Dimethyl Isosorbide As a Green Solvent for Sustainable Ultrafiltration and Microfiltration Membrane Preparation,ACS Sustainable Chemistry & Engineering

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Dimethyl Isosorbide As a Green Solvent for Sustainable Ultrafiltration and Microfiltration Membrane Preparation
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2019-12-10 , DOI: 10.1021/acssuschemeng.9b06496
Francesca Russo ₁ , Francesco Galiano ₁ , Francesco Pedace ₁ , Fabio Aricò ₂ , Alberto Figoli ₁

Affiliation

Dimethyl isosorbide (DMI)—a well-known biobased high boiling green solvent—was used for the first time in the preparation of poly(vinylidene fluoride)- and poly(ether sulfone)-based membranes. Preliminary thermodynamic (Hansen and Hildebrand solubility parameters, relative energy difference) and kinetic (viscosity) studies on DMI confirmed that this solvent possesses the required physical/chemical properties to be exploited in casting membranes. Membranes were prepared by nonsolvent induced phase separation (NIPS) and a combination of vapor induced phase separation (VIPS)-NIPS techniques varying the exposure time to humidity. This latter approach led to the formation of membranes with a porous architecture avoiding the use of any pore forming additive. The so-prepared membranes were, then, fully characterized in terms of morphology, polymorphism (in case of PVDF), wettability, thickness, porosity, pore size, and water permeability. The membranes revealed different structures and a tunable pore size in the range of ultrafiltration (UF) and microfiltration (MF) that render them ideal for applications in water treatment processes.

中文翻译：

异山梨醇二甲酯作为可持续超滤和微滤膜制备的绿色溶剂

二甲基异山梨醇酯（DMI）是一种众所周知的生物基高沸点绿色溶剂，首次用于制备基于聚偏二氟乙烯和聚醚砜的膜。在DMI上进行的初步热力学（Hansen和Hildebrand溶解度参数，相对能量差）和动力学（粘度）研究证实，该溶剂具有在流延膜中需要的物理/化学性质。通过非溶剂诱导相分离（NIPS）和汽相诱导相分离（VIPS）-NIPS技术的组合来制备膜，这些方法会改变暴露于湿气的时间。后一种方法导致形成具有多孔结构的膜，从而避免使用任何成孔添加剂。然后，对制备好的膜进行形态学表征，多态性（在PVDF的情况下），润湿性，厚度，孔隙率，孔径和透水性。该膜在超滤（UF）和微滤（MF）的范围内显示出不同的结构和可调的孔径，因此非常适合在水处理工艺中使用。

更新日期：2019-12-11

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