Effects of charge and hydrophilicity on the anti-fouling properties of kidney-inspired, polyester membranes,Molecular Systems Design & Engineering

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Effects of charge and hydrophilicity on the anti-fouling properties of kidney-inspired, polyester membranes
Molecular Systems Design & Engineering ( IF 3.2 ) Pub Date : 2020-07-03 , DOI: 10.1039/d0me00045k
Halan Mohamed _{1,

2,

3,

4} , Stephen Hudziak _{2,

3,

4,

5} , Vishanigaa Arumuganathan _{1,

2,

3,

4} , Zheyi Meng _{1,

2,

3,

4,

6} , Marc-Olivier Coppens _{1,

2,

3,

4}

Affiliation

Nature-inspired materials hold promise to tackle fouling experienced by membranes. Herein, a systematic approach is taken to explore the relative impact of charge and hydrophilicity on the anti-fouling properties of polyester membranes, both of which appear to play a role in the kidney's remarkable anti-fouling properties. Monofunctional and bifunctional polypropylene glycol (PPG) and polyethylene glycol (PEG) are used to modify polyester membranes. In both cases of hydrophilic modification and the addition of charge, a reduction in the adsorbed mass of lysozyme is experienced, as a rudimentary proxy for anti-fouling. Force spectroscopy measurements are used to quantify the change in adhesion force between the lysozyme functionalised tip and the modified PET surface. Adhesion forces decrease most between monofunctional and bifunctional PPG, which is supported by filtration results. This suggests that charge impacts the anti-fouling potential more significantly than hydrophilicity. This opens a new prospective avenue to modify membranes in order to improve their anti-fouling properties.

中文翻译：

电荷和亲水性对肾脏启发的聚酯膜防污性能的影响

受自然启发的材料有望解决膜的污染问题。在本文中，采用系统的方法来探索电荷和亲水性对聚酯膜防污性能的相对影响，这两者似乎都在肾脏显着的防污性能中起作用。单官能和双官能聚丙二醇（PPG）和聚乙二醇（PEG）用于修饰聚酯膜。在亲水改性和添加电荷的两种情况下，都可以减少溶菌酶的吸附量，作为抗污垢的基本替代。力谱测量用于量化溶菌酶功能化尖端和改性PET表面之间的粘附力变化。单功能和双功能PPG之间的粘合力降低最多，这得到过滤结果的支持。这表明电荷比亲水性对防污潜能的影响更大。这为修饰膜以改善其防污性能开辟了一条新的预期途径。

更新日期：2020-08-17

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