Cross-linked poly(vinyl alcohol) nanofibers as drug carrier of clindamycin

Nadem, Sara; Ziyadi, Hakimeh; Hekmati, Malak; Baghali, Mitra

doi:10.1007/s00289-019-03027-z

Cited by 14 publications

(17 citation statements)

References 30 publications

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“…In addition, the determination of π-π* adsorption band in C=C aromatic cyclic was conducted via UV-Vis Spectrophotometry ( Figure 3 ). As can be seen, the transition occurred at about 225 nm, which is in agreement with [ 36 ], who reported a range between 230 and 270 nm and Woodward-Fieser rules who suggested a value equal to 245 nm [ 37 ]. Peaks to indicate Ag 0 in the interval of 400–420 nm were not observed, as the amount of AgNO 3 samples was small.…”

Section: Resultssupporting

confidence: 89%

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Carbon-Nano Fibers Yield Improvement with Iodinated Electrospun PVA/Silver Nanoparticle as Precursor via One-Step Synthesis at Low Temperature

et al. 2022

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High temperature is required in carbon fiber synthesis in the carbonization step. However, direct high-temperature heating without the presence of additive materials would affect the yield and structure of carbon fibers produced. Thus, this study aims to synthesize carbon fibers from poly-vinyl alcohol (PVA), as the precursor and reducing agent, using silver nanoparticles (SNP) from silver nitrate (AgNO3) as additives. The pre-treatment of PVA was performed in three steps, i.e., mixing PVA/AgNO3, electrospinning, and iodination. The interaction of PVA and AgNO3 was assessed by FTIR, and SEM was used to characterize the electro-spun fibers prior and after iodination; Raman spectrophotometer was carried out to confirm the yield of carbon fibers. There was reduction in oxygen groups (3000–3800 cm−1) and emergence of -C=O (1100 cm−1) and -C=C- (1627 cm−1) functional groups, indicating formation of carbon layers. Based on the DT/GA results, the silver nanoparticles reduce the need of high temperature with optimum carbonization at 350°C and lead to the formation of more regular graphene layers. Graphene layers with a size distribution of 0.438 nm and well-organized structures were successfully formed, and the Raman shifting showed higher intensities of G and G’ bands in the presence of Ag. Based on DT/GA results, the yield of carbon fibers with iodinated PVA fibers and SNP as additive had higher rates around 800 µg/min, reaching 33% at 500°C. Thus, it is demonstrated that iodinated PVA/AgNO3 samples can significantly improve carbon fiber yield at low temperatures.

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Section: Resultssupporting

confidence: 89%

“…This was in accordance with the results reported by Sheha et al (2012) who utilized copper and PVA as the source for electrolyte polymer which later was iodinated [ 35 ]. As long as swelling fibers in PVA and PVA/AgNO 3 were coincided, cross-linking reactions could have happened during the iodination process [ 36 ].…”

Section: Resultsmentioning

confidence: 99%

Carbon-Nano Fibers Yield Improvement with Iodinated Electrospun PVA/Silver Nanoparticle as Precursor via One-Step Synthesis at Low Temperature

et al. 2022

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“…3. The pure PVA nanofibers exhibited various transmittance peaks at 813, 1226, 1353, 1535, 1724, 2875 and 3614 cm −1 which were attributed to the (C-C), (C-O), (CH), (CH-OAC) and (C=O) residual from primary vinyl acetate, (CH2) and free (OH) resonance, respectively, which is completely agree well with previous studies [46,47]. In kefiran nanofiber spectra, peak at 1645 cm −1 are related to bound water [48].…”

