Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session V55: Polymer Crystallization III: Copolymer Crystallization, Intercrystalline Topology and Mechanical Properties
2:30 PM–5:30 PM,
Thursday, March 7, 2019
BCEC Room: 254B
Sponsoring Unit: DPOLY
Chair: Wenbing Hu, Nanjing University Rufina Alamo, Florida A&M and Florida State University
Abstract: V55.00011 : Effects of diffusion barriers on the temperature dependence of polymer crystallization rates*
4:54 PM–5:06 PM
Department of Polymer Science and Engineering, State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, 210023 Nanjing, China.
We employed kinetic Monte Carlo simulations of bulk lattice polymers to investigate the kinetics of polymer isothermal crystallization in a broad temperature range. Four diffusion barrier parameters were taken into consideration, i.e. the frictional barrier E_f induced by the leaving neighbors of monomers, the diffusion barrier E_r for sliding diffusion of polymers in the crystalline phase, the barriers of the transition from trans to gauche conformation and the reverse transition E_t and E_g, respectively. E_f affects the crystallization kinetic greatly at low temperatures. E_r affects less but appears more important at high temperatures than low temperatures. A larger E_t and E_g reduces significantly the crystallization rate at low temperatures. The results shed light onto the comprehension understanding of polymer crystallization kinetics at low temperatures.
*Thanks the financial support from National Natural Science Foundation of China！
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
1 Physics Ellipse, College Park, MD 20740-3844
Editorial Office 1 Research Road, Ridge, NY 11961-2701 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700