6533b850fe1ef96bd12a82d4

RESEARCH PRODUCT

Crystallizing polystyrene microgel colloids

Eckhard BartschAndreas StippChristian SinnI. WeberThomas Palberg

subject

Materials scienceScatteringKineticsHard spheresLight scatteringCondensed Matter::Soft Condensed MatterSolventShear (sheet metal)chemistry.chemical_compoundColloidchemistryChemical engineeringPolymer chemistryPolystyrenePhysics::Chemical Physics

description

Spherical microgel particles of sufficiently high degree of internal cross-linking and swollen in a good solvent in many respects behave quite similarly to hard-sphere colloids. Due to solvent uptake they can be refractive-index-matched and density-matched in suitable organic solvents. We present preliminary measurements of the crystallization kinetics of 1:10 cross-linked polystyrene microgel particles. We measured Bragg and small-angle light scattering of the solidifying shear melt. Two different scattering patterns, a set of Debye-Scherrer rings and a second ring pattern at small angles could be observed. We check for similarities and differences compared to previously investigated colloidal systems.

yearjournalcountryeditionlanguage
2007-08-09
https://doi.org/10.1007/3-540-46545-6_13