環氧樹脂薄膜之製備及特性分析

本研究利用化學誘發相分離製備具有孔洞互穿結構的環氧樹脂薄膜。以雙酚A型的環氧樹脂（D.E.R. 331）為預聚物，分別利用紫外光及加熱聚合反應，來誘發環氧樹脂與溶劑間的相分離以製備多孔性之薄膜。在紫外光聚合反應誘發相分離的光硬化聚合反應中，環氧樹脂薄膜內部孔徑會隨著溶劑含量及光起始劑(UVI 6976)比例的增加而增加。此外我們也發現當溶劑含量介於52-56vol.%時，在薄膜內部孔洞呈現出彼此通孔互穿的型態。另藉由DSC測量薄膜的熱性質，由結果指出其Tg溫度大約在110℃左右。於恆溫下，利用硬化劑(DMP-30)加熱聚合反應時，以OPP (二軸延伸聚丙烯，Oriented polypropylene)薄膜為高分子溶液聚合的接觸界面製備薄膜，所測得薄膜的玻璃轉移溫度約在115℃且最大熱裂解溫度約在435℃，該薄膜在溶劑量為30vol.%時表面開始出現孔洞，隨著溶劑量的增加表面孔洞持續增大且內部結構通孔互穿，直到溶劑量為42vol.%時表面呈現緻密無孔洞且結構鬆散。此外，以二甲基庚酮、乙醇與水，對不同薄膜做滲透試驗，薄膜滲透的通量會隨著製備薄膜的溶劑量增加而有上升的趨勢，以此得到乙醇對該薄膜的滲透通量=2.5-1482.1 l•m-2•h-1•bar-1。

關鍵字

化學誘發相分離；環氧樹脂薄膜；薄膜型態；滲透

並列摘要

Membranes with porous structure were formed by polymerization induced phase separation, in which bisphenol-A type epoxy resin, D.E.R. 331, as a precursor was cured at UV radiation or heating. Under UV polymerization induced phase separation, the aperture of membrane increases with increasing of the fraction of solvent or photoinitiator (UVI6976). When solvent content is between 52-56vol.%, it was found that the pores in the membrane seems to be mutually interconnected. The Tg of the cured membranes determined by a DSC is about 110℃. On the other hand, in thermal polymerization induced phase separation, the epoxy resin was cured with DMP-30, in which an OPP( Oriented polypropylene ) film as the contact surface on the solution of resin. The Tg of the cured membrane is about 115℃, and the temperature at maximum mass loss measured by a TGA is about 435℃. When the solvent fraction is higher than 30vol.%, some pores appeared on the membrane surface, and the pore size increases with the solvent fraction. However, after 42vol.% of solvent, the pores on the surface begin to disappear. The permeability of ethanol is about 2.5-1482.1 l•m-2•h-1•bar-1, it is dependent on the morphology of the epoxy membrane.

並列關鍵字

chemically induced phase separation ； epoxy membrane ； membrane morphology ； permeability

參考文獻

[6] 范舒晴，聚醯胺與聚醯亞胺膜於滲透蒸發與蒸氣揮發之研究，博士論文，中原大學化學工程研究所，中壢，2004。

[10] 蔡易書，新型聚醯亞胺薄膜應用在滲透蒸發程序分離醇類水溶液，碩士論文，中原大學化學工程研究所，中壢，2002。

[1] M. Mulder, ”Basic principles of membrane technology”, Kluwer Academic Publishers, The Netherlands,(1996)

[3] R.Y.M. Huang, R. Pal, G.Y. Moon, “Pervaporation dehydration of aqueous ethanol and isopropanol mixtures through alginate/chitosan two ply composite membranes supported by poly(vinylidene fluoride) porous membrane”, J. Membr. Sci. 167(2000) 275~289

[4] M.Y. Teng, K.R. Lee, D.J. Liaw, J.Y. Lai, “Preparation and pervaporation performance of poly(3-alkylthiophene) membrane”, Polymer 41(2000) 2047~2052

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環氧樹脂薄膜之製備及特性分析

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