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Reverse osmosis membranes from aromatic polymers

✍ Scribed by Shigeyoshi Hara; Koh Mori; Yutaka Taketani; Takashi Noma; Masao Seno

Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 853 KB
Volume: 21
Category: Article
ISSN: 0011-9164
DOI: 10.1016/s0011-9164(00)80315-x

No coin nor oath required. For personal study only.

✦ Synopsis

A new reverse osmosis membrane composed of the following aromatic polymer containing benzimidazolone ring was studied.

(PBIL)

Lonsdale's permeability parameters of PBIL (e.g., PI/P, = 21.3 x IO3 g/cm3) show its excellent potential as permselective membrane material. Asymmetric membranes were successfully prepared from PBIL by the conventional phase-inversion method. A typical example of the basic membrane performances is as follows; water flux, 35 l/m2 h and salt rejection, 99.5'k determined under the pressure of 80 kg/cm' using 1 oA NaCl solution at 36°C. The PBIL membrane was characterized by its excellent chemical and thermal resistances, especially against acid, alkali and the oxidative atmospheres. These features suggest that the

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