Synthesis of Alumina Nano Particles by PAA Gel Method from Kaolin

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doi:2004.41.3.253

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$