Influence of Layered-Silicates on the Phase Separated Morphology of PS
K Yurekli, Alamgir Karim, Eric J. Amis, R Krishnamoorti
The influence of added nanometer thick layered-silicates on the phase-separated morphology of a near critical blend of PS and PVME was examined. Thin films of the blend with 0.8 vol % of the nanoscale particles were examined by atomic force microscopy as a function of quench depth obtained in a single experiment by applying a temperature gradient combinatorial method. The layered-silicates, depending on their effective disk diameters, influence the development of phase separated structures. For the blends with small disk diameter (30 nm and 0.5 mm) layered-silicates, a pinning of the domain sizes and a concomitant increase in the number of phase separated domains and the presence of a higher fraction of near circular domains are observed. On the other hand, for layered-silicates with large disk diameters (10 mm), the nanoparticles do not to affect the morphology of the phase separated structure and possibly accelerate the phase separation kinetics.
, Karim, A.
, Amis, E.
and Krishnamoorti, R.
Influence of Layered-Silicates on the Phase Separated Morphology of PS, Macromolecules, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852253
(Accessed November 30, 2023)