Investigating the wicking behavior of micro/nanofibrous core‐sheath PET–PAN yarn modified by dimethyl 5‐sodium sulfoisophthalate

Abstract

The present research aims at imparting an improved wicking ability to the recycled multifilament yarns by wrapping composite nanofibers to attain an efficient material for filtration purposes. Therefore, polyacrylonitrile nanofibers containing dimethyl 5-sodium sulfoisophthalate nanoparticles were wrapped around the recycled poly(ethylene terephthalate) yarn by means of a novel electrospinning technique. Several tests were performed to investigate the parameters affecting wicking rise and moisture regain of the samples. Taguchi method was used in two separate designs (with or without nanoparticles). Some factors such as polymer solution concentration, mass ratio of nanoparticles, take-up rate, and number of filaments were considered as the variable factors while yarn wicking rate and moisture regain were the response factors. It was found that the hydrophilic nature of nanoparticles together with the ultrafine structure of nanofibers provide yarns with enhanced wicking properties. Although solution concentration is the predominant factor in wicking rate of the yarns containing nanoparticles, the most effective factor in wicking rise and moisture regain for other cases is the number of filaments. The mechanism of nanoparticle effect on fluidic jet during electrospinning process is explained by theory of nanofluids stability which has never been validated experimentally in previous research studies.

Structural design and vertical wicking behavior of cotton roving-based materials for nutrient transport of indoor plant

“…Wicking, the absorption capacity and passive spreading of liquid into the narrow micro/nano-spaces without the action of external forces, plays a crucial role in the processing procedures and the potential applications in many fields including but not limited to bioinspired textiles, 1–3 thermal management, 4,5 moisture harvesting, 6 oil recovery, 7 particle filtration, 8 biomedical, 9–11 tissue engineering scaffolds, 12 microfluidic devices, 13 geotextiles, 14,15 etc. In these materials, the wicking behavior alters if there is any change in the fluid characteristics, the surface treatments, and structural geometry.…”

Investigation of wicking phenomenon and tensile properties in three‐layer composite nanofibrous PA/PLLA yarn

“…Here, the height of wicking was about 12.17 mm in S4 sample, which was more than reported by Abbaszadeh et al (3 mm) and Ravandi et al (10 mm). [ 13,14 ] As well it was less than the maximum height of wicking in the work of Liu et al and Jin et al, which was reported 76 and 20 mm, respectively. [ 17, 18 ]…”

“…Polymer concentration, the mass ratio of nanoparticles, take‐up speed, and the number of filaments are the main factors that affect the wicking rate. [ 13 ] Hosseini Ravandi et al studied the wicking ability of the polyacrylonitrile/titanium oxide (PAN/TiO 2 ) nanofiber yarn using colored liquid. The yarn with a lower twist had a higher rate of capillary rise.…”

Recycling and Reutilizing Polymer Waste via Electrospun Micro/Nanofibers: A Review

“…Latifi et al obtained a nanofiber web with recycled PET and nano iron oxide via electrospinning, which possesses microwave absorption characterization and wettability [ 107 ]. Alirezazadeh and colleagues electrospun a micro/nanofibrous core-sheath yarn with recycled PET wrapped by PAN containing dimethyl 5-sodium sulfoisophthalate nanoparticles and examined its wicking behavior for filtration [ 108 ]. Vanegas et al revealed that electrospinning the recycled PET and zinc oxide nanoparticles together could obtain fibers with antibacterial and antifungal properties [ 94 ].…”