A STUDY OF THE PHOTODEGRADATION OF FLUORESCENT WHITENING AGENTS APPLIED TO WOOL, USING REAL-TIME FLUORESCENCE SPECTROSCOPY

被引：7

作者：

COLLINS, S

DAVIDSON, RS

机构：

[1] The Chemical Laboratory, The University of Kent, Canterbury

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1994年 / 77卷 / 2-3期

关键词：

D O I：

10.1016/1010-6030(94)80054-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Real-time fluorescence spectroscopy has been used to follow the photodegradation of four stilbene-based fluorescent whitening agents (FWAS) and two pyrazoline FWAs. The degradation of the FWAs is preceded by an induction period which is attributed to the wool protecting the FWAs by reaction of its cystyl residues with any photogenerated singlet oxygen. Oxidation of the cystyl residues opens up the way to allow reaction of wool residues with the stilbene FWAs via a reductive process and for degradation of the pyrazolines via a singlet oxygen-mediated process.

引用

页码：277 / 282

页数：6

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