Synthesis of coated solvent impregnated resins by PVA cross-linked with vapor-phase glutaraldehyde for adsorption of vanadium (IV)

Bao, Shenxu; Chen, Bo; Zhang, Yimin; Tang, Yongping

doi:10.1016/j.reactfunctpolym.2018.04.015

Cited by 29 publications

(7 citation statements)

References 32 publications

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“…The homogeneous brightness and the distribution of C, O, and N prove that PPy is not only deposited on the surface of the composite film but also distributed evenly in the entire PVA matrix to form an interpenetrating network of PPy and PVA. 39 The SKPM test has also been performed to see the percolation path changes. According to the characterization of the surface potential, it can be found that the bright part represents the aggregation region of PPy which exhibits better conductivity to allow electrons to be transmitted.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…In order to further analyze the distribution of PPy, elemental mappings of C, O, and N are determined (Figure F). The homogeneous brightness and the distribution of C, O, and N prove that PPy is not only deposited on the surface of the composite film but also distributed evenly in the entire PVA matrix to form an interpenetrating network of PPy and PVA …”

Section: Results and Discussionmentioning

confidence: 99%

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Using Stretchable PPy@PVA Composites as a High-Sensitivity Strain Sensor To Monitor Minute Motion

Shi¹,

Han²,

Chang³

et al. 2020

ACS Appl. Mater. Interfaces

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With the rapid development of flexible and wearable electronic devices, research on high-sensitivity strain sensors has been attracting much attention. Here, glutaraldehyde is used as a cross-linking reagent to precross-link poly(vinyl alcohol); then FeCl 3 •6H 2 O is added into the precross-linked poly(vinyl alcohol) to obtain composite films of FeCl 3 @PVA after gelatinization and freeze drying. Elastic conductive films of polypyrrole@poly(vinyl alcohol) (PPy@PVA) are prepared by immersing FeCl 3 @PVA into a solution of pyrrole in acetonitrile and water to complete the polymerization in situ. The effects of the concentrations of glutaraldehyde and FeCl 3 •6H 2 O on the film's structure and properties have been studied in detail; the results show that the strain sensor prepared from the optimized film has excellent stretchability (strain up to 309.5%), mechanical property (tensile strength of 32.8 MPa), and relatively high sensitivity (gauge factor can reach 5.07 under 1.0% strain). It can be used to detect various tiny physiological signals, for example, detecting the number of pulse beats, bending of the knuckles at different frequencies, and recognizing the pronunciation of different words by vocal cord vibration. These good properties mean that this kind of PPy@PVA strain sensor has great application prospects in physiological monitoring.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

Using Stretchable PPy@PVA Composites as a High-Sensitivity Strain Sensor To Monitor Minute Motion

Shi¹,

Han²,

Chang³

et al. 2020

ACS Appl. Mater. Interfaces

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show abstract

“…Among various kinds of crosslinking agents, GTA is widely used according to its accessibility and inexpensiveness. Successful crosslinking of PVA [30,31] and gelatin [32,33] by using GTA were reported, whereas the crosslinking of alginate was performed by using CaCl 2 [34]. However, in order to minimize the toxicity of GTA that might be remained in the samples, a vapor treatment method was performed instead of direct immersion to reduce the contact between samples and GTA.…”

Section: Resultsmentioning

confidence: 99%

Ciprofloxacin-loaded alginate/poly (vinyl alcohol)/gelatin electrospun nanofiber mats as antibacterial wound dressings

Thairin

Wutticharoenmongkol

2021

Journal of Industrial Textiles

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Herein, ciprofloxacin (CIP)-loaded alginate/poly (vinyl alcohol)/gelatin (SPG) (CIP–SPG) nanofiber mats were successfully fabricated by electrospinning. The average fiber diameters of the mats before and after crosslinking were in the range of 190–260 and 385–484 nm, respectively. The chemical integrity of CIP remained intact after encapsulation into the mats. The degree of weight loss and water swelling decreased with an increase in the gelatin content of the electrospun nanofiber mats. A release study was carried out by total immersion and diffusion methods using phosphate buffer as a release medium. Burst release of CIP was observed in case of the total immersion method, while a more sustained release was observed in case of the diffusion method. The maximum amounts of CIP released during total immersion and diffusion were in the range of 70–90% and 72–85%, respectively. For both the total immersion and diffusion methods, the released amounts of CIP decreased and the release slowed down with an increase in the gelatin content; this result is consistent with the weight loss and water swelling values. The Young’s modulus increased, while the tensile strength and strain at break decreased with an increase in the gelatin content. The CIP–SPG nanofiber mats were slightly toxic to L929 mouse fibroblasts as evaluated by indirect cytotoxicity assay. The electrospun CIP–SPG nanofiber mats exhibited excellent antimicrobial activity against Staphylococcus aureus and Escherichia coli. These results reveal that the electrospun CIP–SPG nanofiber mats are potentially promising materials for wound healing applications.

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“…However, the coating film of CSIRs protected the oil droplets, but the metal ion transfer in water was hindered and the adsorption equilibrium time was lengthened at the same time. [ 17 ] Therefore, the use of ″emulsion″ + ″polymer″ to immobilize the extractant might be a solution to the loss of extractant and low mass transfer efficiency. [ 18 ] Pickering emulsions stabilized by both solid particles and surfactants have higher stability than conventional emulsions and Pickering emulsions stabilized by solid particles only.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Novel Sorbent Based on Pickering Emulsions Polymerization Method for Encapsulating Extractants and the Adsorption of Indium in an Aqueous Solution

Chen

Gao

Zhao

et al. 2023

Macro Chemistry & Physics

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The recovery of indium from impregnating resins in water is usually limited by the poor bonding of the extractant to the carrier resin. Pickering emulsion hydrogels (PEHGs) encapsulating extractant bis(2-ethylhexyl) phosphate are prepared by oil-in-water Pickering emulsions polymerization method using polyvinyl alcohol and sodium alginate as continuous phases and nano-SiO 2 and alkylphenol ethoxylates-10 (OP-10) as emulsifiers. PEHGs are used to recover trivalent In(III) from water to study its encapsulation and adsorption properties. Pickering emulsions are characterized by optical microscopy. PEHGs are characterized by Fourier transform infrared spectrometer and scanning electron microscopy. The results showed that the stabilization time of Pickering emulsions improved from 3 min to ≈14 days after the addition of 5 wt.% of OP-10. The internal structure of 4-Pickering emulsion hydrogels (4-PEHGs) prepared from Pickering emulsions co-stabilized by nano-SiO 2 and OP-10 is changed from core-shell to honeycomb structure and no oil phase leakage occurred. In(III) adsorption is carried out on 4-PEHGs. The results showed that the maximum adsorption of In(III) in water by 4-PEHGs is 18.03 mg g −1 . The adsorption process of In(III) is controlled by chemisorption. This study showed that 4-PEHGs can be used as an effective adsorbent for the recovery of indium in water.

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Synthesis of coated solvent impregnated resins by PVA cross-linked with vapor-phase glutaraldehyde for adsorption of vanadium (IV)

Cited by 29 publications

References 32 publications

Using Stretchable PPy@PVA Composites as a High-Sensitivity Strain Sensor To Monitor Minute Motion

Using Stretchable PPy@PVA Composites as a High-Sensitivity Strain Sensor To Monitor Minute Motion

Ciprofloxacin-loaded alginate/poly (vinyl alcohol)/gelatin electrospun nanofiber mats as antibacterial wound dressings

Preparation of a Novel Sorbent Based on Pickering Emulsions Polymerization Method for Encapsulating Extractants and the Adsorption of Indium in an Aqueous Solution

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