Towards high-performance hybrid hydrophilic membranes: chemical anchoring of hydroxyl-rich nanoparticles on PVDF membranes via a silane coupling agent

Zhou, Qing; Xu, Shumao; Zhu, Chenyang; Cao, Boyu; Kausar, Fahmeeda; Xu, Anhou; Yuan, Wang Zhang; Zhang, Yongming

doi:10.1007/s10853-017-1313-1

Cited by 13 publications

(4 citation statements)

References 48 publications

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“…Jin and co-workers 15 synthesized sulfobetaine zwitterionic nanohydrogels that were grafted onto the PVDF MF membrane surface, endowing the modified PVDF membrane with a superhydrophilic and nearly zero oil adhesion property. Zhang and co-workers 16 branes. The resulting hybrid membranes exhibited superior antifouling performance over the pristine PVDF membrane owing to the outstanding hydrophilicity with high stability.…”

Section: Introductionsupporting

confidence: 71%

“…Jin and co-workers synthesized sulfobetaine zwitterionic nanohydrogels that were grafted onto the PVDF MF membrane surface, endowing the modified PVDF membrane with a superhydrophilic and nearly zero oil adhesion property. Zhang and co-workers designed a versatile materials platform to firmly anchor hydroxyl-rich nanomaterials (TiO 2 , SiO 2 , β-FeOOH-1, etc.) by grafting γ-methacryloxy propyl trimethoxy silane onto PVDF membranes.…”

Section: Introductionmentioning

confidence: 99%

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Antifouling PVDF Membrane by Surface Covalently Anchoring Functionalized Graphene Quantum Dots

Shao

et al. 2020

Ind. Eng. Chem. Res.

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To construct antifouling polyvinylidene fluoride (PVDF) membranes, L-aspartic acid (L-asp)-modified graphene quantum dots (AGQDs) were covalently anchored on the PVDF membrane surface via a three-step modification method. The pristine PVDF membrane was first dehydrofluorinated to generate internal double bonds under the alkali solution. Then diamine (EDA) and two types of hyperbranched polyethyleneimines (HPEI) were grafted on the alkali-treated surfaces through the Michael addition reaction. Finally, the as-synthesized AGQDs were chemically immobilized on the amine-grafted surfaces via an amidation reaction. The surface morphologies and surface properties of the pristine and modified PVDF membranes were comprehensively characterized by X-ray photoelectron spectroscopy, ATR-FTIR, scanning electron microscope, atomic force microscope, and dynamic antifouling experiments. Meanwhile, the grafting efficiency of AGQDs were found to be strongly dependent on the type of amine used. Compared with EDA and HPEI L , HPEI H with a high molecular weight preferred to be grafted on membrane surfaces rather than membrane pores because of its larger steric hindrance, which facilitate the covalent anchorage of AGQDs on the HPEI H -grafted surface. Thanks to the high grafting efficiency of AGQDs, the resulting PVDF-HPEI H -AGQDs membrane possessed the excellent hydrophilicity (water contact angle as low as 58.7°). Most importantly, this membrane demonstrated superior antifouling performance over the pristine PVDF membrane in the presence of either the positively charged foulant (e.g., lysozyme) or the negatively charged foulant (e.g., bovine serum albumin). This novel membrane fabrication approach developed in this study provides a promising solution to covalently anchor hydrophilic nanoparticles on the PVDF membrane surface for antifouling enhancement.

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Section: Introductionsupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Antifouling PVDF Membrane by Surface Covalently Anchoring Functionalized Graphene Quantum Dots

Shao

et al. 2020

Ind. Eng. Chem. Res.

