Sökning: "self-diffusion"

Visar resultat 16 - 20 av 73 avhandlingar innehållade ordet self-diffusion.

1. 16. NMR multicomponent self-diffusion studies of association phenomena in aqueous solution

   Författare :Johan Carlfors; Uppsala universitet; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

   Sammanfattning : .... LÄS MER

3. 17. NMR Self-Diffusion Studies of Surfactant and Polymer Systems. Methodology and Applications

   Författare :Björn Håkansson; Fysikalisk kemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; Fysikalisk kemi;

   Sammanfattning : The main focus of this thesis has been to explore how the PFG NMR technique for diffusion measurements can be used to obtain useful information from various systems. The investigated systems have one thing in common; they belong to the general field of surface and colloid chemistry. LÄS MER

4. 18. Properties of Asphaltenes with emphasis on NMR self-diffusion as the investigating technique

   Författare :Jenny-Ann Östlund; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; amphiphilic; diffusion; oil; mixture analysis; CORE; stability; NMR; pulsed gradient spin echo; light scattering; XPS; asphaltene; chemical interactions;

   Sammanfattning : Asphaltenes are high-molecular weight, highly aromatic molecules that have a strong tendency to aggregate. Asphaltenes are found in oil and may, if they form particles, cause problems during oil production and handling. LÄS MER

5. 19. Self-Diffusion and Microstructure of Some Ionic Liquids in Bulk and in Confinement

   Författare :Andrei Filippov; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry of Interfaces; Gränsytors kemi; Smarta maskiner och material FOI ; Smart machines and materials AERI ;

   Sammanfattning : An ionic liquid (IL) is a salt, which usually is in the liquid state at normal temperature and pressure. The properties of ILs can be adjusted for various processes and applications by choosing different combinations of ions. Similar to other salts, ILs contain only ions with positive (cations) and negative (anions) charges in equal proportions. LÄS MER

7. 20. NMR Diffusion Studies of Association in Surfactant Systems Inclusion Complexes, Micellar Solutions and Microemulsions

   Författare :Markus Nilsson; Fysikalisk kemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; host-guest complexation; gemini surfactant; cyclodextrin; bolaform surfactant; self-diffusion NMR; pluronic; bicontinuous microemulsion; polydispersity; boosting effect;

   Sammanfattning : The aim of this thesis has been to investigate self-diffusion behavior of host-guest complex, microemulsion and polymer solution. Pulsed Field Gradient NMR (PFG-NMR) was shown to provide detailed molecular information in all system studied. LÄS MER