Concentration and Temperature Dependent Swelling Behavior of Thermoresponsive Ionic Microgels Using Zero Average Contrast
Ionic microgels are a class of intriguing soft and deformable colloids with an effective pair potential that crosses over from Yukawa-like at large distances to a soft Hertzian repulsive interaction at short distances. A recent experimental-theoretical study using static and dynamic light scattering (PRL, 2012, 109, 048302) on ionic microgels of PNIPAM co PAA has provided evidence for significant changes in the swelling of microgel particle already in the fluid phase at much lower volume fractions than closed packing. These results are in contrast to our previous results from Zero Average Contrast (ZAC) experiments on neutral poly(N-isopropylacrylamide) (PNIPAm) microgels, where we have demonstrated that the size of the microgels remains almost constant in the fluid phase and only slightly decreases above closed packing. Given the importance of a detailed knowledge of the volume fraction and temperature dependence of the particle size and structure at high densities, we propose to perform SANS experiments under ZAC conditions using a mixture of hydrogenated and deuterated ionic microgels at different concentrations from the fluid to the glassy regime.
Please note that you will need to login with your ILL credentials to download the data.
Download DataThe recommended format for citing this dataset in a research publication is in the following format:
MOHANTY Priti Sundar; NOEJD Sofi; OBIOLS RABASA Marc; SCHURTENBERGER Peter and SCHWEINS Ralf. (2013). Concentration and Temperature Dependent Swelling Behavior of Thermoresponsive Ionic Microgels Using Zero Average Contrast. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-10-1301
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.