Bleaching cellulosic fibers via pre-sorption of N-[4-(triethylammoniomethyl)-benzoyl]-butyrolactam chloride

• Published in: Cellulose (London) Vol. 17; no. 4; pp. 849 - 857
• Main Authors: Xu, Changhai, Hinks, David, Shamey, Renzo
• Format: Journal Article
• Language: English
• Published: Dordrecht Dordrecht : Springer Netherlands 01.08.2010; Springer Netherlands; Springer Nature B.V
• Subjects: Bamboo; Bioorganic Chemistry; Bleach activator; Bleaches; Bleaching; Cations; cellulose; Cellulose fibers; Ceramics; Chemical industry; Chemistry; Chemistry and Materials Science; Composites; Freundlich isotherm; Glass; Hydrogen peroxide; Natural Materials; Organic Chemistry; Peracid; Physical Chemistry; Polymer Sciences; Sodium perborate; Sorption; Sustainable Development; Sorption; Bleach activator; Peracid; Hydrogen peroxide; Cellulose; Freundlich isotherm
• ISSN: 0969-0239; 1572-882X
• DOI: 10.1007/s10570-010-9412-z

The sorption of a novel cationic bleach activator, N-[4-(Triethylammoniomethyl)benzoyl]-butyrolactam Chloride (TBBC), was measured on regenerated bamboo fiber. At 25 °C near neutral pH, the sorption rate of TBBC onto the fiber was initially rapid and equilibrium was reached within 20 min. Adsorption equilibria experiments followed a Freundlich isotherm. At the sorption equilibrium, bleaching was initiated by addition of sodium perborate to liberate hydrogen peroxide, which reacted with TBBC to generate a peracid that is a more kinetically active oxidant than peroxide. A sorption-activation model was developed that supports the enhanced bleaching of cellulosic fibers using cationic bleach activators under neutral to alkaline conditions.