Polyelectrolytes - assembly, interfacial, and solution properties

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FågelbroHus, Värmdö, 23-26/9 2008

For directions, see "Hitta hit" on the Fågelbrohus webpage. Click "Bil" or "Taxi", depending on your preferences.

Course responsible: Andra Dedinaite
Phone: 08 - 790 99 05 or 0768 - 64 00 39
Examination: Written answers to tasks provided during the course.

We recommend that the students are given 8 ECTS credits for the course, even though the decision ultimately lies with the student's examiner.

Registration


To register send an e-mail to Andra Dedinaite. The deadline for registration is August 15.
The total number of participants is limited to about 30, and in case the course turns very popular, the priority will be given to the students that are enrolled in Chalmers Soft Matter Graduate school.

Topics


The purpose of the course is to provide insight into properties of polyelectrolytes in solution, at interfaces and in assemblies with oppositely charged surfactants. The course will discuss:
  •  Self-assembly of surfactants
  • Polyelectrolyte conformation in solution
  • Thermodynamics of polyelectrolyte-surfactant association
  • Association between hydrophobically modified polyelectrolytes and surfactants, as well as association between bottle-brush polyelectrolytes and surfactants
  • Phase diagrams of polyelectrolyte-surfactant mixtures
  • The importance of non-equilibrium effects in polyelectrolyte-surfactant mixtures
  • Polyelectrolyte complexes
  • Layer-by-layer deposition of polyelectrolytes
  • Adsorption of surfactants, polyelectrolytes and their mixtures
  • Small-angle scattering techniques for studying surfactants, polyelectrolytes and their mixtures
  • NMR as applied to polyelectrolyte and polyelectrolyte-surfactant systems
  • Fluorescence techniques as applied to polyelectrolyte-surfactant systems
  • Rheology of polyelectrolyte-surfactant mixtures
  • Density functional theory and simulation methods applied to polyelectrolyte-surfactant mixtures
  • Responsive surfaces in technology and Nature

Program

23 September 2008


11:00 – 11:15     Welcome and introduction to the course (AD)
11:15-12:00     Self-assembly of surfactant in bulk solution, basic principles I (MB)
Thermodynamics of self-assembly. Chain length and salt effects on critical micelle concentration.

12:00-13:10     Lunch


13:10-13:55     Self-assembly of surfactant in bulk solution, basic principles II (MB)
Size and shape of surfactant aggregates. Effects of curvature.

13:55-14:40     Polyelectrolyte conformation in bulk solution (AD)
Persistence length, salt and charge effects, Manning condensation

14:40-15:25     Introduction to small-angle scattering techniques (MB)
SLS, SAXS and SANS, contrast, form factor, structure factor, wave vector, different regimes                            in the scattering curve. Determination of Mw, Rg, shape, cross-section Rg

15:25-16:10     Studying micelles and polyelectrolytes in solution with small-angle scattering (MB)        Small-angle scattering/diffraction. Contrast matching. Direct and indirect methods of                                    analysis.

16:10-16:30     Coffee break

16:30-17:15     Polyelectrolyte-surfactant association in bulk, basic principles (IV)
thermodynamic model, binding isotherms
17:15-18:00     Polyelectrolyte-surfactant association in bulk, and at air-liquid interfaces non-         equilibrium aspects (IV)

18:15-    Dinner… sauna…
 

24 September 2008


7:00- 8:45    Breakfast

9:00-9:45     Introduction to NMR (IF)
9:45-10:30     Studying polyelectrolyte-surfactants with NMR (IF)

10:30-10:50     Coffee break

10:50-11:35     Introduction to fluorescence experiments (PH)
11:35-12:20     Studying polyelectrolyte-surfactants with fluorescence spectroscopy (PH)

12:20-13:30     Lunch

13:30-14:15     Interactions between HM-polyelectrolytes and surfactants (LP)
14:15-15:00     Interactions between bottle brush polyelectrolytes and surfactants (PC)

15:00-15:20     Coffee break

15:20-16:05     Introduction to the rheology of polyelectrolyte-surfactant mixtures (BN)
16:05-16:50    Rheo-small-angle light scattering. (BN)
Examining structural changes of polyelectrolyte systems under the influence of shear flow.

18:00-     Dinner on the sea.

 

25 September 2008


7:00- 8:45    Breakfast

9:00-9:45     Understanding polyelectrolyte-surfactant systems using phase diagrams I (LP)
9:45-10:30     Understanding polyelectrolyte-surfactant systems using phase diagrams II (LP)

10:30-10:50 Coffee break

10:50-11:35     Introduction to density functional theory (DFT) and simulation methods (JF)
11:35-12:20     Theoretical predictions of polyelectrolytes at surfaces and macroions (JF)

12:20-13:30 Lunch

13:30-14:15     Theoretical predictions of polyelectrolyte mediated surface and macroion interactions (JF)
14:15-15:00     Theoretical predictions of polyelectrolyte complexes (JF)
15:00-15:45 Formation of polyelectrolyte complexes, experimental observations (IV)

18:00-    Course Dinner


26 September 2008


7:00- 8:45    Breakfast


9:00-9:45     Surfactant adsorption (PC)
9:45-10:30     Polyelectrolyte adsorption (PC)

10:30-10:50 Coffee break

10:50-11:35     Surfactant association with preadsorbed polyelectrolyte layers I (AD)
11:35-12:20     Adsorption of polyelectrolyte-surfactant complexes (AD)

12:20-13:10     Lunch

13:10-13:55     Layer-by-layer deposition of polyelectrolyte multilayers, theoretical aspects (PC)
13:55-14:40     Layer-by-layer deposition of polyelectrolyte multilayers, experimental and application aspects (AD)

14:40-15:00 Coffee break

15:00-15:45     Responsive surface coatings (IV)
    Temperature – responsive systems
15:45-16:30     Responsive surfaces – the way of Nature (AD)
Introduction to protein-carbohydrate interactions, a responsive surface constructs used by Nature.


Lecturers

BN    Bo Nyström, University of Oslo
AD     Andra Dedinaite, KTH
MB     Magnus Bergström, KTH
PC     Per Claesson, KTH
IV     Imre Varga, ELTE, Lorand Eötvös University, Budapest
IF     Istvan Furu, KTH
PH    Per Hansson, UU
LP    Lennart Picullell, LU
JF     Jan Forsman, LU
Last modified: January 13, 2009
Responsible for this page: Per Sillrén

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