Connecting 1D and 2D Confined Polymer Dynamics to Its Bulk Behavior via Density Scaling
| Autor: | Simone Napolitano, Roksana Winkler, Karolina Adrjanowicz, Marian Paluch, Andrzej Dzienia |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Organic Chemistry Dynamics (mechanics) Virologie médicale 02 engineering and technology Polymer Métallurgie 010402 general chemistry 021001 nanoscience & nanotechnology Virologie générale 01 natural sciences Density scaling 0104 chemical sciences Chimie des solides Inorganic Chemistry Chimie organique chemistry Chemical physics Materials Chemistry 0210 nano-technology |
| Zdroj: | ACS macro letters, 8 (3 |
| Popis: | Under confinement, the properties of polymers can be much different from the bulk. Because of the potential applications in technology and hope to reveal fundamental problems related to the glass-transition, it is important to realize whether the nanoscale and macroscopic behavior of polymer glass-formers are related to each other in any simple way. In this work, we have addressed this issue by studying the segmental dynamics of poly(4-chlorostyrene) (P4ClS) in the bulk and upon geometrical confinement at the nanoscale level, in either one- (thin films on Al substrate) or two- (within alumina nanopores) dimensions. The results demonstrate that the segmental relaxation time, irrespective of the confinement size or its dimensionality, can be scaled onto a single curve when plotted versus γ /T with the same single scaling exponent, γ = 3.1, obtained via measurements at high pressures in bulk. The implication is that the macro- and nanoscale confined polymer dynamics are intrinsically connected and governed by the same underlying rules. SCOPUS: ar.j info:eu-repo/semantics/published |
| Databáze: | OpenAIRE |
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