Abstract/Details

Kinetics of phase separation and pattern formation in polyelectrolyte and salt solutions


2008 2008

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Abstract (summary)

A quest of understanding complex behavior of flexible polyelectrolyte has been made in this thesis. A phase separating system, sodium polystyrene sulfonate and barium chloride, (NaPSS-BaCl2) has been studied with different quench depths around critical temperature. It was found that the complexity of polyelectrolyte system manifests itself as a non classical behavior of phase separation kinetics. One of the striking results was that even in deep temperature quenches, the induction time (lag time) has been always observed. Dynamic light scattering data revealed the formation of aggregates has an intermediate step at length scale of 50nm where the size did not increase appreciably as the population of the continuously increased. In the other part of the thesis, sodium polystyrene sulfonate and sodium chloride, NaPSS-NaCl solutions, can reveal very interesting patterns when a drop of mixture is placed on glass and evaporated. The crystallization of NaCl was mediated with the amount of NaPSS, temperature and humidity. Patterns can be modified and controlled by tuning these parameters.

Indexing (details)


Subject
Condensed matter physics;
Materials science
Classification
0611: Condensed matter physics
0794: Materials science
Identifier / keyword
Applied sciences, Pure sciences, Pattern formation, Phase separation, Polyelectrolytes, Salt solutions
Title
Kinetics of phase separation and pattern formation in polyelectrolyte and salt solutions
Author
Kaya, Deniz
Number of pages
105
Publication year
2008
Degree date
2008
School code
0118
Source
DAI-B 69/12, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780549916048
Advisor
Muthukumar, Murugappan
Committee member
Dinsmore, Antony D.; Menon, Narayanan; Weis, Robert M.
University/institution
University of Massachusetts Amherst
Department
Physics
University location
United States -- Massachusetts
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3337017
ProQuest document ID
304566801
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/304566801
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