Hydrolysis Reaction of Poly(ethylene terephthalate) Using Ionic Liquids as Solvent and Catalyst

被引：81

作者：

Liu, Fusheng ^{[1
]}

Cui, Xiao ^{[1
]}

Yu, Shitao ^{[1
]}

Li, Zhuo ^{[1
]}

Ge, Xiaoping ^{[1
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Chem Engn, Qingdao 266042, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2009年 / 114卷 / 06期

关键词：

polyester; recycling; ionic liquid; hydrolysis; degradation; POLYETHYLENE TEREPHTHALATE; ETHYLENE-GLYCOL; WASTE; ACID; DEPOLYMERIZATION; TEMPERATURE; EFFICIENT; PRODUCTS; PET;

D O I：

10.1002/app.30981

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The hydrolysis of poly(ethylene terephthalate) (PET) was studied using ionic liquid 1-n-butyl-3-methylimidazolium chloride ([Bmim][Cl]) as solvent and acid-functionalized ionic liquid 1-methyl-3-(3-sulfopropyl)-imidazolium hydrogen sulfate ([HSO3-pmim][HSO4]) as catalyst. The effects of temperature, time, and dosages of solvent and catalyst on hydrolysis results were examined. Under the optimum conditions of m(PET) m(H2O) : m([Bmim][Cl]) : m([HSO3-pmim][HSO4]) = 3 4 : 6 : 0.6, reaction temperature 170 degrees C and time 4.5 h, the conversion of PET and the yield of terephthalic acid (TPA) were almost 100% and >= 88%, respectively. After easily separated from the product, the ionic liquids could be reused eight times without obvious decrease in the conversion of PET and yield of TPA. Hence, an environmental friendly strategy for chemical recycling of PET was developed. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 114: 3561-3565, 2009

引用

页码：3561 / 3565

页数：5

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