Effects of Coagulation Conditions on Tensile Properties of Regenerated Cellulose Fibers

The effects of coagulation conditions on tensile properties of the regenerated cellulose fibers prepared by wet-spinning from NaOH/thiourea/urea (8:6.5:8 by weight) aqueous solvent were investigated by tensile tester, X-ray diffraction (XRD), and scanning electron microscope (SEM). The results show that the tensile properties of the as-spun fibers change with the coagualtion concentration, temperature, and time. When the spinning solution is coagulated in 10% H2SO4/12.5% Na2SO4 aqueous solution, the as-spun fibers have a typical structure of cellulose Ⅱ, a circular cross-section, and homogeneous morphological structure.