BROWSE

Related Researcher

Author

Kwon, Young-Nam
Superior Membrane-based Advanced Research & Technology (SMART) Lab
Research Interests
  • Membrane, Reverse(Forward) osmosis, Membrane distillation, Hydrate-induced ice desalination

ITEM VIEW & DOWNLOAD

Interfacially synthesized chlorine-resistant polyimide thin film composite (TFC) reverse osmosis (RO) membranes

Cited 3 times inthomson ciCited 3 times inthomson ci
Title
Interfacially synthesized chlorine-resistant polyimide thin film composite (TFC) reverse osmosis (RO) membranes
Author
Hong, SungPyoKim, In-ChulTak, TaemoonKwon, Young-Nam
Keywords
Amide linkages; Amorphous structures; Chlorine stability; Cross linking agents; Imidization; Interfacial polymerization; Poly(amic acid); Polyimide film; Polyimide thin films; RO membrane; Semicrystallines; Tertiary amine; Thermal imidization; Transform infrared spectroscopy; Trimesoyl chloride
Issue Date
201301
Publisher
ELSEVIER SCIENCE BV
Citation
DESALINATION, v.309, no., pp.18 - 26
Abstract
Chlorine-resistant polyimide thin film composite (TFC) RO membranes were prepared via interfacial polymerization of m-phenylene diamine (MPD) and 1,2,4,5-benzene tetracarbonyl chloride (BTC) and subsequent thermal imidization. Thermogravimetric analysis, differential scanning calorimetry and attenuated total reflection-Fourier transform infrared spectroscopy confirmed that the use of a tertiary amine catalyst allowed the preparation of the polyimide films at below the glass transition temperature of the polysulfone support sublayer, thus preventing its degradation. The effects of annealing on the membranes performance were investigated. Increasing temperature and duration during the thermal treatment accelerated the imidization of the poly(amic acid) membranes and converted their amorphous structures to semi-crystalline structures, deteriorating their performance. The addition of a cross-linking agent, trimesoyl chloride (TMC), during the interfacial polymerization improved the membrane's performance. The polyimide thin film composite, reverse osmosis membranes prepared from MPD, BTC and TMC showed significantly enhanced chlorine resistance due to the elimination of chlorine-sensitive sites by the replacement of amide linkage with imide linkage.
URI
Go to Link
DOI
http://dx.doi.org/10.1016/j.desal.2012.09.025
ISSN
0011-9164
Appears in Collections:
UEE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU