5Wijman J G. Phase-separation phenomena in solution of polysul- fone in mixture of solyent and a nonsolvent: relationship with membrane formation [J]. Polymer, 1985,26(10) : 1539-1545.
6Broens L, Koenhen D M, Smolders C A. On the mechanism of formation of asymmetric ultra and hype-filtration membranes [J]. Desalination, 1977,22(1-3): 205-219.
7Cahn J W. Phase separation by spinodal decomposition in isotro- pic systems [J]. Journal of chemistry physics, 1965,42(1) : 93-99.
8Bonyadi S, Chung T S. Highly porous and macrovoid-free PVDF hollow fiber membranes for membrane distillation by a solvent-dope solution co-extrusion approach [J]. Journal of Mem- brane Science, 2009, 331(1-2): 66-74.
9Bottino A, Camera-Roda G, Capannelli G, et al. The forma- tion of microporous polyvinylidene difluoride membranes by phase separation [J]. Journal of Membrane Science, 1991, 57 (1): 1-20.
10Yeow M L, Liu Y T, Li K. Preparation of porous PVDF hollow fibre membrane via a phase inversion method using lithium per- chlorate (LiC104) as an additive [J]. Journal of Membrane Sci- ence, 2005, 258: 16-22.