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Removal of pyridine from water by pervaporation using crosslinked and filled natural rubber membranes
Author(s) -
Singha N. R.,
Ray S. K.
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.35659
Subject(s) - membrane , natural rubber , selectivity , carbon black , vulcanization , pyridine , materials science , pervaporation , chemical engineering , polymer chemistry , filler (materials) , composite material , chemistry , permeation , organic chemistry , catalysis , engineering , biochemistry
Natural rubber (NR) of grade RSS4 was efficiently cured (crosslinked) by using sulfur: accelerator weight ratio of 1 : 4. This was further compounded with high abrasion grade carbon black filler (grade N330) with three different doses, that is, 5, 10, and 20 wt % of rubber to form three different filled and crosslinked membranes designated as NR5, NR10, and NR20, respectively. These filled rubber membranes and one unfilled but efficiently cured membrane, that is, NR0, were used for pervaporative removal of low concentration of pyridine from water. The filled membranes were found to show higher pyridine selectivity but lower flux than the unfilled membrane. All of these membranes showed reasonably good range of flux and pyridine selectivity. Among all of the used membranes, NR5‐filled membrane yielded high pyridine selectivity (122) with reasonable thickness normalized flux (2.2 kg m −2 h −1 mμ) at 40°C for 0.5 wt % of pyridine in water. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012