Effect of chain stiffness on the morphology of polyelectrolyte complexes. A Monte Carlo simulation study

被引：38
作者：
Narambuena, C. F. [1 ,2 ]
Leiva, E. P. M. [1 ]
Chavez-Paez, M. [2 ]
Perez, E. [2 ]
机构：
[1] Univ Nacl Cordoba, Dept Matemat & Fis, Fac Ciencias Quim, RA-5000 Cordoba, Argentina
[2] Univ Autonoma San Luis Potosi, Inst Fis, San Luis Potosi 78290, Slp, Mexico
来源：
POLYMER | 2010年 / 51卷 / 14期
关键词：
Polyelectrolyte complex; Morphology; Simulation; WEAKLY CHARGED POLYELECTROLYTES; PERSISTENCE LENGTH; DNA; CONDENSATION; ADSORPTION; CHITOSAN; SURFACE; CATIONS;
D O I：
10.1016/j.polymer.2010.04.065
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
We have employed Monte Carlo simulations and a coarse grain model in order to analyze the final structure and morphology of complexes arising from the interaction between fully-flexible polycations and polyanions with different chain stiffness. Different morphologies, like globules, toroids and rods, are obtained depending on chain stiffness. It was observed that longer chains yield more frequently toroids than rods, as compared with shorter chains. However, the size of toroids does not depend entirely on the chain length. This suggests that the final structure of the toroids is highly dependent on the intrinsic rigidity of chain rather than on the electrostatic contributions. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3293 / 3302
页数：10
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