جامعة الكوت - University of kut - بحوث

السنة	عنوان البحث	نشر البحث
2017	Experimental Investigation on Rheological Characterization of ecovio® F Film C2203biopolymer Melts	Conference International Journal of Science and Research (IJSR)
shear[6] and [5]. The dynamic rheological measurements (oscillation method) is the most common deformation method to investigate the linear behavior of viscoelastic[5].This can be used to find the stability of material, give a clear significance of the sample behavior, and strength. Even though the elastically or viscous behavior predominant over the specific range of frequency. While its confirmed on sinusoidal strain or stress at variable frequency (ω) and the response must be follow the sinusoidal wave [7], that it was performed on the popular rheometer, also it offered rise to storage modulus, in stage with a deformity, and other parts losses modulus. Thus, these moduli are named as elastic modulus (G') and viscose or loss modulus (G"). The angle (δ) of deformation can be defined as a ratio of loss modulus to storage modulus; G  tan   …(1) G  Abstract: The rheological behavior and properties of polymers fluid are significantly concerned with their internal structure therefore it’s has been experimentally and numerically investigated for many of industry applications. This article of research studies the characterization of (ecovio® F Film C2203) biopolymer due to their characteristics and importance in different fields of health and environment. Two type of rheometers instruments have been used at different temperatures range (140 - 220 ˚C) to describe the rheological properties of the (ecovio® F Film C2203) biopolymer melts with various investigating mechanisms. The results were compared with the linear results of oscillatory measurements and non-linear results of steady-state method which provide the storage and the loss modulus of the (ecovio® F Film C2203) melting, and given the model of Cox-Merz. Likewise, in the measuring of a viscosity for the (ecovio® F Film C2203) at the higher shear rate, particularly at the excess temperature, one of the master problems was in the using of a capillary rheometer, because of the long chains of a molecule which led to the high viscosity. Keywords: ecovio® F Film C2203 biopolymert, thermo-rheological properties