Abstract
Microporous polypropylene hollow fiber membrane was fabricated from isotactic polypropylenesoybean oil system by melt spinning process. Addition of nucleating agent accelerated the crystallization rate and elevated the crystallization temperature. Nucleating agent increased the number of nuclei and spherulites, which offered more inter-spherulitic amorphous sites for stretching. Benzoic acid, adipic acid, and dibenzylidene sorbitol were selected as nucleating agents, and their characteristics and effects were investigated by thermal and optical analyses. Spherulite growth and micropore formation characteristics were correlated with the kind of nucleating agent. Benzoic acid and adipic acid showed the remarkable nucleating effect, while dibenzylidene sorbitol was less effective than those. Nucleating agents also helped the sample have uniform microporous structure. Increase of nucleating agent composition enhanced the nucleation effect to some extent. Nucleating agents played very important roles in enhancing the membrane porosity and water flux.
Similar content being viewed by others
References
A. J. Castro, U.S. Patent 4,247,498 (1981).
D. R. Lloyd, S. S. Kim, and K. E. Kinzer,J. Membrane Sci.,64, 1 (1991).
J.-J. Kim, J. R. Hwang, U.Y. Kim, and S. S. Kim,J. Membrane Sci.,108, 25 (1995).
J. H. Kim, M. S. Kang, I.-S. Cho, and S. S. Kim,Korea Polymer Journal,5(1), 44 (1997).
J. H. Kim, J. B. Ryu, K. Song, and S. S. Kim,Polymer (Korea),22, 849 (1998)
G. T. Caneba and D. S. Soong,Macromolecules,18, 2538 (1985).
G. T. Caneba and D. S. Soong,Macromolecules,18, 2545 (1985).
J.-J. Kim, T.-S. Jang, Y. D. Kwon, U. Y. Kim, and S. S. Kim,J. Membrane Sci.,93, 209 (1994).
T. Okada, H. Saito, M. Yamazaki, and T. Inoue,Polymer,31, 469 (1990).
N. Klein, D. Selivansky, and G. Marom,Polymer Composites,16, 189 (1995).
T. Foresta, S. Piccarolo, and G. Goldbeck-Wood,Polymer,42, 1167 (2001).
X. Zhang, F. Xie, Z. Pen, Y. Zhang, Y. Zhang, and W. Zhou,European Polymer Journal,38, 1 (2002).
G. B. A. Lim and D. R. Lloyd,Polymer Eng. & Sci.,33, 514 (1993).
G. B. A. Lim and D. R. Lloyd,Polymer Eng.. & Sci.,33, 522 (1993).
G. B. A. Lim and D. R. Lloyd,Polymer Eng.. & Sci.,33, 529 (1993).
G. B. A. Lim and D. R. Lloyd,Polymer Eng.. & Sci.,33, 537 (1993).
K. S. McGuire, D. R. Lloyd, and G. B. A. Lim,J. Membrane Sci.,79, 27 (1993).
M. Avella, R. dellErba, E. Martuscelli, and G. Ragosta,Polymer,34, 2951 (1993).
M. Ouederni and P. J. Phillips,J. Polymer Sci.: Part A: Polymer Phys.,33, 1313 (1995)
Author information
Authors and Affiliations
Additional information
Dedicated to Dr. Un Young Kim on the occasion of his retirement.
Rights and permissions
About this article
Cite this article
Kim, B.T., Song, K. & Kim, S.S. Effects of nucleating agents on preparation of polypropylene hollow fiber membranes by melt spinning process. Macromol. Res. 10, 127–134 (2002). https://doi.org/10.1007/BF03218302
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF03218302