| 고분자 젤 농도변화에 의한 실리카 나노분말의 합성 |
| 김지경, 이상근, 권재율, 서금석1, 박성수1, 박희찬 |
부산대학교 재료공학부
1부경대학교 응용화학공학부 |
| Synthesis of Silica Nanopowder via Change in Polymer Gel Concentration |
| Ji-Kyung Kim, Sang-Geun Lee, Jae-Youl Kwon, Geum-Seok Seo1, Seong-Soo Park1, Hee-Chan Park |
School of Materials Science and Engineering, Pusan National University
1Division of Applied Chemical Engineering, Pukyong National University |
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| ABSTRACT |
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Nanoscale silica powder was synthesized from $SiO_2$ precursor solution using Tetraethyl Orthosilicate (TEOS) by polyacrylamide gel method. This process was of simplicity and provided ultrafine powders at relatively low calcination temperatures because polymer network could inhibit aggregation of $SiO_2$ powder. The particle size of Si02 powder was affected by the concentration of ammonium persulphate and N, N'-methylene-bis-acrylamide(BIS) in the gel precursor. The particle size decreased with increasing ammonium persulphate and was mininum size of 10 nm at 0.01 M. Also, the size decreased with increasing BIS concentration and was 5 nm at its concentration of 0.05 M. |
| Key words:
Silica, Nano powder, Precursor, Polyacrylamide gel |
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