Influence of Mechanical Properties of Nanoparticles on Macrocrack Formation

被引：44

作者：

Pauchard, Ludovic ^{[1
]}

Abou, Berengere ^{[2
,3
]}

Sekimoto, Ken ^{[2
,3
,4
]}

机构：

[1] Univ Paris 06, CNRS, UMR 7608, Lab Fluides Automat & Syst Therm, F-75252 Paris 05, France

[2] CNRS, UMR 7057, Lab Mat & Syst Complexes, F-75700 Paris, France

[3] Univ Paris Diderot, Paris, France

[4] CNRS, UMR7083, F-75700 Paris, France

来源：

LANGMUIR | 2009年 / 25卷 / 12期

关键词：

CRACKING; MODEL;

D O I：

10.1021/la9001384

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present an experimental investigation of drying suspensions of both hard and soft nanolatex spheres. The crack formation is examined as a function of the proportion of hard and soft deformable particles, leading to tunable elastic properties of the drying film. In our experimental systems, no crack formation could be observed below an onset value of the proportion in hard spheres phi similar to 0.45. During the drying process, the mass of films with various compositions in hard and soft spheres is measured as a function of time. The results suggest that the soft particles undergo deformation that releases the internal stresses.

引用

页码：6672 / 6677

页数：6

共 21 条

[1] MECHANICAL STABILITY OF SOL-GEL FILMS [J].

ATKINSON, A ;

GUPPY, RM .

JOURNAL OF MATERIALS SCIENCE, 1991, 26 (14) :3869-3873

[2] Hierarchical crack pattern as formed by successive domain divisions. I. Temporal and geometrical hierarchy [J].

Bohn, S ;

Pauchard, L ;

Couder, Y .

PHYSICAL REVIEW E, 2005, 71 (04)

[3]

Brinker C.J., 1990, Sol-Gel Science, P453

[4] Scaling approach of the convective drying of a porous medium [J].

Coussot, P .

EUROPEAN PHYSICAL JOURNAL B, 2000, 15 (03) :557-566

[5] Flow and fracture in drying nanoparticle suspensions [J].

Dufresne, ER ;

Corwin, EI ;

Greenblatt, NA ;

Ashmore, J ;

Wang, DY ;

Dinsmore, AD ;

Cheng, JX ;

Xie, XS ;

Hutchinson, JW ;

Weitz, DA .

PHYSICAL REVIEW LETTERS, 2003, 91 (22)

[6]

Ghosal S, 1999, J AM CERAM SOC, V82, P513, DOI 10.1111/j.1151-2916.1999.tb01795.x

[7] AN EXPERIMENTAL-STUDY OF CRACKING INDUCED BY DESICCATION [J].

GROISMAN, A ;

KAPLAN, E .

EUROPHYSICS LETTERS, 1994, 25 (06) :415-420

[8]

HURAUX K, 2008, MACROMOLECULES UNPUB

[9]

HURAUX K, 2008, THESIS PARIS U 6 FRA

[10]

Johnson K.L., 1985, Contact Mechanics, DOI [10.1017/CBO9781139171731, DOI 10.1017/CBO9781139171731]

← 1 2 3 →