Abstract: The viscosity of spinning dope influences the morphology and performance of hollow fiber membrane. It is one of important parameters in preparing hollow fiber membrane. It was studied how its viscosity is in flaenced by the content of PSF、PVP、acetone and its temperature respectively. The results show that the viscosity of spinning dope improves when the content of PSF and PVP increases, while its viscosity decreases with increase of acetone content and temperature. Fiber hollow membrane with ideal morpholog...