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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received June 28, 2004
Accepted November 1, 2004

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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CO2 초임계 유체에서 열식법을 이용한 다공성 폴리프로필렌 막의 제조

Preparation of Porous Polypropylene Membrane by a Thermally Induced Phase Separation Method in Supercritical CO2

이상준 정재관^†

Sang-Joon Lee Jaygwan G. Chung^†

성균관대학교 화학공학부, 440-746 경기도 수원시 장안구 천전동 300

Department of Chemical Engineering, Sungkyunkwan University, 300, Chunchun-dong, Jangan-gu, Suwon 440-746, Korea

jgchung@skku.edu

Korean Chemical Engineering Research, February 2005, 43(1), 16-20(5), NONE Epub 3 March 2005

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Abstract

CO2 초임계 유체에서 열식법을 이용하여 폴리프로필렌과 켐펜을 혼합하여 다공성 폴리프로필렌 막을 제조했다. 폴리프로필렌 농도 10 wt%의 조건에서 제조된 폴리프로필렌 막의 공극률은 메탄을, 에탄올, n-부탄올에 따라 각각 78, 80, 73%였다. 폴리프로필렌의 농도가 증가할수록 인장강도는 높아졌으며 폴리프로필렌 농도가 10 wt% 일 때 인장강도는 0.17 kgf/mm2였다. CO2 초임계 유체를 사용하여 켐펜을 추출한 결과 시간에 따라 추출속도가 증가하였으며 5분 경과 후 94% 제거되었다ㅏ. 온도가 증가함에 따라 추출속도가 증가했으며 45 ℃ 조건에서 99% 제거되었다. 그러나 그 이상의 높은 온도에서는 추출속도는 저하되었다. 150 bar의 압력까지는 압력이 증가함에 따라 켐펜의 추출속도는 증가하였으나, 그 이상의 압력 조건에서는 압력이 증가함에 따라 추출속도는 미소하게 감소했다. 추출속도는 CO2 초임계 유체의 켐펜에 대한 용해도 특성과 상관성이 있었다.

Porous polypropylene membranes were prepared by a thermally induced phase separation method in supercritical CO2, where polypropylene and Camphene were used as raw materials. The porosity of polypropylene membranes with 10 wt% polypropylene concentration was 78, 80, 73% by using methanol, ethanol, and n-buthanol as an analytical solvent, respectively. The tensile strength increased with an increasing polypropylene concentration, where it was 0.17 kgf/mm2 at 10 wt% polypropylene concentration. The extraction rate for Camphene increased with time and Camphene was removed 94% in 5 min. It increased with an increasing temperature and was 99% at 45 ℃, however, decreased with an increasing temperature at higher than 45 ℃. The extraction rate increased with an increasing pressue up to 150 bar, however, decreased slightly with an increasing pressure over 150 bar. The extraction rate had a relation with the solubility of Camphene in supercritical CO2.

Keywords

Porous Polypropylene Membrane Camphene Supercritical CO2 Thermal Induced Phase Separation Method

References

Kang M, Chai H, Yang W, Appl. Chem., 6(1), 328 (2002)
Park HB, Lee YM, J. Korean Ind. Eng. Chem., 13(1), 1-11 (2002)
Lee SG, Lee JH, Choi KY, Rhee JM, Polym.(Korea), 22(2), 258 (1998)
Bae B, Chun BH, Ha HY, Oh IH, Kim D, J. Membr. Sci., 202(1-2), 245 (2002)
Yang MC, Perng JS, J. Membr. Sci., 187(1-2), 13 (2001)
Matsuyama H, Yuasa M, Kitamura Y, Teramoto M, Lloyd DR, J. Membr. Sci., 179(1-2), 91 (2000)
Evren V, J. Membr. Sci., 175(1), 97 (2000)
Kim HJ, Kang YS, Kim JJ, Polym. Sci. Technol., 2(2), 81 (1991)
Atkinson PM, Lloyd DR, J. Membr. Sci., 175(2), 225 (2000)
Kim JR, Kyong JB, J. Korean Chem. Soc., 34(4), 325 (1990)
Lee JS, Jeon BJ, Jung IH, Hong IK, J. Korean Ind. Eng. Chem., 6(2), 320 (1995)
Matsuyama H, Yano H, Maki T, Teramoto M, Mishima K, Matsuyama K, J. Membr. Sci., 194(2), 157 (2001)
Matsuyama H, Yamamoto A, Yano H, Maki T, Teramoto M, Mishima K, Matsuyama K, J. Membr. Sci., 204(1-2), 81 (2002)
Lee SB, Kim HJ, Jung IH, Hong IK, Theor. Appl. Chem. Eng., 1(1), 912 (1995)
Matsuyama H, Maki T, Teramoto M, Asano K, J. Membr. Sci., 204(1-2), 323 (2002)
Lee SJ, Kim MS, Chung JG, J. Korean Ind. Eng. Chem., 14(8), 1058 (2003)
Shi Q, Yu MX, Zhou X, Yan YS, Wan CR, J. Power Sources, 103(2), 286 (2002)
Kim JR, Kim HK, Kyong JB, J. Korean. Chem. Soc., 32(4), 311 (1988)
Sun YP, Supercritical Fluid Technology in Materials Science and Engineering, Marcel Dekker, Ind., New York, NY (2002)