Lattice model for cold and warm swelling of polymers in water

被引：20

作者：

Bruscolini, P

Casetti, L

机构：

[1] Politecn Torino, INFM, I-10129 Turin, Italy

[2] Politecn Torino, Dipartimento Fis, I-10129 Turin, Italy

来源：

PHYSICAL REVIEW E | 2000年 / 61卷 / 03期

关键词：

D O I：

10.1103/PhysRevE.61.R2208

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 define a lattice model for the interaction of a polymer with water. We solve the model in a suitable approximation. In the case of a nonpolar homopolymer, for reasonable values of the parameters, the polymer is found in a noncompact conformation at low temperature; as the temperature grows, there is a sharp transition towards a compact state, then, at higher temperatures, the polymer swells again. This behavior closely reminds one of that of proteins that are unfolded at both low and high temperatures.

引用

页码：R2208 / R2211

页数：4