Rheology of Carbon Nanotube Networks During Gelation

被引：39

作者：

Chen, D. T. N. ^{[1
]}

Chen, K. ^{[1
]}

Hough, L. A. ^{[2
]}

Islam, M. F. ^{[3
,4
]}

Yodh, A. G. ^{[1
]}

机构：

[1] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

[2] Rhodia Inc, Complex Fluids Lab, Bristol, PA 19007 USA

[3] Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA

[4] Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA

来源：

MACROMOLECULES | 2010年 / 43卷 / 04期

基金：

美国国家科学基金会;

关键词：

PARTICLE TRACKING MICRORHEOLOGY; CROSS-LINKING; POLYMER;

D O I：

10.1021/ma902230a

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 report measurements of gelling rigid rod networks composed of a semidilute dispersion of surfactant-stabilized carbon nanotubes. Microrheology is employed to follow the rheological evolution of the suspension from a semidilute Solution of unbonded tubes to a bonded gel network with finite yield stress. The rheological data at various time intervals during gelation is readily collapsed onto a single lime-cure superposition master curve. A theoretical model based on the crossing probability of rods confined to finite volumes is developed to account for network elasticity. Model predictions compare well with computer simulation and experiments as a function of nanotube volume fraction(1) and cure time.

引用

页码：2048 / 2053

页数：6

共 26 条

[1] TIME CURE SUPERPOSITION DURING CROSS-LINKING [J].

ADOLF, D ;

MARTIN, JE .

MACROMOLECULES, 1990, 23 (15) :3700-3704

[2] EXCLUDED VOLUME AND ITS RELATION TO THE ONSET OF PERCOLATION [J].

BALBERG, I ;

ANDERSON, CH ;

ALEXANDER, S ;

WAGNER, N .

PHYSICAL REVIEW B, 1984, 30 (07) :3933-3943

[3] Rheological microscopy: Local mechanical properties from microrheology [J].

Chen, DT ;

Weeks, ER ;

Crocker, JC ;

Islam, MF ;

Verma, R ;

Gruber, J ;

Levine, AJ ;

Lubensky, TC ;

Yodh, AG .

PHYSICAL REVIEW LETTERS, 2003, 90 (10) :4

[4] Methods of digital video microscopy for colloidal studies [J].

Crocker, JC ;

Grier, DG .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1996, 179 (01) :298-310

[5] Two-point microrheology of inhomogeneous soft materials [J].

Crocker, JC ;

Valentine, MT ;

Weeks, ER ;

Gisler, T ;

Kaplan, PD ;

Yodh, AG ;

Weitz, DA .

PHYSICAL REVIEW LETTERS, 2000, 85 (04) :888-891

[6] A THEORETICAL BASIS FOR VISCOELASTIC RELAXATION OF ELASTOMERS IN THE LONG-TIME LIMIT [J].

CURRO, JG ;

PINCUS, P .

MACROMOLECULES, 1983, 16 (04) :559-562

[7]

Dasgupta BR, 2002, PHYS REV E, V65, DOI 10.1103/PhysRevE.65.051505

[8]

DEGENNES PG, 1990, SCALING CONCEPTS POL

[9]

DIDONNA BA, ARXIVCONDMAT0703418V

[10] Theoretical and computational studies of carbon nanotube composites and suspensions: Electrical and thermal conductivity [J].

Foygel, M ;

Morris, RD ;

Anez, D ;

French, S ;

Sobolev, VL .

PHYSICAL REVIEW B, 2005, 71 (10)

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