Segmental dynamics of a near-infinitely diluted component polymer chain in polymer blends
발표자
()
초록
내용
The reorientation of polymer-tethered fluorophores close to the glass transition was utilized to examine the segmental dynamics of a near-infinitely diluted component polymer in its blending partner chains. It is discovered that the dynamics of an isolated component follow that of the other component's temperature dependence with a horizontal shift corresponding to a change in the glass transition temperature, which may be caused by a local composition of 10% isolated component. On the other hand, dynamic heterogeneity, another important dynamic feature close to the glass transition, demonstrates that the local dynamic environment of an isolated component can become either as heterogeneous as a component that is more naturally heterogeneous or more heterogeneous than both. These findings highlight the need to consider both the dynamic modulation of one component by another component as well as the chain connectivity in order to comprehend the segmental dynamics of an isolated component in polymer blends.