纤维素-PET无纺布复合膜的制备及表征

Preparation and Characterization of Cellulose-PET Non-woven Fabric Membrane

关键词:  纤维素  PET无纺布  复合膜

Key Words:cellulose  PET non-woven fabric  composite membrane

摘要:将漂白针叶木浆离子液体溶液涂覆到聚酯纤维（PET）超薄无纺布上，制备了一种纤维素-PET无纺布复合膜。对该复合膜的形貌、物理性能和过滤性能进行表征，结果表明，纤维素以微/纳米的尺度均匀分布在PET无纺布上，并且有较好的结合。复合膜的平均孔径为0.3 μm，水通量达（12200±100） L/（m²·h·MPa），牛血清白蛋白（BSA）的截留率为99.1%。该方法所制备的纤维素复合膜在过滤分离领域有着一定的应用前景。

Abstract:In this paper， bleached softwood pulp was dissolved in the ionic liquid solution， and then the solution was coated on a polyester fiber （PET） ultra-thin non-woven fabric. Finally， the cellulose-PET non-woven fabric membrane was prepared by washing with distilled water. By characterizing the morphology， physical properties and filtration performance of the composite membrane， it was shown that the cellulose was evenly distributed on the PET non-woven fabric and had good bonding. The average pore size of the composite membrane was 0.3 μm， the water flux was (12200±100) L/（m²·h·MPa）， and the separation efficiency of Escherichia coli （BSA） was 99.1%. The cellulose composite membrane prepared by this method had a prospect in the field of filtration and separation．