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Published in: Cellulose 3/2010

01-06-2010

Hydrolytic stability of a series of lactam-based cationic bleach activators and their impact on cellulose peroxide bleaching

Authors: Jung Jin Lee, David Hinks, Sang-Hoon Lim, Peter Hauser

Published in: Cellulose | Issue 3/2010

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Abstract

A series of five cationic bleach activators containing lactam-based leaving groups of varying ring size was synthesized and characterized. The hydrolytic stability of each activator was determined via HPLC-based analysis of hydrolysis products, titration of available oxygen, and whiteness assessment of cellulosic fibers using a peroxide-activator bleaching system following solution storage for various times under controlled conditions. Aqueous alkaline solutions of each activator hydrolysed at different rates with the slowest rates observed with the ω-octalactam ring system, the largest ring size investigated, and the most rapid hydrolysis was found with a six-membered lactam ring based activator. The whiteness of cotton bleached with stored bleach activator solutions inversely correlated with the hydrolysis rate for each activator. The hydrolysis rate followed pseudo first order kinetics.

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Metadata
Title
Hydrolytic stability of a series of lactam-based cationic bleach activators and their impact on cellulose peroxide bleaching
Authors
Jung Jin Lee
David Hinks
Sang-Hoon Lim
Peter Hauser
Publication date
01-06-2010
Publisher
Springer Netherlands
Published in
Cellulose / Issue 3/2010
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-009-9390-1

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