화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of the Korean Industrial and Engineering Chemistry, Vol.15, No.4, 402-406, June, 2004
Export Citation
Polyacrylamide-co-acrylic acid를 이용하여 제조한 nanometer-sized silver-ethylene glycol colloid의 안정화
Stabilization of Nanometer-sized Silver-Ethylene Glycol Colloid Prepared with Using Polyacrylamide-co-acrylic acid
백일현†, 조태연, 이종희, 박상도1
  • 한국에너지기술연구원 청정에너지연구부
  • 1한국에너지기술연구원 이산화탄소저감및처리기술개발사업단, 대전 305-343
Il-Hyung Baek†, Tae-Hyun Cho, Jong-Hee Lee, and Sang-Do Park1
  • Korea Institute of Energy Research, Clean Energy Research Department, Korea
  • 1Carbon Dioxide Reduction & Sequestion R&D Center, Korea Institute of Enenrgy Research, Daejeon 305-343, Korea
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초록
질산은(전구체), 에틸렌글리콜(용매 + 환원제) 그리고 PAA-co-AA (분산안정제)를 원료물질로 하여 나노크기의 은 콜로이드를 제조하였다. 특히 분산안정제 주입량을 변화시키면서 은 콜로이드를 제조한 후 콜로이드에 포함된 은 입자의 크기와 분포를 조사하였다. 분산 안정제의 주입량이 증가함에 따라, 입자의 크기는 작아졌으며 입자의 분포는 폭이 협소해졌다. 대체적으로 PAA-co-AA/AgNO3 비가 4인 은 콜로이드에서는 10 nm이하의 은 나노입자를 발견할 수 있었다. 시간이 경과함에 따른 분산 안정성을 조사하기 위하여, 제조 후 1, 3, 24, 72, 120 h 방치 후 입자의 성장에 대한 변화를 조사하였다. 제조 72 h 이후부터 UV 흡수도가 유사한 값을 나타내었는데, 이는 분산 안정제가 은 입자 응집을 방해하여 은 입자의 안정한 상태를 유지함을 의미한다.
Nanometer-sized silver colloid was prepared by using raw materials such as silver nitrate (precursor), ethylene glycol (solvent and reducing agent), and PAA-co-AA (dispersion stabilizer). In particular, the silver colloids were prepared by varying the amount of dispersion stabilizer, and the size and distribution of silver particles contained in the colloids were investigated. As the amount of dispersion stabilizer increased, the particle size became smaller and its distribution became narrower. Typically, when the ratio of PAA-co-AA/AgNO3 was 4, silver particles less than 10 nm were found in the silver colloid. Also, the growth degree of silver particles at 1, 3, 24, 72, and 120 h after the preparation was studied using UV-spectrometer to investigate dispersion stability with the lapsed time. The absorbance of UV showed similar values for the samples that had lapsed more than 72 h; this indicates that the stability of silver particles was maintained due to the dispersion stability that retarded the aggregation of silver particles.
Keywords:polyacrylamide-co-acrylicacid;silver;ethylene glycol;nanoparticle;dispersion stabilizer
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