中国物理B ›› 2013, Vol. 22 ›› Issue (10): 106103-106103.doi: 10.1088/1674-1056/22/10/106103
• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇 下一篇
王晓东, 欧阳洁, 苏进, 周文
Wang Xiao-Dong (王晓东), Ouyang Jie (欧阳洁), Su Jin (苏进), Zhou Wen (周文)
摘要: A modified phase-field model is proposed for simulating the isothermal crystallization of polymer melts. The model consists of a second-order phase-field equation and a heat conduction equation. It obtains its model parameters from the real material parameters and is easy to use with tolerable computational cost. Due to the use of a new free energy functional form, the model can reproduce various single crystal morphologies of polymer melts under quiescent conditions, including dendritic, lamellar branching, ring-banded, breakup of ring-banded, faceted hexagonal, and spherulitic structures. Simulation results of isotactic polystyrene crystals demonstrate that the present phase-field model has the ability to give qualitative predictions of polymer crystallization under isothermal and quiescent conditions.
中图分类号: (Theory of crystal structure, crystal symmetry; calculations and modeling)