키토산인산염 현탁액의 전기유변학적 특성

지한순; 고영건; 이상순; 최웅수; Han Soon Jee; Young Gun Ko; Sang Shun Lee; Ung-su Choi

Journal of the Korean Industrial and Engineering Chemistry, Vol.11, No.6, 605-609, October, 2000

Export Citation

키토산인산염 현탁액의 전기유변학적 특성

Electrorheological Properties of Chitosan Phosphate Suspension

지한순, 고영건¹, 이상순, 최웅수 ^{1, †}

동덕여대 응용화학과, 서울 136-714
¹한국과학기술연구원 트라이볼로지센터, 서울 136-791

Han Soon Jee, Young Gun Ko¹, Sang Shun Lee, and Ung-su Choi^{1, †}

Department of Applied, Dongduck Women's University, Seoul 136-714, Korea
¹Tribology Center, Korea Institue of Science and Technology, Seoul 136-791, Korea

E-mail:

초록

실리콘유와 광유등의 절연유체에 극성을 띠는 미세입자가 분산된 현탁액의 형태인 전기유변성유체로서 키토산의 유도체인 키토산인산염에 관하여 연구하였다. 키토산인산염은 종래의 전기유변성유체가 지녔던 유변재료의 침전, 수분으로 인한 불안정한 전기유변적 특성과 장치내의 부식성, 환경오염 문제를 극복할 수 있는 장점을 나타냈다. 주어진 전기장하에서 여러 개의 사슬(multi-chain)로부터 기인되는 뛰어난 전기유변효과를 보였으며, 이는 키토산인산염 입자가 지니는 아미노기 및 인산염기의 극성 그룹의 활성화 때문으로 조사되었다. 0.3의 입자부피분율로 제조된 키토산인산염 전기유변성유체의 3 kV/mm, DC 전기장하에서의 전단응력값은 일반 키토산 전기유변성유체의 값보다 3∼4배 정도 높은 1200 Pa 정도의 값을 보였다.

Electrorheological (ER) fluids are nonaqueous suspensions composed of electrically polarizable particles dispersed in a dielectric fluid like a silicone oil. Especially, the disperse phase plays an important role in the ER effect. The synthesized chitosan phosphate suspension showed excellent ER response (Bingham flow behavior) due to multi-chain structure upon application of the DC electric field. The shear yield stress for the chitosan phosphate suspension exhibited a linear dependence on the volume fraction of particles and the squared electric field. On the basis of the experimental results, the chitosan phosphate suspension has been found to be a new ER fluid.

Keywords:Electrorheological (ER) fluid;Chitosan phosphate;Multi-chain sturcture;Bingham fluid

[References]

Winslow WM, J. Physics, 20, 1137 (1949)
U.S. Patent, 2,661,596 (1953)
Shulman ZP, Gorodkin RG, Koroboko ZV, J. Non-Newton. Fluid Mech., 8, 29 (1981)
Weiss KD, Carlson JD, J. Intell. Sys. Struc., 4, 13 (1993)
Therese CJ, Montgomery TS, IEEE Trans. Electrical Insulation, 24, Oct. (1989)
Klingberg DJ, Zukoski CF, Langmuir, 6, 24 (1990)
Block H, Kelly JP, J. Phys. D: Appl. Phys., 21, 1661 (1988)
Chen YS, Conrad H, J. Appl. Phys., 70, 6796 (1991)
Gow CJ, Zukoski CF, J. Colloid Interface Sci., 136, 175 (1990)
Gast AP, Zukoski CF, Adv. Colloid Interface Sci., 30, 153 (1989)
Halsey TC, Toor W, Phys. Rev. Lett., 65, 2820 (1990)
Klingenberg DJ, Zukoski CF, Langmuir, 6, 15 (1990)
Uejima H, Jpn. J. Appl. Phys., 11, 319 (1972)
Li Y, Chen Y, Conrad H, Development Electrorheological Flows ASME, 235, 29 (1995)
Block H, Kelly JP, Langmuir, 6, 6 (1990)
Bloodworth R, Wendt E, "Progress in electrorheology," ed. K.O. Havelko and F.E. Filisko, 185, Plenum Press, New York (1995)
Brine CJ, "Chitin: Accomplishment and Perspectives," ed. C.J. Brine, P.A. Sandford and J.P. Zikakis, 1, Elsevier Applied Science, New York and London (1992)
Kim JJ, Kim MJ, Joen DW, Polym. Sci. Technol., 8(5), 579 (1997)
Colthup NB, Daly LH, Wiberley SE, "Introduction to Infrared and Raman Spectroscopy," 3, Academic Press, Inc., San Diego (1990)
Conrad H, Chen Y, "Electrical Properties and the Strength of Electrorheological Fluids," ed. K.O. Havelka and F.E. Filisko, 55, Plenum Press, New York (1995)
Conrad H, Chen Y, Sprecher AF, Int. Modn. Phys., B(15), 1575 (1992)

[Referenced By]

[Related Articles]

[1] Winslow WM, J. Physics, 20, 1137 (1949)

[2] U.S. Patent, 2,661,596 (1953)

[3] Shulman ZP, Gorodkin RG, Koroboko ZV, J. Non-Newton. Fluid Mech., 8, 29 (1981)

[4] Weiss KD, Carlson JD, J. Intell. Sys. Struc., 4, 13 (1993)

[5] Therese CJ, Montgomery TS, IEEE Trans. Electrical Insulation, 24, Oct. (1989)

[6] Klingberg DJ, Zukoski CF, Langmuir, 6, 24 (1990)

[7] Block H, Kelly JP, J. Phys. D: Appl. Phys., 21, 1661 (1988)

[8] Chen YS, Conrad H, J. Appl. Phys., 70, 6796 (1991)

[9] Gow CJ, Zukoski CF, J. Colloid Interface Sci., 136, 175 (1990)

[10] Gast AP, Zukoski CF, Adv. Colloid Interface Sci., 30, 153 (1989)

[11] Halsey TC, Toor W, Phys. Rev. Lett., 65, 2820 (1990)

[12] Klingenberg DJ, Zukoski CF, Langmuir, 6, 15 (1990)

[13] Uejima H, Jpn. J. Appl. Phys., 11, 319 (1972)

[14] Li Y, Chen Y, Conrad H, Development Electrorheological Flows ASME, 235, 29 (1995)

[15] Block H, Kelly JP, Langmuir, 6, 6 (1990)

[16] Bloodworth R, Wendt E, "Progress in electrorheology," ed. K.O. Havelko and F.E. Filisko, 185, Plenum Press, New York (1995)

[17] Brine CJ, "Chitin: Accomplishment and Perspectives," ed. C.J. Brine, P.A. Sandford and J.P. Zikakis, 1, Elsevier Applied Science, New York and London (1992)

[18] Kim JJ, Kim MJ, Joen DW, Polym. Sci. Technol., 8(5), 579 (1997)

[19] Colthup NB, Daly LH, Wiberley SE, "Introduction to Infrared and Raman Spectroscopy," 3, Academic Press, Inc., San Diego (1990)

[20] Conrad H, Chen Y, "Electrical Properties and the Strength of Electrorheological Fluids," ed. K.O. Havelka and F.E. Filisko, 55, Plenum Press, New York (1995)

[21] Conrad H, Chen Y, Sprecher AF, Int. Modn. Phys., B(15), 1575 (1992)