Characterization of polyamide-6/ propolis blended electrospun fibers

Abstract

Polyamide-6 (PA-6) nanofibers and PA-6/propolis ethanolic extract (EEP) blended fibers were prepared having electrospun their solutions in formic acid as solvent. The effect of concentrations of PA-6 and also EEP in polymer solutions on the morphology and physicochemical characteristics of their electrospun fibers was investigated. The analysis of FESEM images showed the mean diameter of fibers increased from 487-682 nm with increasing PA-6 concentration in the range of 25-40 % w/v. While, increasing EEP concentration (20-50% (w/w)) in PA-6/EEP system caused the increasing fiber mean diameters from 943-1773 nm. Partially high aspect ratio nanofibers were observed only in the PA-6 systems. Antioxidant activity of the fibers enhanced with increasing EEP concentration in the fiber mats. FTIR spectrums and thermal properties of electrospun fibers exhibited the simple mixtures of PA-6 and EEP in blend fibers which did not contain very complex interactions.

Electrospun Poly (Vinyl Alcohol) Nanofibrous Mat Loaded with Green Propolis Extract, Chitosan and Nystatin as an Innovative Wound Dressing Material

“…However, studies involving associations between natural and synthetic actives in nanofibres still demand more experimental studies. The propolis concentration in the formed nanofibre mats reached 30% (w/v) in both the PVA/W7% and PVA/W8% solutions, a concentration also used by Razavizadeh and Niazmand [50]. The lower volatility of the F1 and F2 electrospinning formulations loaded with GPE can be pointed out as interfering with the morphology of the nanofibre mats.…”

“…There are reports of a significant increase in the diameter of electrospun fibres loaded with propolis and other natural compounds, including the microfibre formation, depending on the concentration of actives in the formulation [49,50]. However, studies involving associations between natural and synthetic actives in nanofibres still demand more experimental studies.…”

Reuse of Textile Waste to Production of the Fibrous Antibacterial Membrane with Filtration Potential

“…HFIP is an expensive solvent that is considered toxic; however, these disadvantages can be partially reduced by mixing with another miscible material, such as chloroform or dichloromethane with a low concentration of HFIP, as it was already used in the chromatographic characterization of PET, poly(butylene terephthalate) (PBT), or polyamides (PAs) [ 64 , 65 ]. Although this solvent was electrospinnable, the resulting polyamide-6 fibers were observed to be thicker but uniform [ 66 , 67 , 68 , 69 ].…”

Electrospun fibers as carriers for topical drug delivery and release in skin bandages and patches for atopic dermatitis treatment

“…Electrospun fibers are used in piezoelectric nanogenerators (Szewczyk et al, 2020), smart textiles (Busolo et al, 2019), systems for water harvesting (Knapczyk‐Korczak et al, 2021; Knapczyk‐Korczak, Szewczyk, et al, 2020) and purification from oil (Brown & Bhushan, 2016; Jiang et al, 2022; F. Li, Bhushan, et al, 2019), or systems for separation of antibiotics (K. Zhao et al, 2021). Due to the possibility of using various non‐toxic, biodegradable polymers for electrospinning, this method makes it possible to use polymer fibers for food packaging (H. Huang et al, 2022; Razavizadeh & Niazmand, 2020; C. Zhang et al, 2019) and tissue engineering purposes (Angel et al, 2022; Sell et al, 2010; X. Wang et al, 2013). In particular, fibrous membranes are commonly used for wound healing (D. W. C. Chen et al, 2012; H. Li, Zhang, et al, 2019; J. Wang & Windbergs, 2017; J. Yang, Wang, et al, 2020), as they are highly permeable and their structural properties aid in the skin regeneration processes (Kataria et al, 2014; Naseri et al, 2014; Shi et al, 2013; R. Xu et al, 2016).…”

“…Propolis, a natural substance produced by bees, boasts some anti‐inflammatory and antimicrobial properties which can be applied to the biomedical field (Adomavičiūtė et al, 2018). Propolis was blended with polyurethane (PU) and electrospun, producing smooth nanofibers with increased antibacterial activity (J. I. Kim et al, 2014; Razavizadeh & Niazmand, 2020). Anti‐inflammatory poly(propylene sulfide) (PPS) nanoparticles were added to poly(ethylene oxide) (PEO) and electrospun to produce patches for skin diseases such as AD and psoriasis.…”