Supercritical Phase Inversion: A Powerful Tool for Generating Cellulose Acetate-AgNO3 Antimicrobial Membranes

Baldino, Lucia; Cardea, Stefano; Reverchon, Ernesto

doi:10.3390/ma13071560

Cited by 6 publications

(4 citation statements)

References 39 publications

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“…For example, non-solvent-induced phase inversion [ 61 , 62 ] uses a different approach to produce a gel-like structure. Conversely, supercritical fluid phase inversion [ 63 ] and thermally induced phase inversion [ 62 ] employ alternative methods to induce the phase change from a solution to a solid, porous membrane. These new techniques have shown promising results and have the potential to provide high-quality, high-performance nanoparticle-embedded polymers for use in a variety of applications.…”

Section: Development and Production Of Nano-based Polymeric Membranesmentioning

confidence: 99%

“…These new techniques have shown promising results and have the potential to provide high-quality, high-performance nanoparticle-embedded polymers for use in a variety of applications. In addition, the parameters that influence the phase inversion process, including the choice of solvent and polymer, are under continuous investigation to optimize membrane production [ 63 ]. This includes casting conditions such as temperature and pressure.…”

Section: Development and Production Of Nano-based Polymeric Membranesmentioning

confidence: 99%

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Nanoparticle-Embedded Polymers and Their Applications: A Review

Khdary,

Almuarqab,

El Enany

2023

Membranes

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There has been increasing interest in the study and development of nanoparticle-embedded polymeric materials and their applications to special membranes. Nanoparticle-embedded polymeric materials have been observed to have a desirable compatibility with commonly used membrane matrices, a wide range of functionalities, and tunable physicochemical properties. The development of nanoparticle-embedded polymeric materials has shown great potential to overcome the longstanding challenges faced by the membrane separation industry. One major challenge that has been a bottleneck to the progress and use of membranes is the balance between the selectivity and the permeability of the membranes. Recent developments in the fabrication of nanoparticle-embedded polymeric materials have focused on how to further tune the properties of the nanoparticles and membranes to improve the performance of the membranes even further. Techniques for improving the performance of nanoparticle-embedded membranes by exploiting their surface characteristics and internal pore and channel structures to a significant degree have been incorporated into the fabrication processes. Several fabrication techniques are discussed in this paper and used to produce both mixed-matrix membranes and homogenous nanoparticle-embedded polymeric materials. The discussed fabrication techniques include interfacial polymerization, self-assembly, surface coating, and phase inversion. With the current interest shown in the field of nanoparticle-embedded polymeric materials, it is expected that better-performing membranes will be developed soon.

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Section: Development and Production Of Nano-based Polymeric Membranesmentioning

confidence: 99%

Section: Development and Production Of Nano-based Polymeric Membranesmentioning

confidence: 99%

Nanoparticle-Embedded Polymers and Their Applications: A Review

Khdary,

Almuarqab,

El Enany

2023

Membranes

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“…It was reported that the typical commercial microfiltration CA-based membrane has a pore size of 0.470 µm [30], most likely due to some differences in fabrication parameters. Indeed, further exploration can still be done to fine-tune the properties of a cigarette butt CA-based membrane according to the required specifications, as suggested elsewhere [31][32][33]. Figure 4 depicts the mean pore size distribution of CA, PSF, and plain PVDF analyzed with CFP.…”

Section: Membrane Pore Size and Distributionmentioning

confidence: 99%

Cigarette Butt Waste as Material for Phase Inverted Membrane Fabrication Used for Oil/Water Emulsion Separation

et al. 2021

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The increasing rate of oil and gas production has contributed to a release of oil/water emulsion or mixtures to the environment, becoming a pressing issue. At the same time, pollution of the toxic cigarette butt has also become a growing concern. This study explored utilization of cigarette butt waste as a source of cellulose acetate-based (CA) polymer to develop a phase inverted membrane for treatment of oil/water emulsion and compare it with commercial polyvinylidene difluoride (PVDF) and polysulfone (PSF). Results show that the CA-based membrane from waste cigarette butt offers an eco-friendly material without compromising the separation efficiency, with a pore size range suitable for oil/water emulsion filtration with the rejection of >94.0%. The CA membrane poses good structural property similar to the established PVDF and PSF membranes with equally asymmetric morphology. It also poses hydrophilicity properties with a contact angle of 74.5°, lower than both PVDF and PSF membranes. The pore size of CA demonstrates that the CA is within the microfiltration range with a mean flow pore size of 0.17 µm. The developed CA membrane shows a promising oil/water emulsion permeability of 180 L m−2 h−1 bar−1 after five filtration cycles. However, it still suffers a high degree of irreversible fouling (>90.0%), suggesting potential future improvements in terms of membrane fouling management. Overall, this study demonstrates a sustainable approach to addressing oil/water emulsion pollution treated CA membrane from cigarette butt waste.

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“…Moreover, a subsequent membrane drying process is not required. The membrane morphology can be controlled by changing the operating conditions [ 100 ] and compounds can be included in the membrane. This process starts with producing polymer solutions by solubilizing the polymer in an organic solvent that should have a proper affinity with scCO 2 .…”

Section: Biopesticide Encapsulation Based On Supercritical Fluid Technologymentioning

confidence: 99%

Biopesticide Encapsulation Using Supercritical CO2: A Comprehensive Review and Potential Applications

2021

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As an alternative to synthetic pesticides, natural chemistries from living organisms, are not harmful to nontarget organisms and the environment, can be used as biopesticides, nontarget. However, to reduce the reactivity of active ingredients, avoid undesired reactions, protect from physical stress, and control or lower the release rate, encapsulation processes can be applied to biopesticides. In this review, the advantages and disadvantages of the most common encapsulation processes for biopesticides are discussed. The use of supercritical fluid technology (SFT), mainly carbon dioxide (CO2), to encapsulate biopesticides is highlighted, as they reduce the use of organic solvents, have simpler separation processes, and achieve high-purity particles. This review also presents challenges to be surpassed and the lack of application of SFT for biopesticides in the published literature is discussed to evaluate its potential and prospects.

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Supercritical Phase Inversion: A Powerful Tool for Generating Cellulose Acetate-AgNO3 Antimicrobial Membranes

Cited by 6 publications

References 39 publications

Nanoparticle-Embedded Polymers and Their Applications: A Review

Nanoparticle-Embedded Polymers and Their Applications: A Review

Cigarette Butt Waste as Material for Phase Inverted Membrane Fabrication Used for Oil/Water Emulsion Separation

Biopesticide Encapsulation Using Supercritical CO2: A Comprehensive Review and Potential Applications

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