Force-extension curves for a single polymer chain under varying solvent conditions

被引:24
作者
Maurice, RG [1 ]
Matthai, CC [1 ]
机构
[1] Univ Wales, Dept Phys & Astron, Cardiff CF2 3YB, S Glam, Wales
来源
PHYSICAL REVIEW E | 1999年 / 60卷 / 03期
关键词
D O I
10.1103/PhysRevE.60.3165
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
We show that Langevin dynamics can be used to obtain force-extension curves for a single polymer chain under varying solvent conditions. We find that the chains obey Hooke-type and Pincus regime behavior for Theta and good solvents. However, in poor solvents a coil-strand Coexistence is observed in the equilibrium state and this leads to a quite different type of deformation behavior: [S1063-651X(99)10309-X].
引用
收藏
页码:3165 / 3169
页数:5
相关论文
共 9 条
[1]   DYNAMICS OF ENTANGLED POLYMER-SOLUTIONS .1. ROUSE MODEL [J].
DEGENNES, PG .
MACROMOLECULES, 1976, 9 (04) :587-593
[2]  
Flory P. J., 1969, STAT MECH CHAIN MOL
[3]   MOLECULAR-DYNAMICS SIMULATION FOR POLYMERS IN THE PRESENCE OF A HEAT BATH [J].
GREST, GS ;
KREMER, K .
PHYSICAL REVIEW A, 1986, 33 (05) :3628-3631
[4]   Force-extension relation and plateau modulus for wormlike chains [J].
Kroy, K ;
Frey, E .
PHYSICAL REVIEW LETTERS, 1996, 77 (02) :306-309
[5]   STRETCHING OF A SINGLE TETHERED POLYMER IN A UNIFORM-FLOW [J].
PERKINS, TT ;
SMITH, DE ;
LARSON, RG ;
CHU, S .
SCIENCE, 1995, 268 (5207) :83-87
[6]   EXCLUDED VOLUME EFFECTS AND STRETCHED POLYMER-CHAINS [J].
PINCUS, P .
MACROMOLECULES, 1976, 9 (03) :386-388
[7]   Nonequilibrium relaxation of a stretched polymer chain [J].
Sheng, YJ ;
Lai, PY ;
Tsao, HK .
PHYSICAL REVIEW E, 1997, 56 (02) :1900-1909
[8]   DIRECT MECHANICAL MEASUREMENTS OF THE ELASTICITY OF SINGLE DNA-MOLECULES BY USING MAGNETIC BEADS [J].
SMITH, SB ;
FINZI, L ;
BUSTAMANTE, C .
SCIENCE, 1992, 258 (5085) :1122-1126
[9]   Monte Carlo simulations of a single polymer chain under extension above and below the Theta temperature [J].
Wittkop, M ;
Kreitmeier, S ;
Goritz, D .
PHYSICAL REVIEW E, 1996, 53 (01) :838-845