Breathability of Standalone Poly(vinyl alcohol) Nanofiber Webs

Turaga, Uday; Singh, Vinitkumar; Behrens, Rachel L.; Korzeniewski, Carol; Jinka, Sudheer; Smith, Ernest; Kendall, Ronald J.; Ramkumar, S.

doi:10.1021/ie5005465

Cited by 18 publications

(23 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nanofibers demonstrate several outstanding characteristics, for example large surface area to volume ratio, flexibility, and easily modified physical/chemical properties . These amazing characteristics make nanofibers superior candidates for air or water filtration, medical applications, lithium ion battery applications, piezoelectric products, nano‐sensors, skin masks, and tissue engineering scaffolds …”

Section: Introductionmentioning

confidence: 99%

Tensile testing and fracture mechanism analysis of polyvinyl alcohol nanofibrous webs

Lou

Kendall

et al. 2020

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

A tensile properties testing study was conducted to understand the influence of thickness, cross-head speed (speed of testing), gauge length (GL; specimen test length), and sample shape on important tensile properties of polyvinyl alcohol (PVA) nanofiber webs. The effects of each testing parameter on load at break, extension at break, Young's modulus, and tensile stress-strain curve of PVA nanofiber webs are analyzed. The Welch two sample t-tests show the significant difference among tested data. Using interaction plots, two-way analysis of variance, and margin mean plots, the interaction effects among testing parameters have been analyzed. Of all the factors, cross-head speed, the interaction among GL, and sample thickness (GL: Thickness) and the interaction among GL, testing speed and sample thickness (GL: Speed: Thickness) have significant influence on the tensile properties of PVA nanofiber webs. Moreover, the hypothesized model of mechanism of tensile strain-stress curve of PVA nanofiber webs has been proposed. Based on the model, the tensile strain-stress curve can be split into three stages: linear elastic, partial break up, and complete breakage. This study will provide a better understanding of tensile testing parameters' effects and their interaction effects on the tensile properties of nanowebs.

show abstract

Section: Introductionmentioning

confidence: 99%

Tensile testing and fracture mechanism analysis of polyvinyl alcohol nanofibrous webs

Lou

Kendall

et al. 2020

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…WVTR and air permeability were evaluated for indicating the thermal comfort property. The porosity and pore size of membranes contributed to the water vapor and air transferring through the macroporous membranes . Higher porosity could supply small resistance for moisture and air to diffuse rapidly through the membranes .…”

Section: Resultsmentioning

confidence: 99%

“…The porosity and pore size of membranes contributed to the water vapor and air transferring through the macroporous membranes. [27,28] Higher porosity could supply small resistance for moisture and air to diffuse rap idly through the membranes. [29] As indicated in Figure 5, the WVTR had a slightly decline from 11.2 to 9.7 kg m −2 d −1 because of the decreased porosity with increasing PVB con tents from 10 to 50 wt%.…”

Section: Breathable Performancementioning

confidence: 99%

Polyvinyl Butyral Modified Polyvinylidene Fluoride Breathable–Waterproof Nanofibrous Membranes with Enhanced Mechanical Performance

Zhang

Sheng

Yin

et al. 2016

Macro Materials & Eng

View full text Add to dashboard Cite

beings. Breathable and waterproof membranes are the core functional layer of the breathable barrier fabrics. [1,2] Generally, the commercial breathable and waterproof membranes are classified roughly into two types: hydro philic thermoplastic polyurethane (TPU) nonporous mem branes and microporous membranes. Hydrophilic TPU membranes can provide good waterproofness due to their nonporous structure, but its poor moisture transmittance (4 kg m −2 d −1 ) made the wearer uncomfortable. [3] Micro porous membranes use a size exclusion theory to prevent large water droplet from penetrating and permit moisture to transport through porous structure at the same time.As one representative of typical microporous membranes, polytetrafluoroethylene superhydrophobic membranes exhibited good water resistance and modest moisture penetrability (6.3 kg m −2 d −1 ) owing to their clearly visible system of holes and interconnected passageways. [4] These two kinds of breathable-waterproof membranes were Electrospun nanofibrous membranes with outstanding mechanical property, breathability, and waterproofness are critical in protective fields; however, great challenges still remain in creating such functional materials. A novel polyvinylidene fluoride (PVdF)/polyvinyl butyral (PVB) breathable-waterproof membrane with robust mechanical performance is fabricated by introducing thermal posttreatment into electrospun membranes. Embedding of PVB enriches the pristine PVdF nanofibrous membranes with bonded network, optimized pore size, and porosity. The composite membranes are endowed with robust tensile stress of 10.5 MPa and good breaking elongation of 64.5%, which are about four times that of the pure nonbonded PVdF membranes. Apart from this, the bonded PVdF/PVB membranes express integrated properties of high water vapor transmittance rate (10.6 kg m −2 d −1 ), modest air permeability (9.8 mm s −1 ), and good waterproofness (58 kPa). Furthermore, the conveni ence and efficient of this fabrication process will allow for largescale production of PVdF/PVB breathable-waterproof nanofibrous membranes with robust mechanical perfor mance and board applications.

