ELASTIC PROPERTIES OF NETWORKS OF FRACTAL CLUSTERS

被引：12

作者：

CHAPLAIN, V

MILLS, P

DJABOUROV, M

机构：

[1] ESPCI,PHYS THERM LAB,CNRS,URA 857,PARIS,FRANCE

[2] UNIV PARIS 07,BIORHEOL & HYDRODYNAM PHYSICOCHIM LAB,CNRS,URA 343,F-75221 PARIS 05,FRANCE

来源：

COLLOID AND POLYMER SCIENCE | 1994年 / 272卷 / 08期

关键词：

COLLOIDAL GELS; FRACTAL CLUSTERS;

D O I：

10.1007/BF00658898

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Elastic properties of casein gels were followed by dynamic measurements for various volume fractions of casein micelles far above the percolation threshold. Elastic and loss storage moduli versus volume fractions obey a power law with an exponent close to 3. The previous theoretical models for networks made of a homogeneous packing of fractal flocs do not predict the observed behavior. A model is proposed to estimate the vectorial contribution to the network elasticity. This model is in agreement with our experimental results. The value of the fractal dimension of the flocs derived from this analysis is discussed as a function of the volume fraction of primary particles.

引用

页码：991 / 999

页数：9

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