Use of HMDS/hexane double layers for obtaining low cost selective membrane
da Silva, MLP; Demarquette, NR; Tan, IH
HERO ID
2861341
Reference Type
Journal Article
Year
2003
Language
English
| HERO ID | 2861341 |
|---|---|
| In Press | No |
| Year | 2003 |
| Title | Use of HMDS/hexane double layers for obtaining low cost selective membrane |
| Authors | da Silva, MLP; Demarquette, NR; Tan, IH |
| Journal | Cellulose |
| Volume | 10 |
| Issue | 2 |
| Page Numbers | 171-178 |
| Abstract | Sheets of paper commonly used for filtration were coated with double layers of HMDS ( hexamethyl disilazane) and n-hexane using a low pressure plasma reactor. The organic compounds formed a thin film with very good adhesion to the substrate; the process produced water-repellent surfaces, with apparent water-contact angles higher than 100degrees and water adsorption around 15 g/m(2). The paper porosity was not altered, indicating that the depositions were conformal. Preliminary tests to investigate the possibility of using the modified paper as a selective membrane for separation of water and organic-polar and non-polar compounds of different chain length were conducted. The non-polar compounds tested were: n-hexane, cyclohexane, heptane, dodecane, benzene and poly( dimethylsiloxane). The polar organic liquids were ethanol, 2-propanol, carbon tetrachloride, acetophenone and phenol. Three types of behaviour were observed: ( a) in the case of water/non-polar mixture, the non-polar compound passed through the modified paper whereas water did not; (b) in the case of acetophenone, phenol and carbon tetrachloride, neither the water nor the polar compound percolated through the modified paper; ( c) in the case of water/2-propanol or ethanol solution, it was observed that a minimum concentration of alcohol was necessary in order for both the alcohol and water to percolate through the paper; in this case the alcohol percolates first, followed by water. |
| Doi | 10.1023/A:1024099329956 |
| Wosid | WOS:000184046200009 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Scopus URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-0038162386&doi=10.1023%2fA%3a1024099329956&partnerID=40&md5=8248f665ff39e316b9acb53a4f616c4e |
| Is Public | Yes |
| Language Text | English |