Structure and dynamics of ring polymers

被引:92
作者
Brown, S [1 ]
Szamel, G [1 ]
机构
[1] Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA
关键词
D O I
10.1063/1.475927
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We study the equilibrium structure and dynamics of unconcatenated unknotted polymer rings in the melt. In accordance with earlier studies we find that rings in the melt are more compact than linear chains. We show that rings interpenetrate less and, perhaps as a result, diffuse faster than linear chains. Ring diffusion is faster for all ring sizes studied, the largest ring having numbers of monomers approximately ten times greater than the entanglement crossover of linear chains. (C) 1998 American Institute of Physics.
引用
收藏
页码:4705 / 4708
页数:4
相关论文
共 25 条
[1]  
Bird R.B., 1987, DYNAMICS POLYM LIQUI, V2
[2]   THE BOND FLUCTUATION METHOD - A NEW EFFECTIVE ALGORITHM FOR THE DYNAMICS OF POLYMERS IN ALL SPATIAL DIMENSIONS [J].
CARMESIN, I ;
KREMER, K .
MACROMOLECULES, 1988, 21 (09) :2819-2823
[3]   CONJECTURES ON THE STATISTICS OF RING POLYMERS [J].
CATES, ME ;
DEUTSCH, JM .
JOURNAL DE PHYSIQUE, 1986, 47 (12) :2121-2128
[4]   VISCOELASTICITY OF A FLUID OF DYNAMICALLY DISORDERED HARMONIC MACROMOLECULES [J].
CHATTERJEE, AP ;
LORING, RF .
JOURNAL OF CHEMICAL PHYSICS, 1995, 103 (11) :4711-4722
[5]   REPTATION OF A POLYMER CHAIN IN PRESENCE OF FIXED OBSTACLES [J].
DEGENNES, PG .
JOURNAL OF CHEMICAL PHYSICS, 1971, 55 (02) :572-+
[6]  
Doi M., 1986, The theory of polymer dynamics
[7]   RHEOLOGICAL BEHAVIOR OF STAR-SHAPED POLYMERS [J].
FETTERS, LJ ;
KISS, AD ;
PEARSON, DS ;
QUACK, GF ;
VITUS, FJ .
MACROMOLECULES, 1993, 26 (04) :647-654
[8]   CHAIN ENTANGLEMENTS .1. THEORY [J].
FIXMAN, M .
JOURNAL OF CHEMICAL PHYSICS, 1988, 89 (06) :3892-3911
[9]   CHAIN ENTANGLEMENTS .2. NUMERICAL RESULTS [J].
FIXMAN, M .
JOURNAL OF CHEMICAL PHYSICS, 1988, 89 (06) :3912-3918
[10]   Mode-coupling theory of the slow dynamics of polymeric liquids: Fractal macromolecular architectures [J].
Fuchs, M ;
Schweizer, KS .
JOURNAL OF CHEMICAL PHYSICS, 1997, 106 (01) :347-375