DETERMINATION OF INTERFACIAL-TENSION OF POLYMER MELTS BY DYNAMIC SHEAR MEASUREMENTS

被引：64
|
作者：
GRAEBLING, D
MULLER, R
机构：
[1] Institut Charles Sadron (CRM-EAHP), F-67000 Strasbourg
来源：
COLLOIDS AND SURFACES | 1991年 / 55卷
关键词：
D O I：
10.1016/0166-6622(91)80085-3
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：
The linear viscoelastic behavior of two-phase polymer blends in the melt is characterized by high values of storage modulus at low frequencies and by long relaxation times. These rheological properties depend directly on the interfacial tension alpha between the two polymers. Dynamic shear measurements provide, therefore, a method to determine alpha without perturbation of the system. The frequency dependence of dynamic moduli could be accounted for with an emulsion model of two viscoelastic liquids. Experimental data for G' (omega) and G" (omega) on poly(dimethylsiloxane) (PDMS)/poly(oxyethylene-diol) (POE-DO) blends have been found to be in good accordance with the emulsion model and the value of interfacial tension found in the literature for this system.
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页码：89 / 103
页数：15
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