Synthesis and characterization of polymer‐filled nonwoven membranes

Jung, Ki-Hyun; Pourdeyhimi, Behnam; Zhang, Xiangwu

doi:10.1002/app.32611

Cited by 5 publications

(6 citation statements)

References 27 publications

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“…Chemical crosslinking disturbs the interactions between ionic species, and therefore, it improves polymer chain flexibility [28,29]. It was reported that crosslinked PAMPS membranes exhibit higher permeability than linear ones [30]. A long High water permeability of polyelectrolytes is caused by the presence of hydrophilic ionic groups, such as the sulfonic acid for PAMPS.…”

Section: Resultsmentioning

confidence: 99%

“…Crosslinking has been used to control mechanical, chemical, and thermal stability by tailoring polymer chain flexibility and crystallinity [31]. It was reported that crosslinking polyelectrolytes increases their vapor permeability due to the improved polymer chain flexibility [30]. Moreover, PAMPS exhibits a lower permeability than other polyelectrolytes since hydrogen bonding between amide groups enhances the intermolecular interaction of polymer chains [32].…”

Section: Resultsmentioning

confidence: 99%

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Selective Vapor Permeation Behavior of Crosslinked PAMPS Membranes

Son

Kim

et al. 2020

Polymers

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The effect of crosslinking on vapor permeation behavior of polyelectrolyte membranes was studied. Poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPS) membranes were crosslinked by using crosslinkers with different lengths between the reactive ends. Crosslinked membranes with a longer crosslinking length showed lower water vapor permeability due to the lower sorption coefficient. It was also shown that the permeation behavior of PAMPS membranes was more affected by sorption than diffusion. For chemical protection applications, the ratio of water over chemical warfare agent permeability (i.e., selectivity) was measured. Due to the high water solubility of polyelectrolytes, crosslinked PAMPS allowed for the selective permeation of water over harmful chemical vapor, showing a selectivity of 20. The addition of electrospun nylon nanofibers in the membranes significantly improved the selectivity to 80, since the embedded nanofibers effectively reduced both diffusion and sorption coefficients of chemical warfare agents.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Selective Vapor Permeation Behavior of Crosslinked PAMPS Membranes

Son

Kim

et al. 2020

Polymers

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“…In the present study, polyurethane (PU) and poly (2-acryloylamido-2-methylpropanesulphonic acid) (PAMPS) were used as polymers with hydrophobic and hydrophilic properties, respectively. PAMPS is a water-soluble and ionic polymer with a high degree of hydrophilicity, and is often touted as a superabsorbent material for PC [17,18] and wound dressing [19,20,21] applications. The sulfonate group of PAMPS gives the polymer a degree of hydrophobicity and an anionic quality.…”

Section: Introductionmentioning

confidence: 99%

“…The effect of graphene oxide (GO) on the sensing behavior of final structures has also been investigated. Due to its excellent mechanical, thermal, and electrical properties, and the presence of hydrophilic groups (e.g., hydroxyl, carbonyl) on the surface, GO can improve the water vapor permeability and adsorption of water of nanocomposites [17,18]. Hua and coworkers showed that polyvinyl alcohol (PVA) combined with GO exhibited higher pH sensitivity, and in hydrogel form can be used for loading and selectively releasing drugs at physiological pH [19].…”

Section: Introductionmentioning

confidence: 99%

Development of Highly pH-Sensitive Hybrid Membranes by Simultaneous Electrospinning of Amphiphilic Nanofibers Reinforced with Graphene Oxide

Gorji

Sadeghianmaryan

Rajabinejad

et al. 2019

JFB

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Nanofibrous-based pH sensors have shown promise in a wide range of industrial and medical applications due to their fast response time and good mechanical properties. In the present study, we fabricated pH-sensitive sensors of nanofibrous membranes by electrospinning polyurethane (PU)/poly 2-acrylamido-2-methylpropanesulfonic acid (PAMPS)/graphene oxide (GO) with indicator dyes. The morphology of the electrospun nanofibers was examined using scanning electron microscopy (SEM). The effect of hydrophilic polymer ratio and concentration of GO on the sensing response time was investigated. The sensitivity of the membranes was studied over a wide pH range (1–8) in solution tests, with color change measured by calculating total color difference using UV-vis spectroscopy. The membranes were also subjected to vapor tests at three different pH values (1, 4, 8). SEM results show the successful fabrication of bimodal fiber diameter distributions of PU (mean fiber diameter 519 nm) and PAMPS (mean fiber diameter 78 nm). Sensing response time decreased dramatically with increasing concentrations of PAMPS and GO. The hybrid hydrophobic/hydrophilic/GO nanofibrous membranes are capable of instantly responding to changes in solution pH as well as detecting pH changes in chemical vapor solution in as little as 7 s.

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“…The PU electrospun nanofibers have been synthesized with diameters in the range of 200–500 nm. PAPMS as a hydrophilic and ionic polymer have been used in protective clothing [11–13]. Kim and coworkers reported fiber with average diameter of 60 nm in optimum process parameters.…”

Section: Introductionmentioning

confidence: 99%

Breathable-windproof membrane via simultaneous electrospinning of PU and P(AMPS-GO) hybrid nanofiber: Modeling and optimization with response surface methodology

Gorji

Maryan

2017

Journal of Industrial Textiles

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In this work, a new bimodal fiber diameter distributed structure composed of polyurethane (PU) and poly (2-acrylamido-2-methylpropane sulfonic acid) (PAMPS) hybrid nanofibers was synthesized and used as a breathable-windproof membrane (BWM). Graphene oxide (GO) was compounded with AMPS through polymerization process to increase the membrane performance. Water vapor permeability (WVP), air permeability (AP), and tensile strength at break were evaluated as BWMs performance. The effects of PU and PAMPS fiber density and GO loading on the membrane performance were modeled and analyzed using the response surface methodology (RSM). The results show that when PU fiber density declined and GO loading increased, WVP of membranes improved. Also, an increase in PU and PAMPS coverage density led to a decrease in AP. Tensile strength at break increased as PU fiber density and GO loading rose. RSM also predicted that with using 6.07 g/m2 PU fiber density, 2.40 g/m2 PAMPS fiber density, and 2% GO loading, the optimum performance of BWM, that is, the maximum order of tensile strength (18.45 MPa) and WVP (848.22 g/m2/day) and the minimum order of AP (15.66 lit/m2/s), can be obtained. The results of experimental tests are in good agreement with predicted values by RSM.

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Synthesis and characterization of polymer‐filled nonwoven membranes

Cited by 5 publications

References 27 publications

Selective Vapor Permeation Behavior of Crosslinked PAMPS Membranes

Selective Vapor Permeation Behavior of Crosslinked PAMPS Membranes

Development of Highly pH-Sensitive Hybrid Membranes by Simultaneous Electrospinning of Amphiphilic Nanofibers Reinforced with Graphene Oxide

Breathable-windproof membrane via simultaneous electrospinning of PU and P(AMPS-GO) hybrid nanofiber: Modeling and optimization with response surface methodology

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