Sacrificial Core법을 이용한 실리카 중공 미세구의 제조

신희관; 박용성; 우제완; 장길상; 황영애; Hee Kwan Shin; Yong Sung Park; Je Wan Woo; Kil Sang Chang; Young Ae Whang Park

Journal of the Korean Industrial and Engineering Chemistry, Vol.15, No.1, 65-69, February, 2004

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Sacrificial Core법을 이용한 실리카 중공 미세구의 제조

Preparation of Hollow Silica Microspheres by Sacrificial Core Method

신희관, 박용성^†, 우제완 , 장길상, 황영애¹

상명대학교 공업화학과, 서울 110-743
¹상명대학교 화학과, 서울 110-743

Hee Kwan Shin, Yong Sung Park^†, Je Wan Woo , Kil Sang Chang, and Young Ae Whang Park¹

Department of Industrial chemistry, Sangmyung University, Seoul 110-743, Korea
¹Department of Chemistry, Sangmyung University, Seoul 110-743, Korea

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초록

실리카 중공 미세구는 의약 및 농약 분야에서 기능성 물질의 캡슐화 공정 등에서 관심의 대상이 되고 있다. 본 연구에서는 고분자 핵인 polystyrene 미세구에 tetraethoxy silane의 가수분해와 축합 반응에 의해 생성되는 실리카 입자를 코팅한 후, 내부의 핵을 제거하는 sacrificial core법으로 실리카 중공 미세구를 제조하고자 하였으며, 실험결과, 물 4.0 %, TEOS 5.0 %, 촉매 2.0 % 이상의 조건에서 생성된 실리카 미립자의 코팅이 이루어져 실리카 중공 미세구의 제조가 가능하였다.

Hollow silica microspheres has aroused great interests for its various applications in the field of capsulation of medicinal drugs and agricultural chemicals. In this study, hollow silica microspheres were synthesized by sacrificial core method for which silica particles of nanosize generated by tetraethoxy silane hydrolysis and condensation are coated on the surfaces of polystyrene microspheres. As the experimental results, hollow silica microsphere was stably prepared when synthesized with mixing more than 4.0% of water, 5.0% of tetraethoxy silane and 2.0% of catalyst.

Keywords:silica microsphere;hollow microsphere;polystyrene microsphere;emulsion;silica coating

[References]

McMurrer M, Plastics Compounding, Nov/Dec., 16 (1985)
Kim MS, Seok SI, Ahn BY, Suh TS, Koo SM, J. Korean Ind. Eng. Chem., 13(2), 151 (2002)
Allan R, Dressler JL, Jackson CK, Hendricks CD, Laser Fusion Hollow Glass Microspheres by the Liquid Droplet Method, Lawrence Livermore Laboratory Report UCRL-81421 (1978)
Klein LC, Sol-Gel Technology for Thin Films, Fibers, Preforms, Electronics, and Specialty Shapes, Noyes, Park Ridge, NJ, 330 (1988)
Geiger G, J. Am. Ceram. Soc., 73, 57
Meyer R, Weitzing H, Xu Q, Zhang Q, Newnham RE, Cochron JK, J. Am. Ceram. Soc., 77, 1669 (1994)
Sowman HG, Non-Vitreous Ceramic Metal Oxide Microcapsules and Process for Making Smae, U.S. Patent, 4,349,456 (1982)
Wilcox DL, Berg M, Bernat T, MRS Symp. Proc., 372 (1995)
Beck WR, O'Brien DL, U.S. Patent, 3,365,315
Kim KK, Jang KY, J. Am. Ceram. Soc., 74, 1987 (1991)
Kawahashi N, Matijevic E, J. Colloid Interface Sci., 138, 534 (1991)
Kentepozidou A, Kiparissides C, Kotzia F, Kollia C, Spyrellis N, J. Mater. Sci., 31(5), 1175 (1996)
Meyer R, Weitzing H, J. Am. Ceram. Soc., 77, 1669 (1994)
Shin HK, Park YS, Woo JW, Whang YA, J. Korean Ind. Eng. Chem., 13(5), 482 (2002)
졸-겔법의 과학, KU Press, Kung Nam (1988)

[Referenced By]

[Related Articles]

[1] McMurrer M, Plastics Compounding, Nov/Dec., 16 (1985)

[2] Kim MS, Seok SI, Ahn BY, Suh TS, Koo SM, J. Korean Ind. Eng. Chem., 13(2), 151 (2002)

[3] Allan R, Dressler JL, Jackson CK, Hendricks CD, Laser Fusion Hollow Glass Microspheres by the Liquid Droplet Method, Lawrence Livermore Laboratory Report UCRL-81421 (1978)

[4] Klein LC, Sol-Gel Technology for Thin Films, Fibers, Preforms, Electronics, and Specialty Shapes, Noyes, Park Ridge, NJ, 330 (1988)

[5] Geiger G, J. Am. Ceram. Soc., 73, 57

[6] Meyer R, Weitzing H, Xu Q, Zhang Q, Newnham RE, Cochron JK, J. Am. Ceram. Soc., 77, 1669 (1994)

[7] Sowman HG, Non-Vitreous Ceramic Metal Oxide Microcapsules and Process for Making Smae, U.S. Patent, 4,349,456 (1982)

[8] Wilcox DL, Berg M, Bernat T, MRS Symp. Proc., 372 (1995)

[9] Beck WR, O'Brien DL, U.S. Patent, 3,365,315

[10] Kim KK, Jang KY, J. Am. Ceram. Soc., 74, 1987 (1991)

[11] Kawahashi N, Matijevic E, J. Colloid Interface Sci., 138, 534 (1991)

[12] Kentepozidou A, Kiparissides C, Kotzia F, Kollia C, Spyrellis N, J. Mater. Sci., 31(5), 1175 (1996)

[13] Meyer R, Weitzing H, J. Am. Ceram. Soc., 77, 1669 (1994)

[14] Shin HK, Park YS, Woo JW, Whang YA, J. Korean Ind. Eng. Chem., 13(5), 482 (2002)

[15] 졸-겔법의 과학, KU Press, Kung Nam (1988)