本研究以方便取得、價廉、工業發展成熟的聚脂纖維紡織品做為基材，使用環保的材料進行表面修飾，製備出疏水/親油的分離膜，用以分離無界面活性劑 (surfactant-free) 與含有界面活性劑 (surfactant-stabilized) 的水在油中 (W/O) 乳化液。材料選用無氟的正辛基三乙氧基矽烷 (n-octyltriethoxysilane) 來製備疏水修飾二氧化矽奈米粒子 (hydrophobically modified SiO2, HM-SiO2)，與同樣無氟的聚二甲基矽氧烷 (PDMS) 交聯高分子混合，並利用浸塗法來修飾紡織品。
實驗結果顯示，以PDMS/HM-SiO2浸塗製成的疏水/親油紡織品，透過增加HM-SiO2的濃度以及重複塗佈的次數可以增加分離乳化液的成功率。其從表面形態以及分離結果可以證實主要影響分離成功的因素是分離膜的孔洞大小，並不是疏水的濕潤型態 (wetting mode) 之影響。而不論對於分離有、無界面活性劑 (Span 80) 的水在甲苯中乳化液，分離效率皆達99%。分離通量則隨著HM-SiO2濃度和重複塗佈次數的增加而降低。此外，增加乳化劑的濃度也會使分離通量降低。

In this work, a eco-friendly hydrophobic/oleophilic fabrics are prepared for separating the surfactant-free and surfactant-stabilized water-in-oil (W/O) emulsion. The substrates are using polyester fabrics because they are low-cost, easily accessible and their mature development of industry. In addition, the fluorine-free materials are used. The n-octyltriethoxysilane is used to hydrophobically modify SiO2 (HM-SiO2) and then blend with polydimethylsiloxane (PDMS) to form the dipping solution. Then using dip-coating to fabricate hydrophobic/oleophilic fabrics.
In the results, increasing the concentration of HM-SiO2 and coating times can increase the success opportunity of separating W/O emulsions. The surface morphology and separation results reveal that pore size is the main factor to separate W/O emulsion, and different wetting modes do not influence the results. Furthermore, the separation efficiency of both surfactant-free and surfactant-stabilized W/O emulsions separations are up to 99%. The flux will decrease when increasing concentration of HM-SiO2 and coating times. Moreover, the flux will decrease when increasing the concentration of surfactant.

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