Sökning: "amphiphilic"

Visar resultat 6 - 10 av 129 avhandlingar innehållade ordet amphiphilic.

1. 6. Structure and dynamics of complex materials in the water-poor regime

   Författare :Sanna Gustavsson; Fysikalisk kemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hydration; cellulose; dissolution; sugar surfactant; hydrated crystals; structure; dynamics; phase diagram; fuel cell; pulsed-field-gradient PFG spin-echo NMR; Polarization Transfer solid state NMR; PXRD; GVS; TGA; amphiphilic;

   Sammanfattning : In the solid state, molecules are normally ordered in a specific structure. With time, and as a result of influence from the surroundings, solid materials can change their molecular and/or crystal structure and, as a consequence, obtain completely different properties. Water is particularly important in this respect. LÄS MER

3. 7. Synthesis, Characterisation and Properties of Biomimetic Biodegradable Polymers

   Författare :Fredrik Nederberg; Tim Bowden; Nicola Tirelli; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; biodegradable polymers; biomimetic; phospholipid-like; phosphorylcholine; amphiphilic; ionomer; hemocompatible; non-adhesive; water uptake; reduced protein adsorption; protein delivery; Kemi; Chemistry; Kemi;

   Sammanfattning : The acceptance of blood contacting implants creating favorable conditions in vivo is decisively determined by their interaction with proteins that mediate inter cellular interactions with synthetic substrates. Adsorbed proteins can activate blood cascade systems like coagulation and complement that may result in serious blood clots, and/or immunological reactions. LÄS MER

4. 8. Amphiphilic Polymers as Additives in Biomedical Polyurethanes. Surface Properties and Morphology

   Författare :Maria Kober; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; polymer micelles; phase separation; migration; poly ethylene oxide ; surface enrichment; morphology; polyurethane; additives; Surface modification; amphiphilic polymers; polymer blends; Polymer technology; biopolymers; Polymerteknik;

   Sammanfattning : The aim of this work was to achieve surface modification of two biomedical polyurethanes and one poly(urethane urea) through the addition of small amounts of amphiphilic copolymers in solution. The matrix polymers used were the poly(ether urethane)s Pellethane 2363-80AE (P80) and 2363-75D (P75) and a poly(ether urethane urea) similar to Biomer (PUUR). LÄS MER

5. 9. NA transmembrane domain : Amphiphilic drift to accommodate two functions

   Författare :Johan Nordholm; Robert Daniels; Ervin Fodor; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; influenza; IAV; neuraminidase; NA; transmembrane domain; TMD; secretory protein; ER-targeting sequence; ER-targeting sequence coding region; protein regulation; NS1; GALLEX; Biochemistry; biokemi;

   Sammanfattning : Neuraminidase (NA) is one of two major antigens on the surface of influenza A viruses. It is comprised of a single N-terminal transmembrane domain (TMD), a stalk domain, and a C-terminal enzymatic head domain that cleaves sialic acid, most notably to release new particles from the host cell surface. LÄS MER

7. 10. Effects of a Novel Amphiphilic Graft Copolymer on Ternary Mixtures of Surfactant, Water, and Oil

   Författare :Anna Holmberg; Fysikalisk kemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TRFQ; PFG NMR; molecular self-diffusion; phase behavior; viscosity; amphiphilic polymer; oil-continuous microemulsion; light scattering; Physical chemistry; Fysikalisk kemi;

   Sammanfattning : An amphiphilic graft copolymer, with hydrophilic poly(ethylene glycol) monomethyl ether side chains grafted onto a hydrophobic poly(dodecyl methacrylate) backbone, has been synthesized. The side chains are water soluble and the backbone is soluble in oils such as cyclohexane and isooctane. LÄS MER