Hölzl, Thomas and Wittkop, Markus and Kreitmeier, Stefan and Trautenberg, Hans L. and Göritz, Dietmar (1997) Structural aspects of the glass transition in three-dimensional polymer melts. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 93 (12). pp. 2185-2193. ISSN 0956-5000
Full text not available from this repository.Abstract
We discuss structural aspects of three-dimensional polymer melts undergoing glass transition. Our Monte Carlo study is based on the well known bond-fluctuation model including van der Waals interaction and bond-length potential. Results are presented for different cooling rates and a wide range of temperatures. The glass-transition temperature, T-g, was determined by the significant change in various static and dynamic quantities, such as the static structure factor of individual polymer chains and the incoherent scattering function. Below T-g, the latter is characterized by division into a Debye-like short-time regime and two separate time regimes with stretched-exponential behaviour. Further investigation by means of block density distribution analysis revealed an inhomogeneous, non-Gaussian distribution of mass below T-g. A direct proof for the existence of cavities and clusters of effective monomers has been given by visualization via a two-dimensional projection technique.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MOLECULAR-DYNAMICS SIMULATION; MONTE-CARLO SIMULATION; LATTICE MULTICHAIN SYSTEMS; BULK AMORPHOUS POLYMERS; FLUCTUATING BOND MODEL; SHORT-TIME DYNAMICS; LOCAL CHAIN MOTION; DIELECTRIC-RELAXATION; PLASTIC-DEFORMATION; SELF-DIFFUSION |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Dietmar Göritz |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 27 Apr 2023 06:33 |
| Last Modified: | 27 Apr 2023 06:33 |
| URI: | https://pred.uni-regensburg.de/id/eprint/50751 |
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