The optical and mechanical properties of PVA-Ag nanocomposite films

Physico–chemical and mechanical properties and antibacterial activity of silver/poly(vinyl alcohol)/graphene nanocomposites obtained by electrochemical method

“…formation of AgNPs [16,30,34], while the second absorption band peaking at nearly 650 nm indicated aggregation or agglomeration of the AgNPs [34,35]. Because the concentration of AgNPs is proportional to the absorbance intensity [16,35], we concluded that that presence of graphene slightly decreased the amount of AgNPs in the Ag/PVA/Gr colloid dispersion.…”

“…Because the concentration of AgNPs is proportional to the absorbance intensity [16,35], we concluded that that presence of graphene slightly decreased the amount of AgNPs in the Ag/PVA/Gr colloid dispersion. has been reported to correspond to smaller nanoparticles [36], our results therefore suggested that AgNPs in the Ag/PVA/Gr colloid dispersions had smaller dimensions than those in the Ag/PVA colloid dispersions, suggesting that graphene sheets situated between the polymer chains prevented the further growth and aggregation or agglomeration of AgNPs.…”

“…PVA hydrogels have attracted great interest in the fields of tissue engineering and regenerative medicine as matrices for repairing and regenerating a wide variety of tissues and organs [12]. There is growing interest in incorporating nanomaterials into polymer matrices to create antibacterial and biocompatible polymer nanocomposites for a wide range of applications, such as thin films for biosensors and biomedical devices, fibers for wound dressing, and dispersions with antimicrobial properties [15,16]. The addition of graphene, even at a very low concentration (usually less than 5%), into a polymer matrix can significantly improve the mechanical, thermal, electrical, and gas barrier properties of the polymer [17][18][19][20][21][22].…”

Facile and green fabrication of electrospun poly(vinyl alcohol) nanofibrous mats doped with narrowly dispersed silver nanoparticles

“…In addition to its simplicity and green chemistry, the contents of AgNPs on nanofabric mats can be easily tuned by the exposure of post-ultraviolet (UV) irradiation or the preheating treatment ( Figure 1). Moreover, since PVA has been reported as an effective stabilizer of AgNPs, by preventing them from aggregation, 27 this approach opens an alternative possibility of creating dispersed and aligned nanostructures of AgNPs in PVA nanofiber matrix for wide applications such as biological sensors, [28][29][30] conductive interconnects, 31,32 optoelectronic devices, [33][34][35] and effective bioactive materials, as we demonstrate to follow.…”

“…14 Recently, a series of monodispersed AgNPs with 25,35,45, 60 and 70 nm sizes was reported by using poly(vinyl pyrrolidone) (PVP) as the surfactant. 15 Also AgNPs can be incorporated within biodegradable poly(lactic acid) 16 or deposited onto modified titanium surfaces 17 as an antibacterial scaffold for tissue engineering and medical applications.…”