Synthesis, characterization and reverse osmosis performance of poly(amide-sulfonamide)s

Wing Hong CHAN*, Suei Yee Lam-Leung, Ching Fai Ng, Shu Sen Wang

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

14 Citations (Scopus)


Poly(amide-sulfonamide)s 1-4 were synthesized by low-temperature solution polycondensation of diamino monomers 5 and 6 with isophthaloyl chloride/terephthaloyl chloride in N,N-dimethylacetamide (DMAc). The polymers were adequately characterized for their properties. Membranes were fabricated from PASA 2 under different casting conditions by varying the casting solution composition, evaporation temperature and evaporation time. The reverse osmosis (RO) tests for these membranes were performed with 1000 ppm aqueous sodium chloride feeds at 20 to 40 kg cm-2) operating pressure. Membranes showed salt rejections of up to 97.9% at a flux of over 11.9 cm per day. The RO performances of the membranes remained unchanged after treatment with dilute acid, alkali and oxidizing agent.

Original languageEnglish
Pages (from-to)4377-4381
Number of pages5
Issue number20
Publication statusPublished - Oct 1993

Scopus Subject Areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

User-Defined Keywords

  • membrane materials
  • poly(amide-sulfonamide)s
  • reverse osmosis
  • synthesis
  • thermal and chemical stability


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