| 학회 |
한국화학공학회 |
| 학술대회 |
2010년 가을 (10/21 ~ 10/22, 대전컨벤션센터) |
| 권호 |
16권 2호, p.1182 |
| 발표분야 |
고분자 |
| 제목 |
In situ Preparation of Fe3O4-graft-Poly(acrylic acid) composite in Supercritical CO2 and Its Adsorption Capacity of Water-Soluble Dyes |
| 초록 |
Herein we report the synthesis of Fe3O4-graft-poly(acrylic acid) nanocomposite via dispersion polymerization of acrylic acid in supercritical carbon dioxide in presence of surface modified magnetite nanoparticles. Firstly, Fe3O4 nanoparticles were surface modified with a silane-coupling agents namely 3-(trimethoxysilyl)propylmethacrylate. Secondly, polyacrylic acid (PAA) chains were successfully grafted from the surface of Fe3O4, resulting in the formation of core-shell nanostructures. The obtained product was confirmed for chemical and physical structure using Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and transmission electron microscopy (TEM). The analysis results of magnetic property indicated that composites were superparamagnetic. The adsorption of some dyes onto PAA-coated magnetite nanoparticles was investigated in phosphate buffer (pH 2-10) at 25°C. It indicated that the adsorption capacity increased with the increased in solution pH and with the increased in Fe3O4 contents in composites. |
| 저자 |
Van Hoa Nguyen1, Yuvaraj Haldorai2, Quang Long Pham1, Tongqiang Zong2, 심재진1
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| 소속 |
1School of Display and Chemical Engineering, 2Yeungnam Univ. |
| 키워드 |
F3O4; composite
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| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
