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Unusual dynamical arrest in polymer grafted nanoparticles
A K Kandar1, S Srivastava, J K Basu
1Department of Physics, Indian Institute of Science, Bangalore 560 012, India.
Abstract:
We present results of temperature dependent measurements of dynamics of polymer grafted nanoparticles with high grafting density with star polymerlike morphology. We observed for the low grafting density and hence low functionality sample, a dynamically arrested state with lowering of temperature, similar to what was conjectured earlier. However the high grafting density sample shows liquidlike relaxation at all measured temperatures. Possible origin of dynamical arrest in the two grafting density sample is discussed.
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