Effect of Test Parameters on Sensitivity of Tensile Test Results for Greige Cotton Hydroentangled Nonwoven Fabric

Graphical abstract This research is an in-depth study into the optimization of tensile properties of hydro-entangled nonwoven fabrics made of greige cotton. The effect of five different testing parameters, weight, gauge length, speed of testing, angle to machine direction, and specimen width on the tensile properties of hydro-entangled nonwoven fabrics are tested. The parameters to express tensile properties include load at break, extension at break, tensile stress at break, tensile strain at break, Young’s modulus, and energy at break. The testing process was performed according to central composite design. The regression analysis and optimization analysis are used for data analysis. This research is an in-depth study into the tensile properties of hydro-entangled nonwoven fabrics made of greige cotton. The effect of five different testing parameters or sample characteristics, weight, gauge length, speed of testing, angle to machine direction, and specimen width, of hydro-entangled nonwoven fabrics made of greige cotton were correlated with load at break, extension at break, tensile stress at break, tensile strain at break, Young’s modulus, and energy at break. The regression equations with an average r2 of 0.82 demonstrated parameters’ positive and effective influence on tensile properties. The influence order of all testing parameters is gauge length = specimen width > speed. This analysis aims to study the effects of testing parameters or sample characteristics on tensile properties. It is hoped that this study can contribute a better understanding of the relationship between hydro-entangled nonwoven fabric mechanical performance and web formations, potentially promoting greige cotton applications.