Spatial regimes in the dynamics of polyolefins: Self-motion

Arun Neelakantan; Janna K. Maranas

doi:10.1063/1.1629077

Spatial regimes in the dynamics of polyolefins: Self-motion

Arun Neelakantan
, Janna K. Maranas

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

The spatial dependence of dynamics in a series of polyolefins was investigated using molecular dynamics simulations. A crossover in dynamic behavior, which is characteristic of glass transition, was observed and it disappeared at high temperatures. The crossover was related to a shift from vibrational to relaxational motion, or a crossover from independent to cooperative dynamics. Results show that the spatial region characteristic of interchain packing is very important in interpreting polymer dynamics.

Original language	English (US)
Pages (from-to)	465-474
Number of pages	10
Journal	Journal of Chemical Physics
Volume	120
Issue number	1
DOIs	https://doi.org/10.1063/1.1629077
State	Published - Jan 1 2004

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1063/1.1629077

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abstract = "The spatial dependence of dynamics in a series of polyolefins was investigated using molecular dynamics simulations. A crossover in dynamic behavior, which is characteristic of glass transition, was observed and it disappeared at high temperatures. The crossover was related to a shift from vibrational to relaxational motion, or a crossover from independent to cooperative dynamics. Results show that the spatial region characteristic of interchain packing is very important in interpreting polymer dynamics.",

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AB - The spatial dependence of dynamics in a series of polyolefins was investigated using molecular dynamics simulations. A crossover in dynamic behavior, which is characteristic of glass transition, was observed and it disappeared at high temperatures. The crossover was related to a shift from vibrational to relaxational motion, or a crossover from independent to cooperative dynamics. Results show that the spatial region characteristic of interchain packing is very important in interpreting polymer dynamics.

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Spatial regimes in the dynamics of polyolefins: Self-motion

Abstract

All Science Journal Classification (ASJC) codes

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