Electrospun Gelatin Membrane Cross-Linked by a Bis(diarylcarbene) for Oil/Water Separation: A New Strategy To Prepare Porous Organic Polymers

Xi, Yu; Yang, Pengfei; Moloney, Mark G.; Wang, Liang; Xu, Jinku; Wang, Yongqing; Pan, Yunlin

doi:10.1021/acsomega.8b00162

Cited by 14 publications

(4 citation statements)

References 51 publications

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“…In this work, we report the preparation of three types of cotton fibers with hydroxyl, amino, or thioether groups on the surface. Hereinto, the approach to introduce amino groups is a carbene insertion reaction generated by heating, which was reported to be technically convenient and mild for surface modification. − The thioether surface of cotton was obtained by a subsequent amidation with 4-(trifluoromethylthio)benzoyl chloride, which was a nearly quantitative reaction. The coordination of these cotton fibers with Ag NPs by solvent dipping gave the corresponding cotton/Ag NP composite materials.…”

Section: Introductionmentioning

confidence: 99%

Ag NP-Loaded Cotton Fiber Materials: Preparation, Surface Deposition, and Antibacterial Activity with Different Chemical Structures

Pan

Yang

Moloney

et al. 2018

ACS Appl. Bio Mater.

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An amino-substituted bis(aryldiazomethane) was synthesized and used to modify cotton fibers by a carbene insertion reaction. A subsequent amidation of the modified cotton fibers introduced thioether groups onto the surface. Thus, three different types of cotton fibers with hydroxyl, amine, or thioether groups were expected to bind silver nanoparticles (Ag NPs), which were characterized by scanning electron microscopy to show the surface morphology, as well as X-ray photoelectron spectroscopy, energy-dispersive X-ray spectroscopy, and thermogravimetric analysis to quantify the loading of Ag NPs. A bioassay experiment showed antibacterial activity of the modified cotton fibers. The development of these antibacterial cotton fibers not only gave a clear and deep comparison of different silver-binding approaches but also had potential industrial and daily applications for medical textiles.

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Section: Introductionmentioning

confidence: 99%

Ag NP-Loaded Cotton Fiber Materials: Preparation, Surface Deposition, and Antibacterial Activity with Different Chemical Structures

Pan

Yang

Moloney

et al. 2018

ACS Appl. Bio Mater.

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“…To investigate the absorption performance of the super-hydrophobic PSD6S composite, first, 1.5 mL of n -hexane dyed with Sudan blue II was added into a culture plate with 3 mL of deionized water to generate an oil layer on the water; then the PSD6S sample was put into the water/oil system. Moreover, six different kinds of oils with various physical properties including castor oil, carbon tetrachloride (CCl 4 ), pump oil, dichloromethane (CH 2 Cl 2 ), petroleum ether, and n -hexane were employed to study the absorption capacities of the PSD6S samples.…”

Section: Methodsmentioning

confidence: 99%

Decomposable Polyvinyl Alcohol-Based Super-Hydrophobic Three-Dimensional Porous Material for Effective Water/Oil Separation

Wang

Akram

et al. 2018

Langmuir

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The development of the oil industry brings the critical problem of ocean pollution by oil spill or fossil fuels. The use of materials for water/oil separation is one of the effective approaches to solve this crisis. Polyvinyl alcohol (PVA) has been used to prepare water/oil separation materials. Currently, glutaraldehyde has been employed as the cross-linking agent, which is well known to be toxic and environmentally unfriendly. Moreover, it is difficult to deal with the disposal of the Across-linked material. Here, we propose a strategy of fabricating macroporous material which was prepared by PVA and sodium silicate (Na 2 SiO 3 ) in aqueous solution. Following through with the one-step method of sol−gel reaction of hydroxyl groups with trimethoxy(octadecyl)silane, the low surface energy substance was grafted on the macroporous material and a superhydrophobic macroporous membrane for water/oil separation was prepared. As oil sorbent, the as-prepared dried superhydrophobic PVA/Na 2 SiO 3 porous materials (PSD6S) have the adsorption capacity of 1.8−7.0 g/g for oil uptake, which depends on the type of oil liquid. Typically, the separation efficiency of this material could reach more than 99% even after 10 times of use without the help of ambient pressure. It is noteworthy that the as-prepared samples could be easily decomposable and dissolvable completely in acidic medium at a rapid rate.

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“…The active carbene exhibits strong reactivity toward R–H (R = C, − N, , O, S, and B , ) bonds under mild conditions (Scheme B). The diazo and diazirine moiety can be activated thermally, − photochemically, − or under transition-metal-catalyzed conditions, , forming active carbenes to react with organic substrates by R–H activation and insertion. Therefore, we propose a carbene-mediated polymer cross-linking strategy using compounds that contain two or more carbene precursors.…”

Section: Introductionmentioning

confidence: 99%

Carbene-Mediated Polymer Cross-Linking with Diazo Compounds by C–H Activation and Insertion

Yang

Yun

et al. 2022

Macromolecules

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Compared with linear thermoplastic polymers, thermoset polymers with three-dimensional network structures exhibit improved solvent tolerance, heat resistance, and mechanical strength. The radicalmediated process is widely used to cross-link the linear polymer chains; however, this process requires high temperature (>150 °C) or UV irradiation to generate highly energetic radicals, unavoidably leading to undesired side reactions and uncontrolled cross-linking behavior. This work proposes and achieves a carbene-mediated polymer cross-linking with diazo-based compounds by C−H activation and an insertion mechanism under relatively mild conditions. A simple route containing only one or two steps is established to synthesize three generations of diazo-based cross-linkers 1G, 2G, and 3G. The cross-linker 1G exhibits the lowest cross-linking efficiency due to the undesired self-coupling of carbenes. After optimizing the chemical structure and increasing the numbers of diazo moieties, the cross-linking efficiency significantly improves for 2G and 3G cross-linkers. These cross-linkers are applicable for any polymers containing C−H bonds. They are useful in a wide range of applications, from the adhesion of low surface energy ultrahigh molecular weight polyethylene (UHMWPE) to polymer modification by co-cross-linking. This versatile, convenient, and practical carbene-mediated cross-linking strategy provides new opportunities for modification, cross-linking, and adhesion in polymer science.

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Electrospun Gelatin Membrane Cross-Linked by a Bis(diarylcarbene) for Oil/Water Separation: A New Strategy To Prepare Porous Organic Polymers

Cited by 14 publications

References 51 publications

Ag NP-Loaded Cotton Fiber Materials: Preparation, Surface Deposition, and Antibacterial Activity with Different Chemical Structures

Ag NP-Loaded Cotton Fiber Materials: Preparation, Surface Deposition, and Antibacterial Activity with Different Chemical Structures

Decomposable Polyvinyl Alcohol-Based Super-Hydrophobic Three-Dimensional Porous Material for Effective Water/Oil Separation

Carbene-Mediated Polymer Cross-Linking with Diazo Compounds by C–H Activation and Insertion

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