Preparation and characterization of UV-cured hybrid polyvinyl alcohol nanofiber membranes by electrospinning

Zeytuncu, Bihter; Akman, Süleyman; Yücel, Onuralp; Kahraman, Memet Vezi̇r

doi:10.1590/s1516-14392014005000055

Cited by 21 publications

(7 citation statements)

References 22 publications

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“…The UV exposure with higher power produces thicker fibers. This result shows that an increased power of UV exposure leads to the polymerization of PVA-AV as well as physical cross-linkers incorporation of the PVA-AV and increasing the production of thicker nanofibers [12][13][14].…”

Section: Resultsmentioning

confidence: 75%

The Effect of Ultraviolet Exposure on Physical Properties of Electrospun Nanofiber Membrane Based on Polyvinyl Alcohol and <i>Aloe vera</i>

Hikmawati

Maharani

Putra

et al. 2020

KEM

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Ultraviolet (UV) irradiation in biomaterial synthesis is commonly used to do sterilization and increase physical characteristics. This study had a goal to evaluate the characteristics of polyvinyl alcohol-Aloe vera (PVA-AV) nanoﬁbers from the electrospinning process that was exposed by UV with the power of 8, 10, 15, and 20 W for 6 h. The physical properties of the fiber were characterized by using Scanning Electron Microscope (SEM), Fourier Transform Infrared (FTIR), Differential Scanning Calorimetry (DSC) test, and water absorption test. The SEM images showed that the nanofibers were formed with s homogeneous structure and no beads. The diameter and the thickness of the nanofibers increased with the increase of the power of UV exposure to the sample. The biggest diameter was 319.60 ± 56.17 nm at UV exposure power of 20 W. The FTIR test result indicated that there was no new chemical bond after the PVA-AV was exposed by UV. DSC test result showed that the increase of power could increase the melting temperature (Tm) with the highest value of 189.51°C at UV exposure power of 20 W. The water absorption test showed that the highest water absorption was 739.6 % at UV exposure power of 20 W.

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Section: Resultsmentioning

confidence: 75%

The Effect of Ultraviolet Exposure on Physical Properties of Electrospun Nanofiber Membrane Based on Polyvinyl Alcohol and <i>Aloe vera</i>

Hikmawati

Maharani

Putra

et al. 2020

KEM

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“…The thermal properties of the resulting PVA/silica nanofibers were better than those obtained in most other similar studies. 19,[23][24][25] The high thermal stability of the silica precursor in this work could be attributed to the existence of C-F bonds and rigid aromatic units. This result also shows that the organic and inorganic matrices were fully crosslinked at the molecular level as supported previously by the FTIR results.…”

Section: Resultsmentioning

confidence: 83%

Highly thermally resistant hydrophobic poly(vinyl alcohol)-silica hybrid nanofibers

Uğur

Oktay

Güngör

et al. 2018

JSCS

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In this paper, the preparation of hydrophobic and crosslinked poly- (vinyl alcohol)/silica organic?inorganic hybrid nanofibers via the sol?gel electrospinning method is reported. Silica was produced through the acetic acid catalyzed reaction of a silica precursor consisting of dimethyldimethoxysilane (DMDMOS), methyltrimethoxysilane (MTMS), tridecafluoro-1,1,2,2-tetrahydrooctyltriethoxysilane (FAS1313; Dynasylan? F 8261) and phenyltrimethoxysilane (PTMS; Dynasylan? 9165) in a 2-propanol?water mixture. Hybrid nanofibers were obtained by electrospinning the silica precursor and an aqueous PVA solution. Chemical, structural, thermal and surface analyses were conducted by Fourier-transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy/energy-dispersive X-ray (SEM/EDX) and water contact angle (WCA) methods, respectively. The obtained hybrid nanofibers were insoluble in aqueous solution. SEM images displayed that highly crosslinked and porous structures were obtained and the average fiber diameters of poly(vinyl alcohol) (PVA)/silica nanocomposites were around 70 nm. A nanofiber surface with a water contact angle of 130? was achieved.

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“…From 1128-1045 cm -1 is the region of C-H deformation in-plane and 754 cm -1 is assigned to C-H deformation out-of-plane of pristine PLGA (Motta and Duek, 2006;Porjazoska et al, 2004). In the microparticles, the PAC signals can be observed at 3295 cm -1 , 1604 cm -1 and 842 cm -1 , as well as the absence of the C=O band of PVA at 1721 cm -1 (Alhosseini et al, 2012;Reis et al, 2006;Zeytuncu et al, 2014).…”

Section: Resultsmentioning

confidence: 97%

SYNTHESIS, CHARACTERIZATION AND in vitro CYTOTOXICITY OF Acacia mearnsii PROANTHOCYANIDIN LOADED PLGA MICROPARTICLES

Grasel

Behrens

Strassburger

et al. 2019

Braz. J. Chem. Eng.

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One of the highlighted areas in the development of new materials is the generation of micro-and nanoparticles as drug carriers which allow the progress in formulations with the ability to release active agents in a controlled way. The proanthocyanidins (PAC) extracted from the bark of the Black Wattle have stood out for their biological activities. However, most polyflavonoids have some features which limit their application in the pharmaceutical field, such as light fastness, low bioavailability of active agents, and unpleasant taste. In this context, this study aims to present the synthesis and characterization of PAC-loaded lactic-co-glycolic acid (PLGA) microparticles obtained by the multiple emulsion method. The incorporation of PAC into PLGA was successfully achieved with PAC encapsulation efficiency around 73%. Spherical microparticles were obtained with a size distribution in the range of 0.6 to 2.4 μm. The presence of PAC modified the thermal properties of the PLGA matrix. The results of in vitro assays with Vero and T24 lineage celss showed that PLGA/PAC microparticles did not promote any effect on cell proliferation by MTT assay after 24 h. The novel Acacia mearnsii proanthocyanidin-loaded PLGA microparticles have potential for application in biological systems.

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Preparation and characterization of UV-cured hybrid polyvinyl alcohol nanofiber membranes by electrospinning

Cited by 21 publications

References 22 publications

The Effect of Ultraviolet Exposure on Physical Properties of Electrospun Nanofiber Membrane Based on Polyvinyl Alcohol and <i>Aloe vera</i>

The Effect of Ultraviolet Exposure on Physical Properties of Electrospun Nanofiber Membrane Based on Polyvinyl Alcohol and <i>Aloe vera</i>

Highly thermally resistant hydrophobic poly(vinyl alcohol)-silica hybrid nanofibers

SYNTHESIS, CHARACTERIZATION AND in vitro CYTOTOXICITY OF Acacia mearnsii PROANTHOCYANIDIN LOADED PLGA MICROPARTICLES

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