Section: Characterizationsupporting

confidence: 92%

Kefiran/poly(vinyl alcohol)/poly(vinyl pyrrolidone) composite nanofibers: fabrication, characterization and consideration of effective parameters in electrospinning

et al. 2020

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The kefiran/polyvinyl alcohol and polyvinyl pyrrolidone nanofibers were effectively fabricated for the first time using electrospinning of poly(vinyl alcohol), poly(vinyl pyrrolidone) and kefiran blend solution. The effect of solution parameters, such as kefiran concentration and poly(vinyl alcohol)/poly(vinyl pyrrolidone) mixing ratio, were considered. The parameters' effects, such as voltage, nozzle-to-collector distance and feeding rate on nanofibers morphology, were also checked by the scanning electron microscopy images. After changing the parameters on different steps, designed by the chemo metrics software, the finest nanofibers were produced in the following conditions: 2% kefiran concentration, 30/70 kefiran/polymer mixing ratio, 12 kV voltage, 200 mm needle-to-collector distance and 0.5 (mL/h) polymer injection rate. The nanofibers produced in these conditions were uniform without knots or adhesion in the lowest diameter of 156 nm. Kefiran concentration and kefiran/polymer mixing ratio were found as the most effective parameter in the morphology and diameter size of the nanofibers. The attenuated total reflectance (ATR-Ft-IR), atomic force spectroscopy, differential scanning calorimeters and thermal gravimetric analysis were used to investigate molecular structures, threedimensional morphology and heating properties of the nanofibers, respectively.

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“…Electrospinning technique with high versatility and flexibility provides unique advantages to formulate uniform and continuous nanofibers with controllable pore structure from many natural polymers and synthetic polymers [ 44 , 45 , 46 ]. The electrospun nanofibers with a large surface-to-volume ratio and high porosity have been used in various fields, especially biomedical applications such as tissue engineering, drug delivery, and wound dressing [ 44 , 47 , 48 ]. Nanofibers have been useful in tissue regeneration because they imitate the natural extracellular matrix (ECM) and promote the migration and proliferation of cells [ 49 ].…”

Section: Electrospinning Technique and Properties Of Nanofibersmentioning

confidence: 99%

Fabrication of Hybrid Nanofibers from Biopolymers and Poly (Vinyl Alcohol)/Poly (ε-Caprolactone) for Wound Dressing Applications

Alven

Aderibigbe

2021

Polymers

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The management of chronic wounds is challenging. The factors that impede wound healing include malnutrition, diseases (such as diabetes, cancer), and bacterial infection. Most of the presently utilized wound dressing materials suffer from severe limitations, including poor antibacterial and mechanical properties. Wound dressings formulated from the combination of biopolymers and synthetic polymers (i.e., poly (vinyl alcohol) or poly (ε-caprolactone) display interesting properties, including good biocompatibility, improved biodegradation, good mechanical properties and antimicrobial effects, promote tissue regeneration, etc. Formulation of these wound dressings via electrospinning technique is cost-effective, useful for uniform and continuous nanofibers with controllable pore structure, high porosity, excellent swelling capacity, good gaseous exchange, excellent cellular adhesion, and show a good capability to provide moisture and warmth environment for the accelerated wound healing process. Based on the above-mentioned outstanding properties of nanofibers and the unique properties of hybrid wound dressings prepared from poly (vinyl alcohol) and poly (ε-caprolactone), this review reports the in vitro and in vivo outcomes of the reported hybrid nanofibers.

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Cross-linked poly(vinyl alcohol) nanofibers as drug carrier of clindamycin

Cited by 14 publications

References 30 publications

Carbon-Nano Fibers Yield Improvement with Iodinated Electrospun PVA/Silver Nanoparticle as Precursor via One-Step Synthesis at Low Temperature

Carbon-Nano Fibers Yield Improvement with Iodinated Electrospun PVA/Silver Nanoparticle as Precursor via One-Step Synthesis at Low Temperature

Kefiran/poly(vinyl alcohol)/poly(vinyl pyrrolidone) composite nanofibers: fabrication, characterization and consideration of effective parameters in electrospinning

Fabrication of Hybrid Nanofibers from Biopolymers and Poly (Vinyl Alcohol)/Poly (ε-Caprolactone) for Wound Dressing Applications

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