Abstract
Commercial polysulfone (PSf) membranes were crosslinked with a β-cyclodextrin-poly (propyleneimine) (β-CD-PPI) conjugate which had β-CD pendant arms using trimesoyl chloride (TMC) by interfacial polymerization. The morphology and physicochemical properties of the nanofiltration membranes were characterized using Fourier transform infrared/attenuated total reflectance (FT-IR/ATR) spectroscopy, scanning electron microscopy (SEM), atomic force microscopy (AFM), and cross-flow filtration system. Water-contact angle, water-intake capacity, and rejection capacities of the membranes were evaluated. The β-CD-G4 (generation 4)-PPI-PSf and β-CD-G3 (generation 3)-PPI-PSf membranes both exhibited high humic acid rejection of 72% as compared to the commercial PSf which exhibited 57%. The modified membranes were also more hydrophilic (36°to 41°) than PSf (76°). These results suggest that β-CD-PPI nanostructures are promising materials for the synthesis of membranes for the removal of humic acid from water.
| Original language | English |
|---|---|
| Pages (from-to) | 4428-4439 |
| Number of pages | 12 |
| Journal | Journal of Applied Polymer Science |
| Volume | 130 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 15 Dec 2013 |
Keywords
- dendrimers
- hyperbranched polymers and macrocycles
- membranes
- nanostructured polymers
ASJC Scopus subject areas
- General Chemistry
- Surfaces, Coatings and Films
- Polymers and Plastics
- Materials Chemistry