Modifying the surface of active polyamide layer in thin-film composite tubular membranes with polyethylene glycol for improved separation and antifouling

Ang, Micah Belle Marie Yap; Marquez, Jazmine Aiya D.; Lin, Chun‐Cheng; Yang, Hee-dong; Wang, You-Syuan; Huang, Shu-Hsien; Tsai, Hui-An; Lee, Kueir‐Rarn

doi:10.1016/j.jtice.2021.11.024

Cited by 11 publications

(1 citation statement)

References 40 publications

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“…ВСТУП. Наразі все більшого поширен ня набувають трубчасті полімерні мікро фільтраційні мембрани, які виготовляють з еластичних полімерів: поліетерсульфо ну [1], поліпропілену [2] або полівініліден фториду [3]. Це пов'язано з можливістю регулювання ефективності мембранного розділення шляхом контролю довжини трубок без виготовлення нового мембран ного модуля.…”

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Effect of Polymer Modifier on the Morphological and Separation Properties of Asymmetric Microfiltration Membranes

Magalhaes-Ghiotto,

Molina,

Kudelko

et al. 2023

Ukr. Chem. Journ.

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Modifying membranes is a common approach to improve their separation ability. In this work, a series of the membranes, which reject colloidal particles of a wide diapason of their size, was obtained by modifying acetylcellulose microfiltration membranes with such rigid polymer as polymetylmetacrilate. Modifying was carried out by precipitation of the polymer in the membrane pores, the deposition occurred from the solutions of different concentrations. Other way was multistage modifying membranes with a solution of the same concentration. Depending on the modifying conditions, the content of polymetylmetacrilate in the membrane was 12–44 %. Morphology of the composite membranes was investigated by optical and scanning electron microscopy. Water test was also performed at 0.5–2 bar. The membranes obey Darcy law in this pressure diapason: thus, the pore radius can be approximately estimated from the Hagen – Poiseuille equation (18–63 nm). Moreover, the modifier minimizes the membrane compression: a decrease of the permeate flux is 19 % (pristine membrane) and 8% for membranes containing high amount of the modifier. Colloidal solutions of water-soluble linear polymer, vegetable protein and sol of hydrated iron oxide were also used for the membrane testing. The selectivity of composite membranes enhances in the row: polyvinylpyrollidone < iron oxide < albumin. In the case of vegetable protein, the membrane selectivity is 30–91% depending on the modifier content. The membrane with highest separation ability was used for clarification of goiaba juice: the selectivity towards total solids was found to reach 33–73%. The permeate can be used for the production of beverages, the concentrate is recommended for confectionery industry. Polymethylmetacrylate can be recommended for the membrane modifying as a binding component in the composite containing also hydrophilic agent.

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Effect of Polymer Modifier on the Morphological and Separation Properties of Asymmetric Microfiltration Membranes

Magalhaes-Ghiotto,

Molina,

Kudelko

et al. 2023

Ukr. Chem. Journ.

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Green‐Based Modifications of Polyethylene Surfaces Enhancing Antifouling Properties in Water‐Related Systems

Vieira,

Rodríguez‐Lorenzo,

Garrido‐Maestu

et al. 2023

Adv Materials Technologies

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The effects of fouling in plastics, such as polyethylene (PE), can have a major economic impact due to tube clogging and other issues. Surface properties, both chemical and physical, can substantially influence biofilm formation, so developing antifouling materials through engineering these properties is very promising. In this work, two main approaches are evaluated for reducing the fouling on PE surfaces: chemical modification with green coating (polyethylene glycol (PEG) and different chitosan nanoparticles (CS NPs)) and physical modification with distinct micro‐topographies. First, the antibacterial adhesion is tested with Escherichia coli. The results reveal that CS NPs result in a considerable decrease in adhesion depending on which source of chitosan is used. PEG coating only reduced adhesion by 26%, while CS NPs with a high molecular weight (CS3) decreased adhesion by 88% in relation to non‐modified surfaces. Moreover, lozenges topographic modification (T2) has the highest effect on the bacteria adhesion within the physically‐modified PE surfaces. Finally, CS3 and T2 surfaces are tested in water samples in dynamic conditions for 27 days and results showed lower bacterial adhesion than unmodified surfaces. Overall, both strategies offer eco‐friendly and cost‐effective solutions for preventing fouling and extending the lifetime of polymeric surfaces for environmental applications.

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High flux and selectivity of poly(m-phenylene isophthalamide) loose nanofiltration membrane prepared by mussel-inspired co-deposition for dye/salt separation

Chen,

Wu,

Yang

et al. 2024

Iran Polym J

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Modifying the surface of active polyamide layer in thin-film composite tubular membranes with polyethylene glycol for improved separation and antifouling

Cited by 11 publications

References 40 publications

Effect of Polymer Modifier on the Morphological and Separation Properties of Asymmetric Microfiltration Membranes

Effect of Polymer Modifier on the Morphological and Separation Properties of Asymmetric Microfiltration Membranes

Green‐Based Modifications of Polyethylene Surfaces Enhancing Antifouling Properties in Water‐Related Systems

High flux and selectivity of poly(m-phenylene isophthalamide) loose nanofiltration membrane prepared by mussel-inspired co-deposition for dye/salt separation

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Modifying the surface of active polyamide layer in thin-film composite tubular membranes with polyethylene glycol for improved separation and antifouling

Cited by 11 publications

References 40 publications

Effect of Polymer Modifier on the Mor­pho­logical and Separation Properties of Asymmetric Microfiltration Membranes

Effect of Polymer Modifier on the Mor­pho­logical and Separation Properties of Asymmetric Microfiltration Membranes

Green‐Based Modifications of Polyethylene Surfaces Enhancing Antifouling Properties in Water‐Related Systems

High flux and selectivity of poly(m-phenylene isophthalamide) loose nanofiltration membrane prepared by mussel-inspired co-deposition for dye/salt separation

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Product

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Effect of Polymer Modifier on the Morphological and Separation Properties of Asymmetric Microfiltration Membranes

Effect of Polymer Modifier on the Morphological and Separation Properties of Asymmetric Microfiltration Membranes