Perfluoropolyether synthesis in liquid carbon dioxide by hexafluoropropylene photooxidation

被引：26

作者：

Bunyard, WC ^{[1
]}

Romack, TJ ^{[1
]}

DeSimone, JM ^{[1
]}

机构：

[1] Univ N Carolina, Dept Chem, Venable & Kenan Labs, Chapel Hill, NC 27599 USA

来源：

MACROMOLECULES | 1999年 / 32卷 / 24期

关键词：

D O I：

10.1021/ma981588l

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Hexafluoropropylene (HFP) photooxidation reactions were conducted with varying HFP concentrations in carbon dioxide. Parallel concentrations were conducted in bulk HFP and perfluorocyclobutane (PCB) for comparison. The photooxidation reactions were irradiated under an oxygen head pressure of ca. 2 bar for 15 h at -40°C. All reactions were homogeneous throughout the irradiation period and produced water-white liquids with isolated yields ranging from 16 to 48%. Product analysis by 19F NMR provided information on the polymer composition, number-average molecular weight, and peroxide content.

引用

页码：8224 / 8226

页数：3

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