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J. Korean Ceram. Soc. > Volume 41(3); 2004 > Article
Journal of the Korean Ceramic Society 2004;41(3): 253.
doi: https://doi.org/10.4191/kcers.2004.41.3.253
카올린으로부터 PAA Gel법에 의한 알루미나 나노 입자의 합성
김지경, 이상근1, 신준식2, 홍성수2, 박성수2, 박희찬
부산대학교 재료공학부
1부산대학교 재료공학
2부경대학교 화학공학
Synthesis of Alumina Nano Particles by PAA Gel Method from Kaolin
ABSTRACT
Non-aggregated nanoscale $alpha$-Al$_2$O$_3$ powders were prepared successfully by polyacrylamine (PAA) gel method. The method was very simple and polymer network inhibited the aggregate of $alpha$-Al$_2$O$_3$ powders. In this investigation, nanoparticles of $alpha$-Al$_2$O$_3$ with a diameter of about 8-15 nm were fabricated by calcining the gel precusors with various concentrations of aluminum sulfate, acrylamide and N,N'-methylene-bis-acrylamide (BIS) in air at 110$0^{circ}C$ for 2 h. The molar ratio of aluminum sulfate to acrylamide did not have any influence on the size of particles. On the other hand, as the molar ratio of BIS to acrylamide increased, the size of nanoparticles decreased.
Key words: Nano, Powder, Polyacrylamide, Gel, $a\lpha$-$Al_2$$O_3$
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