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“…The quick‐drying properties of wraps are affected by the internal structure of the gel as well as the temperature and humidity of the ambient environment [75]. These impacts occur due to the presence of hydrophilic groups on carrageenan molecules, such as glycosidic bonds [76], hydroxyl groups [77] and sulfate groups [78]; these groups can bind H + and OH − in aqueous solutions when there is no cross‐linking among carrageenan molecules, at which time the formed gels have better water retention properties. However, the number of hydrophilic groups that can bind to H + and OH − decrease when carrageenan molecules are cross‐linked within or among molecules [79].…”

Section: Preparation Methods and Mechanization Of Carrageenan Wrapsmentioning

confidence: 99%

Progress of Carrageenan‐Based Films and Coatings for Food Packaging Applications

Wang,

Guo,

Guo

2024

Packag Technol Sci

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As a polysaccharide extracted from marine red algae, carrageenan has the advantages of biodegradability, nontoxicity and water solubility over petroleum‐based plastics for use as films and coatings for keeping food fresh. Aqueous solutions of carrageenan can be cast into films on plates and then made into food packaging bags, as well as coated directly onto food surfaces, all of which are referred to as ‘wraps’. To overcome the inherent limitations of carrageenan as a packaging material, physical and chemical modifications have been studied. The mechanical, thermal, barrier and antibacterial properties of modified carrageenan make it widely applicable for extending the shelf life of food products and monitoring its freshness. The research progress of carrageenan‐based wraps in recent years has been reviewed in terms of preparation methods, physicochemical properties, gelation mechanisms and applications, and the factors affecting the drying rate of them have been analysed. Finally, applications and future research directions of carrageenan are summarized and discussed to provide useful guidelines for further research.

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“…The modifications have been largely performed to solid polymers, rather than the polymer solution. For example, γ-methacryloxy propyl trimethoxy silane (MPTS) monomer is polymerized (grafted) onto the PVDF solid membrane and then hydroxyl-rich TiO 2 , SiO 2 and β-FeOOH are introduced [ 201 ]. The ceramic NPs were then firmly anchored in the grafted poly-MPTS layer and the ceramic NPs were stable even under ultrasonication for 30 min.…”

Section: Strategies To Fabricate Ceramic-polymer Composite Membranesmentioning

confidence: 99%

Ceramic-Polymer Composite Membranes for Water and Wastewater Treatment: Bridging the Big Gap between Ceramics and Polymers

Kotobuki

Zhang

et al. 2021

Molecules

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Clean water supply is an essential element for the entire sustainable human society, and the economic and technology development. Membrane filtration for water and wastewater treatments is the premier choice due to its high energy efficiency and effectiveness, where the separation is performed by passing water molecules through purposely tuned pores of membranes selectively without phase change and additional chemicals. Ceramics and polymers are two main candidate materials for membranes, where the majority has been made of polymeric materials, due to the low cost, easy processing, and tunability in pore configurations. In contrast, ceramic membranes have much better performance, extra-long service life, mechanical robustness, and high thermal and chemical stabilities, and they have also been applied in gas, petrochemical, food-beverage, and pharmaceutical industries, where most of polymeric membranes cannot perform properly. However, one of the main drawbacks of ceramic membranes is the high manufacturing cost, which is about three to five times higher than that of common polymeric types. To fill the large gap between the competing ceramic and polymeric membranes, one apparent solution is to develop a ceramic-polymer composite type. Indeed, the properly engineered ceramic-polymer composite membranes are able to integrate the advantages of both ceramic and polymeric materials together, providing improvement in membrane performance for efficient separation, raised life span and additional functionalities. In this overview, we first thoroughly examine three types of ceramic-polymer composite membranes, (i) ceramics in polymer membranes (nanocomposite membranes), (ii) thin film nanocomposite (TFN) membranes, and (iii) ceramic-supported polymer membranes. In the past decade, great progress has been made in improving the compatibility between ceramics and polymers, while the synergy between them has been among the main pursuits, especially in the development of the high performing nanocomposite membranes for water and wastewater treatment at lowered manufacturing cost. By looking into strategies to improve the compatibility among ceramic and polymeric components, we will conclude with briefing on the perspectives and challenges for the future development of the composite membranes.

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Towards high-performance hybrid hydrophilic membranes: chemical anchoring of hydroxyl-rich nanoparticles on PVDF membranes via a silane coupling agent

Cited by 13 publications

References 48 publications

Antifouling PVDF Membrane by Surface Covalently Anchoring Functionalized Graphene Quantum Dots

Antifouling PVDF Membrane by Surface Covalently Anchoring Functionalized Graphene Quantum Dots

Progress of Carrageenan‐Based Films and Coatings for Food Packaging Applications

Ceramic-Polymer Composite Membranes for Water and Wastewater Treatment: Bridging the Big Gap between Ceramics and Polymers

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