콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Influence of impregnation of chitosan beads with cetyl trimethyl ammonium bromide on their structure and adsorption of congo red from aqueous solutions
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2009-12
- 저자명 우승한
- 학술지명 CHEMICAL ENGINEERING JOURNAL
- 발행처명 ELSEVIER SCIENCE SA
- 발행국가 해외
- 논문언어 한국어
- 전체저자수 4
논문 초록 (Abstract)
The effect of impregnation of chitosan (CS) beads with cetyl trimethyl ammonium bromide (CTAB), a cationic surfactant, on the structural organization of the beads was investigated using various techniqu es such as infrared spectroscopy, zeta potential, X-ray diffraction, transmission electron microscopy and scanning electron microscopy equipped with energy dispersive X-ray. Impregnation of chitosan b eads with this surfactant (CTAB) significantly increased adsorption ca pacity from 178.32 (0 wt% CTAB) to 373.29 mg/g (0.05 wt% CTAB) for adsor ption of congo red (CR) from an initial concentration of 1000 mg/l. The results of zeta potential analysis of CS beads impregnated with v arious CTAB concentrations indicated that zeta potential was not signifi cantly increased by CTAB impregnation up to 0.1%. Based on different characterization results, enhanced adsorption of CR onto CTAB-impregnated CS beads not only involves electrostati c interactions between CR molecules, and multiple functional groups of CS and positively charged head group of CTAB molecules, but al so involves significant hydrophobic interactions between the hydrop hobic tail of CTAB and hydrophobic moieties of CR molecules. (C) 2009 Elsevier B.V. All rights reserved.
