용융방사와 연신에 의한 미세다공성 Polyethylene 중공사막의 배향 및 결정화도와 막성능에 대한 고찰

장태석; 김재진; 김은영

Polymer(Korea), Vol.15, No.6, 702-708, December, 1991

A Study on the Orientation and Crystallinity and Membrane Performance of Microporous Polyethylene Hollow Fiber Membranes by Melt Spinning and Drawing

장태석, 김재진, 김은영

초록

Tube-in-orifice형 방사구금이 설치된 용융방사 장치를 통해 폴리에틸렌 중공사를 제조한 후, 열처리, 연신 및 열고정 공정을 통해 미세다공성을 부여하였다. 제조조건 중 드래프트비, 방사온도, 아닐링 공정 등이 중공사의 배향도, 결정화도 및 중공사막의 bubble point에 미치는 영향을 조사하였다. 전자현미경에 의한 표면관찰결과 미세공은 망상구조를 가지며 직경이 약 0.3∼0.5㎛였다. 배향도와 결정화도가 높은 중공사인 경우에 막의 기공이 크고 다공도가 우수하였다.

Polyethylene hollow fibers were prepared by a melt spinning apparatus with a tube-in-orifice type nozzle. After annealing treatment, the undrawn fiber was drawn and received heat-set to give microporocity. The effects of processing conditions such as draft ratio, spinning temperature, and annealing condition on the fiber properties such as orientation, crystallinity and bubble point were investigated. The preliminary results showed that the micropores have net-like structure with the range of the diameter about 0.3∼0.5 ㎛ and the hollow fibers showed relatively good membrane performance when the crystallinity and the molecular orientation in fiber are high.

[References]

Shindo M, U.S. Patent, 4,530,809 (Mitsubishi Rayon Co.) (1985)
Kamada K, U.S. Patent, 4,055,696 (Mitsubishi Rayon Co.) (1977)
Kwon YD, Jang TS, Kim JJ, Kim UY, Polym.(Korea), 14(2), 170 (1990)
Keller A, Marchin MJ, J. Macromol. Sci.-Phys., B1, 41 (1967)
Tagawa T, Ogura K, J. Polym. Sci. B: Polym. Phys., 18, 971 (1980)
Caron SL, J. Polym. Sci. Macro. Rev., 11, 209 (1976)
Cayrol B, J. Polym. Sci. B: Polym. Phys., 12, 2169 (1974)
Jang TS, Kim JJ, Kim UY, HWAHAK KONGHAK, 29(5), 520 (1991)
Bierenbaum HS, Isaacson RB, Druin ML, Plovan SG, Ind. Eng. Chem. Prod. Res. Dev., 13(1), 2 (1974)
Mark HF, "Encyclopedia of Polymer Science and Engineering," 2nd ed., John Wiley & Sons, N.Y., Vol. 4, p. 483 (1987)
ASTM F316-80, E128-61

[1] Shindo M, U.S. Patent, 4,530,809 (Mitsubishi Rayon Co.) (1985)

[2] Kamada K, U.S. Patent, 4,055,696 (Mitsubishi Rayon Co.) (1977)

[3] Kwon YD, Jang TS, Kim JJ, Kim UY, Polym.(Korea), 14(2), 170 (1990)

[4] Keller A, Marchin MJ, J. Macromol. Sci.-Phys., B1, 41 (1967)

[5] Tagawa T, Ogura K, J. Polym. Sci. B: Polym. Phys., 18, 971 (1980)

[6] Caron SL, J. Polym. Sci. Macro. Rev., 11, 209 (1976)

[7] Cayrol B, J. Polym. Sci. B: Polym. Phys., 12, 2169 (1974)

[8] Jang TS, Kim JJ, Kim UY, HWAHAK KONGHAK, 29(5), 520 (1991)

[9] Bierenbaum HS, Isaacson RB, Druin ML, Plovan SG, Ind. Eng. Chem. Prod. Res. Dev., 13(1), 2 (1974)

[10] Mark HF, "Encyclopedia of Polymer Science and Engineering," 2nd ed., John Wiley & Sons, N.Y., Vol. 4, p. 483 (1987)

[11] ASTM F316-80, E128-61