✦ LIBER ✦

Poly(ethylene glycol)s catalyzed two-phase dehydrochlorination of poly(vinyl chloride) with potassium hydroxide

✍ Scribed by Lin Guo; Gaoquan Shi; Xuezhong Du; Chun Li; Yingqiu Liang

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 171 KB
Volume: 70
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19981219)70:12<2463::aid-app19>3.0.co;2-7

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✦ Synopsis

Poly(ethylene glycol)s [HO(CH 2 CH 2 O) n H, where n Ͼ 3] are highly active and selective in catalyzing dehydrochlorination of poly(vinyl chloride) in organicaqueous hydroxide two-phase systems. Their catalytic activity and stability are much higher than those of widely used quaternary ammonium or phosphonium compounds. Poly(vinyl chloride) can be extensively dehydrochlorinated within half an hour at room temperature. The products are polyacetylene-like and have long polyene sequences according to their UV/visible, FT-Raman, and FT-infrared spectra. They can be doped by iodine to conductive states, with conductivities of 1-4 S cm Ϫ1 .

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