onr:"swepub:oai:DiVA.org:uu-145381"
Search: onr:"swepub:oai:DiVA.org:uu-145381" > Phase Phenomena in ...
- 1 of 1
- Previous record
- Next record
- To hitlist
Phase Phenomena in Polymer Networks : Empirical Studies on the Influence of Hydrophobicity, Charge Density and Crosslinks on Macroion-Induced Phase Transitions in Polyelectrolyte Gels
-
- Andersson, Martin, 1978- (author)
- Uppsala universitet,Institutionen för farmaci,Farmaceutisk Fysikalisk Kemi
-
- Hansson, Per (thesis advisor)
- Uppsala universitet,Institutionen för farmaci
-
- Piculell, Lennart, Professor (opponent)
- Lund, Physical Chemistry
- (creator_code:org_t)
- ISBN 9789155480011
- Uppsala : Acta Universitatis Upsaliensis, 2011
- English 53 s.
- Series: Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Pharmacy, 1651-6192 ; 137
- Doctoral thesis (other academic/artistic)
Abstract
Subject headings
Close
- The thesis concerns polyelectrolyte gels in contact with oppositely charged proteins and surfactant micelles, and includes of four papers (I-IV). In paper I confocal Raman spectroscopy was introduced as a method to trace micelles and investigate the structure of gel-surfactant complexes, in phase separated gel spheres. In paper II, the binding of surfactants to microspheres (~50-100 µm) was investigated by means of a micromanipulator-assisted microscopy method. The two surfactants were found to display qualitative difference respect to degree of swelling, surfactant distribution in the gels, and the difference is discussed in terms of absence/presence of hydrophobic attraction to the polyelectrolyte gel network. Kinetics of volume change in gels were analyzed. Aggregation numbers of micelles in polystyrenesulfonate (PSS) solutions, obtained from fluorescence quenching measurements, are presented. In paper III, phase behaviour, protein assembly and diffusion, was studied in PSS gel microspheres. Interpretation of results was aided by measurements of osmotic swelling of individual gel networks, and by combining the results with studies of protein diffusion in macroscopic (cm-sized) gel spheres. Complexes formed were further analyzed with small angle x-ray spectroscopy. In paper IV phase behaviour of mixed ionic/nonionic surfactant micelles is investigated in cm-sized gel spheres. The coexistence of three phases, the formation of dense shells in the bulk of the gels and other phenomena are described for the first time, and the results are presented along with discussion on the charge-density of spherical micelles and of network induced hysteresis effects in gels. The composition and microstructure of phases are investigated by confocal Raman spectroscopy and small-angle x-ray scattering respectively. The results are interpreted with aid of highly detailed theoretical model calculations.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Farmaceutiska vetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Pharmaceutical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Keyword
- Gel
- microgel
- microsphere
- polystyrenesulfonate
- polyacrylate
- polyacrylicacid
- DoTAB
- DoTAC
- CTAB
- CTAC
- network
- polyelectrolyte
- complex salt
- self assembly
- phase behaviour
- hysteresis
- thermodynamic
- core-shell
- lysozyme
- cytochrome c
- microscopy
- micromanipulator
- elastomer
- elastic
- protein
- surfactant
- phase behaviour
- sorting
- PHARMACY
- FARMACI
- Physical chemistry
- Fysikalisk kemi
Publication and Content Type
- vet (subject category)
- dok (subject category)
Find in a library
- Phase Phenomena in Polymer Networks Empirical Studies on the Influence of Hydrop... (Search the publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Andersson, Marti ...
- Hansson, Per
- Piculell, Lennar ...
- About the subject
-
- MEDICAL AND HEALTH SCIENCES
- MEDICAL AND HEAL ...
- and Basic Medicine
- and Pharmaceutical S ...
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Chemical Science ...
- and Physical Chemist ...
- Parts in the series
- Digital Comprehe ...
- By the university
- Uppsala University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
