Modeling of Stress Relaxation Modulus for a Nanocomposite Biosensor by Relaxation Time, Yield Stress, and Zero Complex Viscosity

This paper presents a simple equation for the stress relaxation modulus, G(t), of nanocomposite biosensor and blend films by relaxation time, yield stress, zero complex viscosity, and power-law index. The correctness of the advanced model is assessed by the measured results for the examples containing poly (ethylene oxide) (PEO), poly (lactic acid) (PLA) and carbon nanotubes. Furthermore, the roles of whole factors in G(t) are justified to approve the predictability of the advanced model. The model’s predictions correctly fit the experimental facts and whole factors reveal acceptable trends. All parameters including yield stress, relaxation time, zero complex viscosity, power-law index, and the width of the transition section directly affect G(t). The sensible results validate the advanced model, providing a simple procedure for approximating and optimizing G(t) in blend and nanocomposite systems.