Relating monomer to centre-of-mass distribution functions in polymer solutions

被引：43

作者：

Krakoviack, V ^{[1
]}

Hansen, JP ^{[1
]}

Louis, AA ^{[1
]}

机构：

[1] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England

来源：

EUROPHYSICS LETTERS | 2002年 / 58卷 / 01期

关键词：

D O I：

10.1209/epl/i2002-00605-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A relationship between the measurable monomer-monomer structure factor, and the centre-of-mass (CM) structure factor of dilute or semi-dilute polymer solutions is derived from Ornstein-Zernike relations within the polymer reference interaction site model (PRISM) formalism, by considering the CM of each polymer as an auxiliary site and neglecting direct correlations between the latter and the CM and monomers of neighbouring polymers. The predictions agree well with Monte Carlo data for self-avoiding walk polymers, and are considerably more accurate than the predictions of simple factorization approximations.

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页码：53 / 59

页数：7

相关论文

共 15 条

[1] Accurate effective pair potentials for polymer solutions [J].

Bolhuis, PG ;

Louis, AA ;

Hansen, JP ;

Meijer, EJ .

JOURNAL OF CHEMICAL PHYSICS, 2001, 114 (09) :4296-4311

[2] DERIVATION OF AN INTEGRAL-EQUATION FOR PAIR CORRELATION-FUNCTIONS IN MOLECULAR FLUIDS [J].

CHANDLER, D .

JOURNAL OF CHEMICAL PHYSICS, 1973, 59 (05) :2742-2746

[3] OPTIMIZED CLUSTER EXPANSIONS FOR CLASSICAL FLUIDS .2. THEORY OF MOLECULAR LIQUIDS [J].

CHANDLER, D ;

ANDERSEN, HC .

JOURNAL OF CHEMICAL PHYSICS, 1972, 57 (05) :1930-+

[4]

Doi M., 1986, The Theory of Polymer Dynamics

[5] Structure and thermodynamics of colloid-polymer mixtures: A macromolecular approach [J].

Fuchs, M ;

Schweizer, KS .

EUROPHYSICS LETTERS, 2000, 51 (06) :621-627

[6] Macromolecular theory of solvation and structure in mixtures of colloids and polymers [J].

Fuchs, M. ;

Schweizer, K.S. .

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 2001, 64 (2 I) :215141-215141

[7] SMALL-ANGLE SCATTERING OF RANDOM COIL POLYMER-SOLUTIONS [J].

KOYAMA, R .

MACROMOLECULES, 1981, 14 (05) :1299-1303

[8]

KOYAMA R, 1980, MAKROMOL CHEM, V181, P1987

[9] Star polymers viewed as ultrasoft colloidal particles [J].

Likos, CN ;

Lowen, H ;

Watzlawek, M ;

Abbas, B ;

Jucknischke, O ;

Allgaier, J ;

Richter, D .

PHYSICAL REVIEW LETTERS, 1998, 80 (20) :4450-4453

[10] Can polymer coils be modeled as "soft colloids"? [J].

Louis, AA ;

Bolhuis, PG ;

Hansen, JP ;

Meijer, EJ .

PHYSICAL REVIEW LETTERS, 2000, 85 (12) :2522-2525