Preparation and characterization of PEG-grafted silica particles using emulsion
- Authors
- Hwang, Yi-Jeong; Lee, Young-Ho; Oh, Chul; Jun, Young-Doo; Oh, Seong-Geun
- Issue Date
- May-2006
- Publisher
- ELSEVIER SCIENCE INC
- Keywords
- PEG; silica; sol-gel method; W/O emulsion
- Citation
- JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.12, no.3, pp.380 - 386
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
- Volume
- 12
- Number
- 3
- Start Page
- 380
- End Page
- 386
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/181500
- ISSN
- 1226-086X
- Abstract
- In this study, aimed at preparing PEG-grafted silica particles, PEGME-IPTES with a silane coupling agent was synthesized by the reaction of poly(ethylene glycol) methyl ether (PEGME) with 3-(triethoxysilyl)propyl isocyanate (IPTES). The molecular weight of PEGME was varied (350, 750, or 2000). By utilizing a sol-gel method in a W/O emulsion, both spherical silica particles and PEG-grafted silica particles were obtained. The syntheses of PEGME-IPTES and the PEG-grafted silica particles were confirmed using FT-IR spectroscopy. As the molecular weight of PEGME used in the synthesis of the PEGME-IPTES precursor increased, the amount of PEG grafted onto the surface of the silica particles increased. In addition, the surface areas of the PEG-grafted silica particles were smaller than that of the bare silica particles. The surface morphologies were characterized by FE-SEM, TGA and BET surface area measurements.
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