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Unusual dynamical arrest in polymer grafted nanoparticles

机译:聚合物接枝纳米颗粒中异常的动态阻滞

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摘要

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.
机译:我们提出了温度依赖性的聚合物接枝纳米粒子具有星形聚合物样形态的高接枝密度动力学的动力学测量结果。我们观察到低接枝密度和低功能性样品,即随着温度降低而动态停止的状态,这与之前的推测相似。但是,高接枝密度的样品在所有测量温度下均表现出类似液体的松弛。讨论了两种接枝密度样品中动态阻滞的可能来源。

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