Novel benzo-15-crown-5 functionalized α-olefin/CO terpolymers for membrane applications
✍ Scribed by Harm-Anton Klok; Peter Eibeck; Markus Schmid; Adnan S. Abu-Surrah; Martin Möller; Bernhard Rieger
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 585 KB
- Volume
- 198
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
The synthesis of a benzo‐15‐crown‐5 functionalized α‐olefin (4′‐(undec‐10‐enylcarboxylate)benzo‐15‐crown‐5, 5) and its terpolymerization with carbon monoxide and various α‐olefins are described. A decline of the glass transition temperatures (T~g~) of the corresponding terpolymers was observed upon incorporating compound 5 into the polymer main chain. Ion‐selective membranes were prepared by encapsulating the benzo‐15‐crown‐5 functionalized α‐olefin/CO terpolymers in a microporous polyethylene support. Preliminary ion‐transport experiments demonstrate the ability of these novel crown ether substituted polyketones to transport NaClO~4~ across the membranes. Adjusting the polarity of the polyketones via the length of the olefinic side chain offers a means to control the ion‐permeation‐rates.