TPX微孔複合膜之製備與應用

Preparation and Application of Microporous TPX Composite Membranes

李雍信(Yung-Hsin Lee)

指導教授 ： 王大銘

國立臺灣大學/工學院/化學工程學研究所/碩士(2004年)

https://doi.org/10.6342/NTU.2004.10220

摘要

本研究針對可應用於滲透蒸餾分離程序的聚四甲基-1-戊烯（TPX）複合膜之製備加以探討。根據以往的經驗，利用濕式相轉換法可以製備出TPX疏水性微孔膜，但是由於機械強度過低，無論在製程上或是應用上均受到很大的限制。本研究以中分子量TPX與一號濾紙（基材）製備出TPX微孔複合膜，成它a提升機械強度。然而將TPX複合膜與TPX顆粒膜比較之，發現複合膜雖然機械強度增加，但通量卻較小。因此，”基材孔隙度的影響”是造成通量下降的主要原因。

進一步將所製備的TPX微孔複合膜應用在滲透蒸餾分離程序上，藉著與商業化PTFE膜之比較，評估TPX微孔複合膜的分離效能。實驗結果顯示：應用於滲透蒸餾程序，TPX微孔複合膜與商業化PTFE膜的通量相差不大。

最後，將滲透蒸餾與恆壓過濾實驗比較，評估在濃縮蛋白質及peptide的效能。結果顯示：對於三種進料，滲透蒸餾程序擁有較高的分離效果。另外，滲透蒸餾沒有結垢現象（fouling），因此通量可以維持穩定，適合長期操作。

關鍵字

恆壓過濾 ； 聚四甲基-1-戊烯 ； 顆粒膜 ； 滲透蒸餾 ； 複合膜

並列摘要

Poly(4-methyl-1-pentene) (TPX) composite membranes for the application of osmotic distillation are prepared in this study. Due to the weak mechanical strength, the preparation and application of the TPX hydrophobic particulate membranes prepared by wet-phase inversion are restricted. The TPX composite membranes are prepared by medium molecular weight TPX and filter paper. The results show that the mechanical strength can be improved successfully. However, the flux of TPX composite membranes is smaller than that of TPX particulate membranes. It shows that the porosity of the substrate is the main factors about the flux.

The TPX composite membranes are also compared with commercial PTFE membranes in the application of osmotic distillation. The results show that the fluxes of prepared membranes and commercial PTFE membranes are fairly identical.

Finally, comparison between the dead-end filtration by using commercial membranes and the osmotic distillation by using TPX prepared composite membranes was investigated. The results show that the fluxes or retentions of osmotic distillation are better. Because there is no fouling in osmotic distillation, the flux is almost constant.

並列關鍵字

poly(4-methyl-1-pentene) ； composite membrane ； TPX ； dead-end filtration ； osmotic distillation ； particulate membrane

參考文獻

10.P.A. Hogan, R.P. Canning, P.A. Peterson, R.A. Johnson, and A.S. Michaels, Option: Osmotic Distillation, Chemical Engineering Progress, 93, 49 (1998).

1.M. Mulder, Basic Principles of Membrane Technology, Kluwer Academic Publishers, Dordrecht (1991).

2.W. Eykamp, Microfiltration and Ultrafiltration, in Membrane Separation Technolgy (ed. Noble and Stern), Elsevier, Amsterdam.

3.R.Baker, Controlled Release of Biologically Active Agent, Wiley, New York (1987).

4.B.S. Kim, and D.J. Mooney, “Development of Biocompatible Synthetic Extracellular Matrices for Tissue Engineering”, Trends in Biotechnology, 16 (5), 224 (1998).