Effect of different hot-treatment media on the properties of polyurethane based hollow fiber membrane
Meitian Liu · Tianjin Gongye Daxue xuebao · 2012
Polyurethane(PU) based hollow fiber membranes were prepared by melt-spinning method,and the influences of different hot-treatment media on the properties of PU based hollow fiber membranes were studied.The results show that with the increasing in theoretical draw ratio,the pure water flux(PWF) increased by hot-water treatment,but increased and then decreased by hot-air treatment.The PU based hollow fiber membrane treated by hot-water can improve the breaking elongation rate,but can improve the fracture strength treated by hot-air.In the same testing pressure,the PU based hollow fiber membrane treated by hot-water is easier to achieve stability than that treated by hot-air.