4.7 Article

Efficient mineralization of ethylene-tetrafluoroethylene copolymer in superheated water with permanganate

期刊

POLYMER DEGRADATION AND STABILITY
卷 190, 期 -, 页码 -

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2021.109621

关键词

Fluoropolymer; Decomposition; Superheated water; Permanganate; Oxidation

资金

  1. Japan Society for the Promotion of Science [JP18H03402]

向作者/读者索取更多资源

The copolymer of ethylene and tetrafluoroethylene (ETFE) can efficiently decompose into F- and CO2 when treated with KMnO4 in superheated water, reducing the reaction temperature by 60 degrees Celsius compared to using supercritical water. Additionally, ETFE requires higher temperature for mineralization compared to its isomer poly(vinylidene fluoride) (PVDF).
Copolymer of ethylene and tetrafluoroethylene (ETFE) was treated in superheated water with KMnO4. ETFE efficiently decomposed to F- and CO2. Specifically, when ETFE (30 mg) was treated for 6 h with aqueous KMnO4 (52.7 mM; the molar amount was 1.7-fold excess of that of the fluorine atoms in ETFE) at 320 degrees C, the yields of F- and CO2 were 92 +/- 1% and 73 +/- 8%, respectively, and the total organic carbon content in the reaction solution was reduced to 4% of the carbon atom number in the initial ETFE. When the reactivity of ETFE was compared with that of poly(vinylidene fluoride) (PVDF), that is, an isomer of ETFE, ETFE required higher temperature to achieve mineralization. The present approach can reduce the reaction temperature allowing efficient mineralization of ETFE by 60 degrees C, compared to the previous method using supercritical water with dioxygen. (C) 2021 Elsevier Ltd. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据