 6 - 10 av 11 avhandlingar innehållade ordet PNIPAAm.

1. 6. Modification and Utilization of Nanotube-vesicle Networks

   Författare :Martin Markström; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nanotechnology; diffusion; network; nanotube; biomimetic; hydrogel; vesicle; compartmentalization; poly N-isopropyl acrylamide ; Marangoni; liposome;

   Sammanfattning : Methods based on self-assembly and self-organization for construction of lipid bilayer networks, consisting of vesicles (3-100 μm in diameter) connected by conduits (50-300 nm in diameter), have previously been developed. Control over network geometry, topology, content, and membrane composition has been demonstrated. LÄS MER

3. 7. Environment-Sensitive Multifunctional Drug Delivery Systems

   Författare :Jian Qin; Mamoun Muhammed; Marcus Textor; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Materials chemistry; Materialkemi;

   Sammanfattning : Drug delivery systems (DDS) with multiple functionalities such as environment-sensitive drug release mechanisms and visualization agents have motivated the biomedical community as well as materials chemists for more than a decade. This dissertation is concerned with the development of nanoparticles for multifunctional DDS  to tackle several crucial challenges in these complex systems, including polymeric nanospheres which respond to temperature change, superparamagnetic iron oxide nanoparticles/polymeric composite for magnetic resonance imaging contrast agents and drug carriers, immunoresponse of nanomaterials and injectable magnetic field sensitive ferrogels. LÄS MER

4. 8. 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

5. 9. Thermoresponsive cellulose-based composites by polymer modification

   Författare :Emma Larsson; Anna Carlmark Malkoch; Lian Hutchings; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Engineering; Kemiteknik;

   Sammanfattning : The interest in utilizing cellulose based materials has grown rapidly in recent years, due to the growing environmental concerns about utilizing fossil based material. One potential application of cellulose is in thermoresponsive materials, which are attracting attention due to their ability of altering conformation when exposed to changes in external temperature. LÄS MER

7. 10. 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