show abstract

“…Functional photocatalytic nanofiber webs are promising environmentally friendly candidates for the photodegradation of organic pollutants, such as dyes and pigments. Nanofibers have high specific morphology, small diameter and small pore size, and customizable physicochemical characteristics, which make them excellent candidates in wastewater treatment, biomedical applications, protein purification, and air filtration…”

Section: Introductionmentioning

confidence: 99%

“…Electrospinning is a popular and simple method to produce functional nanofiber webs among all existing nanofiber webs technologies, such as melt spinning, solution spinning, and emulsion spinning, because of its high efficiency and uniformity in fiber diameter . In addition, by dispersing nanoparticles into electrospinning solution, the nanoparticles can be embedded into nanofibers more uniformly compared to smearing nanoparticles on the nanowebs' surface through post‐treatment methods.…”

Section: Introductionmentioning

confidence: 99%

Visible Light Photocatalytic Functional TiO₂/PVDF Nanofibers for Dye Pollutant Degradation

Lou

Wang

Lee

et al. 2019

Part & Part Syst Charact

View full text Add to dashboard Cite

contaminated water becomes an environmental hazard.Functional photocatalytic nanofiber webs [6,7] are promising environmentally friendly candidates for the photodegradation of organic pollutants, such as dyes and pigments. Nanofibers have high specific morphology, [8] small diameter [9] and small pore size, [10] and customizable physicochemical characteristics, [11] which make them excellent candidates in wastewater treatment, [12] biomedical applications, [13][14][15] protein purification, [16] and air filtration. [17] Poly(vinylidene fluoride) (PVDF) [18] is a commonly used hydrophobic polymer for wastewater treatment, due to its excellent thermal stability, mechanical stability, chemical resistance, and selective permeability. However, interception effect (meaning large particles would be intercepted by small pore size nanofiber webs), the major ultrafiltration mechanism for unfunctionalized PVDF nanofiber webs, [19] limits their applications because of their low filtration efficiency and poor functionality. The addition of nanoparticles could improve the photocatalytic properties, [20] mechanical properties, [21] hydrophobicity, [22,23] and other functional performances of nanofiber webs. [19][20][21][22][23] Moreover, physical modification methods (addition of functional nanoparticles) have proved to be simpler and more effective than chemical modification methods. [24] Commonly used nanoparticles include titanium dioxide (anatase TiO 2 ), [25] zinc oxide (ZnO), [26] aluminum oxide (Al 2 O 3 ), [27] magnetite (Fe 3 O 4 ), [28] graphite oxide (GO), [29] multiwalled carbon nanotubes (MWCNTs), [30] and polymeric nanoparticles. [31] Polymeric nanoparticles, including nanospheres and nanocapsules, are formed by a polymeric matrix and mainly used for drug delivery, where the molecules are absorbed in or on the matrix, for example, encapsulation of insulin in poly(lactic-co-glycolic acid) nanoparticles. [32] Among these nanoparticles, anatase titanium dioxide is the most widely used catalyst for water treatment because of low cost, stability in water, and high photocatalytic property. [19][20][21] The addition of TiO 2 in nanofiber webs can greatly improve the degradation rate of organic pigments/dyes pollutants, [19] antibacterial properties, [20] and other performances (antifouling property, wettability). [20,21,23] Electrospinning is a popular and simple method to produce functional nanofiber webs among all existing nanofiber webs technologies, such as melt spinning, solution spinning, andThe photodegradation of poly(vinylidene fluoride) (PVDF)/titanium oxide (TiO 2 ) nanofibers under visible light is described, something that has not been previously reported in the literature. Visible light photocatalytic electrospun PVDF/TiO 2 nanofiber webs with anatase TiO 2 concentration varying from 0% to 20% (0%, 1%, 3%, 5%, 10%, and 20%) are produced, and their ability to degrade a toxic pollutant, Rhodamine B (RhB), is studied. Photodegradation study using UV-vis spectroscopy on PVDF/TiO 2 nanofiber webs (with TiO 2 con...

show abstract

Breathability of Standalone Poly(vinyl alcohol) Nanofiber Webs

Cited by 18 publications

References 39 publications

Tensile testing and fracture mechanism analysis of polyvinyl alcohol nanofibrous webs

Tensile testing and fracture mechanism analysis of polyvinyl alcohol nanofibrous webs

Polyvinyl Butyral Modified Polyvinylidene Fluoride Breathable–Waterproof Nanofibrous Membranes with Enhanced Mechanical Performance

Visible Light Photocatalytic Functional TiO₂/PVDF Nanofibers for Dye Pollutant Degradation

Contact Info

Product

Resources

About

Breathability of Standalone Poly(vinyl alcohol) Nanofiber Webs

Cited by 18 publications

References 39 publications

Tensile testing and fracture mechanism analysis of polyvinyl alcohol nanofibrous webs

Tensile testing and fracture mechanism analysis of polyvinyl alcohol nanofibrous webs

Polyvinyl Butyral Modified Polyvinylidene Fluoride Breathable–Waterproof Nanofibrous Membranes with Enhanced Mechanical Performance

Visible Light Photocatalytic Functional TiO2/PVDF Nanofibers for Dye Pollutant Degradation

Contact Info

Product

Resources

About

Visible Light Photocatalytic Functional TiO₂/PVDF Nanofibers for Dye Pollutant Degradation