Conductive and antibacterial cellulose nanofibers decorated with copper nanoparticles for potential application in wearable devices

Abstract

One of the contributions of nanotechnology to our daily life is the preparation of a large variety of polymer-based nanofibers, which could be the basis of future wearable devices. Wearable electronics are a great part of smart textiles research. Herein, we have reported an easy method to fabricate electrically conductive cellulose nanofibers (CNFs). To fabricate CNFs, we first prepared cellulose acetate (CA) nanofibers by using the electrospinning technique and later, the deacetylation process was done to obtain the CNFs. The electroless deposition (ELD) technique was then used to create the conductive nanofibers. Copper (Cu) was used to coat the CNFs because of their high conductivity and low cost. The ELD process parameters including time, temperature, volume, and pH were optimized to obtain a nanofiber with higher conductivity. The optimized condition was temperature: 40 C, time: 10 min, volume: 600 ml, and pH: 13 to obtain a nanofiber web with 983.5 S/cm conductivity. Cu-coated CNFs were characterized by scanning electron microscope, energy-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, water contact angle, antibacterial activity, tensile, and electrical conductivity. The bending cycle test was performed to quantitatively demonstrate the durability and flexibility of the Cu-coated nanofibers. Cu-coated CNFs exhibited great performance to be used as a conductive layer with antibacterial activity. K E Y W O R D Scellulose and other wood products, conducting polymers, electrospinning, membranes, synthesis and processing techniques

Salts and water‐free dyeing of cellulose nanofibers using novel green deep eutectic solvents: Isotherm, kinetics, and thermodynamic studies

“…It means that the dye molecules were embedded less compactly in CN medium 32 . From chemical structure point of view, since the CNF is hydrophilic substance, 33 the interaction between reactive dye and CNF could be a reasonable interoperation.…”

Facile construction of electrospun zein nanofiber loaded with Rana chensinensis skin collagen for wound care after caesarean section surgery

“…Internal medicine performed in reaction to inflammation induced by a wound, for example, has ancillary therapeutic roles in addition to its primary function of reducing inflammation [6][7][8]. Most wound care drugs are used externally, and this category of medicine includes liquid drugs, ointments, and dressings [9][10][11]. In addition to reducing swelling and pain, these medicines can function as a barrier against outside pollutants, safeguard wounds, and hasten their closure [12].…”

Plant extracted natural fluorescent protein C-phycocyanin doped in PVA nanofibers for advanced apparel application

“…Conventional dyeing generates dye pollutants during the dyeing process and requires high temperature and time, whereas dope dyeing is a more effective alternative that prevents dye loss into effluents, provides excellent color fastness, and achieves mass coloration with economical time and energy consumption [17][18][19][20][21]. Nanofibers have diverse applications including biosensor [22], filtration [23], tissue engineering scaffolds [24,25] protective clothing [26], wound dressings [27], drug delivery systems [28], and nanofibrous composites [29]. Researchers have mainly focused on the aesthetic properties of nanofibers for apparel applications [30].…”