期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 349, 期 1-3, 页码 29-34出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfa.2009.07.048
关键词
Hydrogel; Nanocomposite magnetic properties; pH responsive; Bioseparation
资金
- Kyung Hee University [KHU20080481]
- National Research Foundation of Korea [핵06A1101] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Hydrogel magnetite nanocomposite (HMNC) was fabricated by in situ development of magnetite nanoparticles in polyacrylamide (PAM) hydrogel. The formation of magnetite nanoparticles and their magnetic properties were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, and super conducting quantum interference device. The average particle size was 3-5nm as demonstrated by transmission electron microscopy. The thermal property of HMNC was determined by thermo-gravimetric analysis. It was found that HMNC had a lower thermal stability at the initial decomposition temperature and higher thermal stability at thermal decomposition temperature. It was also found that HMNC showed pH sensitive behavior which is not present in plain hydrogel, and the HMNC prepared with a 100% iron salt solution showed a high protein adsorption characteristic at pH 7.0. (C) 2009 Elsevier B. V. All rights reserved.
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