Structural arrest in dense star-polymer solutions

被引：103

作者：

Foffi, G

Sciortino, F

Tartaglia, P

Zaccarelli, E

Lo Verso, F

Reatto, L

Dawson, KA

Likos, CN

机构：

[1] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[2] Univ Roma La Sapienza, INFM, Ctr Stat Mech & Complex, I-00185 Rome, Italy

[3] Univ Milan, Ist Nazl Fis Mat, I-20133 Milan, Italy

[4] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

[5] Univ Coll Dublin, Irish Ctr Colloid Sci & Biomat, Dept Chem, Dublin 4, Ireland

[6] Univ Dusseldorf, Inst Theoret Phys 2, D-40225 Dusseldorf, Germany

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.90.238301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dynamics of star polymers is investigated via extensive molecular and Brownian dynamics simulations for a large range of functionality f and packing fraction eta. The calculated isodiffusivity curves display both minima and maxima as a function of eta and minima as a function of f. Simulation results are compared with theoretical predictions based on different approximations for the structure factor. In particular, the ideal glass transition line predicted by mode-coupling theory is shown to exactly track the isodiffusivity curves, offering a theoretical understanding for the observation of disordered arrested states in star-polymer solutions.

引用

页数：4

共 41 条

[21] Reversible thermal gelation in star polymers: An alternative route to jamming of soft matter
Loppinet, B
Stiakakis, E
Vlassopoulos, D
Fytas, G
Roovers, J
[J]. MACROMOLECULES, 2001, 34 (23) : 8216 - 8223
[22] DYNAMIC CRITERION FOR FREEZING OF COLLOIDAL LIQUIDS
LOWEN, H
PALBERG, T
SIMON, R
[J]. PHYSICAL REVIEW LETTERS, 1993, 70 (10) : 1557 - 1560
[23] LONG-TIME SELF-DIFFUSION COEFFICIENT IN COLLOIDAL SUSPENSIONS - THEORY VERSUS SIMULATION
LOWEN, H
SZAMEL, G
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 1993, 5 (15) : 2295 - 2306
[24] DISORDER-ORDER TRANSITIONS IN SOFT-SPHERE POLYMER MICELLES
MCCONNELL, GA
GAST, AP
HUANG, JS
SMITH, SD
[J]. PHYSICAL REVIEW LETTERS, 1993, 71 (13) : 2102 - 2105
[25] Melting of ordered arrays and shape transitions in highly concentrated diblock copolymer solutions
McConnell, GA
Gast, AP
[J]. MACROMOLECULES, 1997, 30 (03) : 435 - 444
[26] Predicting disorder-order phase transitions in polymeric micelles
McConnell, GA
Gast, AP
[J]. PHYSICAL REVIEW E, 1996, 54 (05) : 5447 - 5455
[27] Multiple glassy states in a simple model system
Pham, KN
Puertas, AM
Bergenholtz, J
Egelhaaf, SU
Moussaïd, A
Pusey, PN
Schofield, AB
Cates, ME
Fuchs, M
Poon, WCK
[J]. SCIENCE, 2002, 296 (5565) : 104 - 106
[28] PUSEY P, 1991, LIQUIDS FREEZING GLA
[29] NEW, THERMODYNAMICALLY CONSISTENT, INTEGRAL-EQUATION FOR SIMPLE FLUIDS
ROGERS, FJ
YOUNG, DA
[J]. PHYSICAL REVIEW A, 1984, 30 (02): : 999 - 1007
[30] THEORY OF SIMPLE CLASSICAL FLUIDS - UNIVERSALITY IN THE SHORT-RANGE STRUCTURE
ROSENFELD, Y
ASHCROFT, NW
[J]. PHYSICAL REVIEW A, 1979, 20 (03): : 1208 - 1235

← 1 2 3 4 5 →