A novel polyurethane-polydimethylsiloxane/polylactic acid electrospinning fiber membrane for oil/water separation

Chen, Xing; Song, Xiaofeng; Chen, Juanfen; Chen, Youhua; Yu, Wanting; Liu, Yihan

doi:10.1016/j.colsurfa.2023.131445

Cited by 22 publications

(9 citation statements)

References 40 publications

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“…This can be explained by using eq , where n -hexane and petroleum ether have smaller γ values and require less driving force to permeate through. Carbon tetrachloride has a larger γ value, but its higher density facilitates penetration through surface tension . However, due to its higher γ value and viscosity, olive oil requires more driving force and takes longer to penetrate, resulting in a higher TOC value.…”

Section: Resultsmentioning

confidence: 99%

“…Krasian et al showed good oil–water separation properties by introducing MoS 2 and WS 2 to the formation of PLA fibrous mats . However, upon the introduction of these nanofillers to the fiber membrane, due to their weak bonding energy, they are usually easy to separate from PLA during the separation process and thus enter into the oil and water to cause secondary contamination and impact the stability of the hybrid fiber membrane …”

Section: Introductionmentioning

confidence: 99%

“…21 However, upon the introduction of these nanofillers to the fiber membrane, due to their weak bonding energy, they are usually easy to separate from PLA during the separation process and thus enter into the oil and water to cause secondary contamination and impact the stability of the hybrid fiber membrane. 22 Poly(ε-caprolactone) (PCL), a biodegradable hydrophobic polymer, exhibits commendable biocompatibility and is capable of markedly enhancing the mechanical properties of PLA when blended with various polymers. 23,24 Poly-(tetrahydrofuran) (PTHF), a linear hydrophobic polyether elastomer, is synthesized via a living cationic ring-opening polymerization of tetrahydrofuran.…”

Section: Introductionmentioning

confidence: 99%

“…25,26 The recent focus has shifted toward the ring-opening copolymerization of p-toluenesulfonyl isocyanate (TSI) with epichlorohydrin (ECH), yielding a hydrophobic polyurethane characterized by its outstanding biocompatibility, commendable biodegradability, and robust stability. 22,27 Consequently, a gentle ring-opening copolymerization of TSI with ECH, facilitated by PTHF and catalyzed by a Schiff base, was employed to synthesize a PU−PTHF−PU triblock hydrophobic polymer. This polymer, adeptly blended with PCL and poly(L-lactic acid) (PLLA) in trichloromethane, yielded fiber membranes via electrospinning, characterized by their pronounced hydrophobicity and superior mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

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Polymer PU–PTHF–PU Significantly Enhances the Mechanical Properties of Poly(lactic acid) Matrix Oil–Water Separation Fiber Membranes

Chen,

Zhang,

Song

et al. 2024

ACS Appl. Polym. Mater.

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As the global economy continues to expand, the issue of oily wastewater pollution has garnered significant attention. Consequently, this paper reports a poly(lactic acid)-based coblended fiber membrane for oil− water separation. The synthesis of a polyurethane−poly(tetrahydrofuran)− polyurethane (PU−PTHF−PU) polymer at 25 °C and its incorporation at 20 wt % into fibrous membranes resulted in a water contact angle of 138°. The coblended fibrous membranes exhibited a tensile strength of 8.05 MPa and an elongation at break of 46.53%, simultaneously improving the rigidity and toughness of the fiber membrane, endowing the poly(L-lactic acid) (PLLA) fibrous membranes with good hydrophobicity and mechanical properties. Featuring a maximum permeate flux of 3898 L•m −2 •h −1 , an oil recovery efficiency of 99.4%, and outstanding stability and durability, the PU−PTHF− PU/PCL/PLLA [PCL = poly(ε-caprolactone)] fibrous membrane represents an ideal solution as an all-biobased biodegradable membrane for oil−water separation.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Polymer PU–PTHF–PU Significantly Enhances the Mechanical Properties of Poly(lactic acid) Matrix Oil–Water Separation Fiber Membranes

Chen,

Zhang,

Song

et al. 2024

ACS Appl. Polym. Mater.

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“…Hence, the incorporation of nanostructured materials could not just give a high oil retention rate but also increase water permeability (Krishnan et al, 2022). In addition, polyurethane-co-polydimethylsiloxane/polylactic acid exhibited superhydrophobicity and demonstrated high oil/water separation efficiency (Chen et al, 2023).…”

Section: Oil Removalmentioning

confidence: 99%

Recent advances of copolymer for water treatment

Alruwais,

Adeosun

2024

Water Environment Research

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Increasing water pollution due to anthropogenic activities prompts the quest for an effective water treatment method. Polymeric materials have gained attention as adsorbents for water purification. Membranes are majorly made from homopolymeric materials. However, recent studies have focused on using copolymeric materials for improved performance. In this review, the basics of copolymerization including various types of copolymers, synthetic approaches, and their applications in various water pollutants removal are discussed in detail. Advances in water treatment technology using copolymeric materials as adsorbent/membranes in the last 4 years are covered with insights into the future outlook and areas of improvement in terms of copolymer composites for water treatment. Studies from the literature did not only reveal effectiveness of copolymer as a flocculant/antifouling materials and in removal of selective toxic metals, oil, and microbes but also demonstrated recyclability of the copolymer sorbents/membrane. Full exploration of unique copolymer textural and structural properties could lead to great advancement in water treatment process.Practitioner Points The copolymer types and synthetic methods are discussed. Application of copolymer as adsorbent/membranes for water treatment is presented. Recent advances show good pollutants removal for toxic metals, oil, and organics. Copolymer composites have great potential as adsorbent/membranes for future use in water treatment processes.

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