Depolymerization of nylon 6 waste fibers

被引：50

作者：

Shukla, SR ^{[1
]}

Harad, AM ^{[1
]}

Mahato, D ^{[1
]}

机构：

[1] Univ Bombay, Inst Chem Technol, Dept Fibers & Text Proc Technol, Bombay 400019, Maharashtra, India

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2006年 / 100卷 / 01期

关键词：

nylon; monomers; recycling; viscosity;

D O I：

10.1002/app.22775

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 depolymerization of nylon 6 was carried out with various solvents, such as formic acid, hydrochloric acid, and sulfuric acid, followed by heating under reflux for different times. From the polymer dissolved and refluxed in formic acid, degradation products with different ranges of molecular weights were collected by fractional precipitation, with small lots of distilled water added as a nonsolvent. The characterization of different fractions was carried out by the measurement of the viscosity-average molecular weight, the number-average molecular weight, and the number of amino end groups. The presence of the monomer, aminocaproic acid, was confirmed by thin-layer chromatography in the case of hydrochloric acid treated nylon 6. With a strongly acidic ion-exchange resin, the monomer was separated in its purest form, and the melting point was noted. (c) 2006 Wiley Periodicals, Inc.

引用

页码：186 / 190

页数：5