使用等孔膜生产10微米以下的纤维素微珠

IF 4.9 Q1 ENGINEERING, CHEMICAL
Ekanem E. Ekanem , Ainur Sabirova , Ciarán Callaghan , Janet L. Scott , Karen J. Edler , Suzana P. Nunes , Davide Mattia
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引用次数: 0

摘要

本文首次报道了用等孔膜乳化法制备10µm以下的纤维素微珠。采用光刻技术制备了具有孔间距离、孔径和直通式孔的聚对苯二甲酸乙酯膜。8 wt%的纤维素溶液的分散相通过膜孔挤压,形成,由于顶部搅拌器提供的剪切作用,纤维素溶液滴分散在由2 wt%和5 wt% Span在葵花籽油中组成的连续相中。与乙醇相转化后,10µm以下微珠的变异系数(CV) <45%是通过探索韦伯数(Wed) -毛细数(Cac)乳化液生成空间得到的。这些结果表明,通过光刻技术制造的等孔聚合物膜可以生产出低于10 μ m的纤维素微珠,在个人护理、食品和药品行业有广泛的应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Production of sub-10 micrometre cellulose microbeads using isoporous membranes

Production of sub-10 micrometre cellulose microbeads using isoporous membranes

The production of sub-10 µm cellulose microbeads via membrane emulsification using isoporous membranes is reported here for the first time. Poly(ethylene terephthalate) membranes, with defined interpore distances, pore diameters and straight-through pores were fabricated via photolithography. A dispersed phase of 8 wt% cellulose solution was extruded through the membrane pores, forming, due to shear provided by an overhead stirrer, cellulose solution droplets dispersed in a continuous phase composed of 2 wt% and 5 wt% Span in sunflower oil. Upon phase inversion with ethanol, sub-10 µm microbeads with a coefficient of variation (CV) < 45 % were produced by exploring the Weber number (Wed) - Capillary number (Cac) emulsion generation space.

These results show that sub-10 µm cellulose microbeads can be produced using isoporous polymer membranes fabricated via photolithography, for use in a wide range of applications in the personal care, food and drug industries.

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