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Development of a simple CZE method for the analysis of an industrial cationizing reagent and its hydrolysis products
Author(s) -
Schöftner Rainer,
Pfeifer Angelika,
Buchberger Wolfgang
Publication year - 2002
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/1615-9314(20020601)25:8<507::aid-jssc507>3.0.co;2-#
Subject(s) - simple (philosophy) , reagent , hydrolysis , chemistry , chromatography , computer science , process engineering , biochemical engineering , organic chemistry , engineering , philosophy , epistemology
In the textile industry 3‐chloro‐2‐hydroxypropyltrimethylammonium chloride (CHPT) is used to introduce cationic groups into carbohydrate fabrics. In this way, the repulsion forces during the dyeing process with anionic dyes are overcome and dyeing is possible without or with only small amounts of added salt. The investigation of the reaction kinetics, in particular the hydrolysis of the reagent, requires an analytical separation method for the determination of CHPT, the formed epoxide, and the hydrolysis products. For this reason a CE method was developed, optimized, and validated. Buffer systems for indirect UV detection based on creatinine as visualization reagent were used. To enhance the resolution between the comigrating ions CHPT and 2,3‐dihydroxypropyltrimethylammonium (diol), the influence of α‐ and β‐cyclodextrins was studied. This new CE method was applied to investigate the reaction kinetics of the hydrolysis of CHPT in aqueous sodium hydroxide at different temperatures, different sodium hydroxide concentrations and aqueous tetramethylammonium hydroxide. In addition, CE‐MS experiments were carried out in order to identify the reaction products during the hydrolysis. This new robust CE method has the potential of being used to monitor the above mentioned compounds in their industrial applications.