Dielectric relaxation of polyurethane biocomposites

被引：0
|
作者：
Musteata, V. E. [1 ]
Filip, D. [1 ]
Vlad, S. [1 ]
Macocinschi, D. [1 ]
机构：
[1] Petru Poni Inst Macromol Chem, Iasi 700487, Romania
来源：
OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS | 2010年 / 4卷 / 08期
关键词：
Dielectric relaxation; Polyurethane; Extracellular matrix; Biocomposites; COLLAGEN; DYNAMICS; WATER;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An experimental study using dielectric spectroscopy measurements is made on molecular motions as function of temperature and frequency of polyurethane biocomposites, based on poly(ester urethane) and extracellular matrix components (hydrolyzed collagen, elastin, hyaluronic acid, chondroitin sulfate). Relaxation parameters were evaluated from isothermal dielectric spectra in -1004+-30 degrees C temperature interval by applying empirical Havriliak-Negami function Relaxation times versus temperature were analysed for glass transition and secondary transitions by means of Arrhenius law and Vogel-Fulcher-Tammann-Hesse equation.
引用
收藏
页码：1187 / 1192
页数：6
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