APPROACHES TO PREPARE TFC POLYAMIDE MEMBRANES BY COATING DIAMINE DURING, AND/OR POST FORMATION OF ASYMMETRIC MEMBRANES AND THEIR PERFORMANCES

作者：Joshi R N; Singh K; Bhattacharya A^*

来源：Brazilian Journal of Chemical Engineering, 2011, 28(3): 457-465.

• Membrane
• Thin film composite
• 1,3-phenylene diamine
• Gelation bath
• Salt rejection

Thin film composite membranes were prepared by using1,3-phenylene diamine in the gelation bath as well as in coating conditions. The cross-sectional view of the membranes shows different patterns for membranes prepared in a water-bath (Mem- I) and a diamine-containing water bath (Mem-II). The thin film composite membranes prepared using a diamine bath and coating (Mem-III) had improved salt rejecting ability but low volume flux. The performances of the salt rejection follows the order Na(2)SO(4) > NaCl > MgSO(4) > MgCl(2), as expected. The salt separation performances of the membranes made with higher concentration of 1,3 phenylene diamine follow the order Mem-IIIb > Mem-I > Mem-IIb. For membranes made with low concentration of 1,3-phenylene diamine, the salt separation follows the same trend, (Mem-IIIa > Mem-IIa).

• 出版日期2011-9
• 单位海洋化工研究院有限公司