Effect of Design and Method of Creating Wicking Channels on Moisture Management and Air Permeability of Cotton Fabrics

Nazir, Ahsan; Hussain, Tanveer; Abbas, Ghulam; Afif, Ahmed

doi:10.1080/15440478.2014.919892

Cited by 30 publications

(24 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Wang et al reported that hydrophobic-to-hydrophilic gradient across the thickness of a fabric can guide directional water-transport from the hydrophobic side to the hydrophilic side, but no water transport takes place in the opposite direction unless an extra force is applied [18,19]. Such unidirectional water penetration phenomenon was also reported by our group [20] and referred to as "water diode" [21,22] or "directional wicking" [1,23].…”

Section: Introductionsupporting

confidence: 55%

Novel Janus Fibrous Membranes with Enhanced Directional Water Vapor Transmission

Tang

Zhang

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

Novel hydrophobic/hydrophilic Janus fibrous membranes, the poly[4,4 -methylenebis (phenylisocyanate)-alt-1,4-butanediol/di(propylene glycol)/plycaprolactone] (PU) fibrous membrane as the hydrophobic layer and cellulose acetate (CA) fibrous membrane as the hydrophilic layer, were fabricated by the so-called "layer-by-layer" electrospinning technology. A series of the PU/CA Janus membranes with different electrospinning time of the CA layers by which the thickness of hydrophilic layer can be controlled were also prepared to uncover its influence on the directional water vapor transmission. The results showed that water vapor transmission capability from the hydrophobic side to the hydrophilic side of the PU/CA Janus fibrous membrane was enhanced rather than that from the reverse direction of the same membrane. The optimal water vapor transmission capacity existed when the electrospinning time of CA fibrous membrane reached 15 min. Such enhanced water vapor transmission originated because of the asymmetric wettability of the Janus membrane and the strong force to draw tiny water droplet from the hydrophobic side to the hydrophilic side. The novel understanding is useful for facile designing and fabrication of efficient moisture permeable fabrics and clothing.

show abstract

Section: Introductionsupporting

confidence: 55%

Novel Janus Fibrous Membranes with Enhanced Directional Water Vapor Transmission

Tang

Zhang

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…[23][24][25][26][27][28][29][30] Our previous works have reported the preparation of hydrophobic-to-hydrophilic gradient fabrics that can guide directional water-transport from the hydrophobic to the hydrophilic side. In research literatures, the directional water transport was also termed "one-way water transport," "directional wicking," [33][34][35] or "water diode." In research literatures, the directional water transport was also termed "one-way water transport," "directional wicking," [33][34][35] or "water diode."…”

mentioning

confidence: 99%

Novel Water Harvesting Fibrous Membranes with Directional Water Transport Capability

Zhou

Wang

et al. 2019

Adv Materials Inter

View full text Add to dashboard Cite

properties assisted in moisture absorption. The Namib Desert beetles and Texas horned lizard collect dew using their bumpy body surface with alternating regions of hydrophilic and hydrophobic, and the honeycomb structures on the scale increase condensation foci. [3][4][5][6] These excellent water harvesting creatures elucidate the critical role of wettability irregularity and hierarchical structure gradient in guiding water transport. [7] Inspired by nature, researchers have developed artificial water harvesters, [7][8][9][10][11][12][13][14][15][16][17][18] such as water collecting filaments and hydrophobichydrophilic patterned fog collectors. [19][20][21][22] However, most of the water harvesters developed so far are based on either a 2D surface or a 1D filament.Recently, researchers have uncovered that porous membranes with wettability gradient or wettability contrast in thickness direction can have a "smart" directional wicking effect, which enables water to transfer automatically across the membrane just in one direction. [23][24][25][26][27][28][29][30] Our previous works have reported the preparation of hydrophobic-to-hydrophilic gradient fabrics that can guide directional water-transport from the hydrophobic to the hydrophilic side. [31,32] Such a unidirectional water penetration phenomenon was also reported by other researchers. In research literatures, the directional water transport was also termed "one-way water transport," "directional wicking," [33][34][35] or "water diode." [36][37][38][39][40] Almost all the directional water transport membranes have a hydrophobic layer on one side and a hydrophilic layer on the other, a typical feature of Janus membranes. However, not all Janus membranes have a directional wicking property because Janus membranes might have bidirectional or nonwicking properties, depending on the hydrophobic/hydrophilic combination layout. [36,38,39] Despite the reports about the preparation and applications of directional wicking porous media, limited attention has been devoted to using them for water harvesting.Herein, we report a novel finding about harvesting water from air using hydrophobic/superhydrophilic directional wicking nanofibrous membranes. A two-step electrospinning method was employed to prepare directional wicking fibrous membranes using polyacrylonitrile (PAN) as a starting material. The directional wicking membranes were found to have much larger water harvesting capacity than those with homogeneous wettability and the same fibrous structure. The porous structure and pore dimension also contributed to water harvesting.Previous studies about water harvesting from airborne moisture, which is driven by a directional water transport principle, are based on either a 2D surface or a 1D filament. Porous membranes with a directional water transport capability are seldom used for water harvesting. Herein, a novel hydrophobic/ hydrophilic directional-wicking nanofibrous membrane is reported showing enhanced water harvesting ability. In comparison to the hydrophobic or hy...

show abstract

“…One of the most important function of a wound dressing is its ability to absorb fluid from a highly exuding wound maintaining a moist environment in a dry wound [60]. It is clear that high chitosan concentrations significantly reduce the absorptive capacity of cotton gauze.…”

Section: Water Uptakementioning

confidence: 99%

Comfort and Infection Control of Chitosan-impregnated Cotton Gauze as Wound Dressing

et al. 2019

View full text Add to dashboard Cite

The aim of this study was to evaluate the thermo-physiological comfort properties of surgical cotton gauze coated with chitosan (CH) and its effectiveness for the prevention of bacterial colonization. Gauze was coated with CH at mass fractions of 0.50, 0.25, 0.125, 0.10, 0.063 wt% and the friction, flexibility, thermal, moisture management and mechanical properties were evaluated. The best performing gauze in terms of comfort (0.125 wt%) was further evaluated for its ability to inhibit the growth of microorganisms such as bacteria and yeast. Results indicate that the functionalized medical gauze could induce low friction on the wound bed allowing a good degree of moisture and high absorption capacity of wound exudates. Moreover, it shows antimicrobial properties against medical-relevant pathogens. This biofunctional medical gauze demonstrates to deliver an efficient antimicrobial coating and promote the best conditions for maintenance of the wound microenvironment.

show abstract

Effect of Design and Method of Creating Wicking Channels on Moisture Management and Air Permeability of Cotton Fabrics

Cited by 30 publications

References 9 publications

Novel Janus Fibrous Membranes with Enhanced Directional Water Vapor Transmission

Novel Janus Fibrous Membranes with Enhanced Directional Water Vapor Transmission

Novel Water Harvesting Fibrous Membranes with Directional Water Transport Capability

Comfort and Infection Control of Chitosan-impregnated Cotton Gauze as Wound Dressing

Contact Info

Product

Resources

About