Crystal nucleation kinetics of polyethylene on active centers

0432521 - FZÚ 2015 RIV NL eng J - Článek v odborném periodiku
Kožíšek, Zdeněk - Hikosaka, M. - Okada, K. - Demo, Pavel
Crystal nucleation kinetics of polyethylene on active centers.
Journal of Crystal Growth. Roč. 401, Sep (2014), 56-58. ISSN 0022-0248. E-ISSN 1873-5002
Grant CEP: GA ČR GAP108/12/0891
Institucionální podpora: RVO:68378271
Klíčová slova: nucleation * polyethylene * crystallization
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.698, rok: 2014

Model of nucleation on active centers is applied to formation of folded chain crystals of polyethylene at low supercooling. Nucleation rate and the total number of nuclei are determined by numerical solution of kinetic equations. Thermodynamic and kinetic parameters were chosen to get the coincidence with experimental data for the total number of nuclei and the size distribution of nuclei as a function of time. Nucleation rates for various cluster sizes and the exhaustion of active centers due to the phase transition process were determined. It is shown that the number of exhausted active centers, on which crystalline nuclei are formed, increases with time.
Trvalý link: http://hdl.handle.net/11104/0236860