摘要
采用相转化法制备了F2 4的疏水微孔膜 ,并对F2 4和PVDF微孔膜的机械性能以及疏水性等方面进行了对比 .结果表明 ,F2 4微孔膜在拉伸时的应变以及断裂伸长率约为PVDF微孔膜的 6～ 9倍 ;其接触角 (77 4°)也大于PVDF膜的接触角 (6 6 7°) .尽管膜蒸馏的数据显示F2 4微孔膜的蒸馏通量尚不及PVDF膜 ,但通过调节各项制膜参数 ,F2
A new asymmetric hydrophobic membrane,composed of the copolymer of polytetra-fluoroethylenme and poly(vinyliden fluoride) (i.e.F2.4),has been fabricated via phase-inversion process.Some physical characteristics,such as mechanical properties and hydrophobicity,have been tested and compared with PVDF membrane.Stretching experimental data indicated that F2.4 membrane was about 6～9 times as large as PVDF membrane in extension ratio and breaking elongation percentage.Contact angle of the former(77.4°) was bigger than that of the latter(66.7°),too.In this paper though membrane distillation flux of F2.4 was lower than that of PVDF under the same situations,F2.4 membrane will be improved by optimizing fabrication condition.
出处
《膜科学与技术》
CAS
CSCD
北大核心
2003年第3期36-39,45,共5页
Membrane Science and Technology
