Poly(lactic acid)/polyurethane blend electrospun fibers: structural, thermal, mechanical and surface properties

Yılmaz, Sema Samatya; Aytaç, Ayşe

doi:10.1007/s13726-021-00944-7

Cited by 14 publications

(16 citation statements)

References 32 publications

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“…Meanwhile, the characteristic peaks identifying the aromatic carbon rings (C=C stretching vibration of the benzenoid ring) were depicted at 1507.9 cm −1 and 1581.8 cm −1 which implies C=C stretching of quinoid (Q) ring 49 . Moreover, C–N, stretching of a secondary aromatic ring located at peaks of 1299.49 cm −1 47,48 . The resulting FTIR spectra confirmed the successful deposition of PANI layers to form a conductive nanofibrous patch.…”

Section: Resultsmentioning

confidence: 68%

“…49 Moreover, C-N, stretching of a secondary aromatic ring F I G U R E 4 FTIR spectra analysis of the different electrospun patches [Color figure can be viewed at wileyonlinelibrary.com] located at peaks of 1299.49 cm À1 . 47,48 The resulting FTIR spectra confirmed the successful deposition of PANI layers to form a conductive nanofibrous patch.…”

Section: Chemical Compositionmentioning

confidence: 63%

“…In addition, C–O–H stretching shows a wavenumber band at 1088 cm −1 and tensile vibration mode CH 2 was observed at wavenumber 2932 cm −1 . Moreover, increasing the number of hydrogen bonds formed between the soft and hard parts of the two polymers PLA/PU appeared at 3318 cm −1 47,48 . The dual syringe patch show FTIR peaks as following; wavenumber between 3000 cm −1 to 3500 cm −1 for N–H stretching, C–H stretching appeared at 2980.15 cm −1 , 2360.9 cm −1 , 1385.14 cm −1 , 1515 cm −1 20,45,46 …”

Section: Resultsmentioning

confidence: 93%

“…Moreover, increasing the number of hydrogen bonds formed between the soft and hard parts of the two polymers PLA/PU appeared at 3318 cm À1 . 47,48 The dual syringe patch show FTIR peaks as following; wavenumber between 3000 cm À1 to 3500 cm À1 for N-H stretching, C-H stretching appeared at 2980.15 cm À1 , 2360.9 cm À1 , 1385.14 cm À1 , 1515 cm À1 . 20,45,46 Figure 5 shows infrared spectra of PANI peaks found at 3000 to 3500 cm À1 (N-H stretching of secondary amine), and the aromatic C-H out-of-plane bending vibrations shows peaks at 698.6 cm À1 , 864.3 cm À1 .…”

Section: Chemical Compositionmentioning

confidence: 97%

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Development of conductive polymeric nanofiber patches for cardiac tissue engineering application

Mousa

Ali

Rezk

et al. 2022

J of Applied Polymer Sci

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Electrically conductive patches using biocompatible polymeric nanofibers have a beneficial effect on electroresponsive tissues such as the brain, heart, and nervous system. Recently, conductive nanofiber patches with electromechanical properties gained more attention as a promising and a well-effective technology in tissue engineering due to their conductive and flexible nature. In the present study, proposed conductive nanofibrous patches were developed using the electrospinning technique to mimic native myocardial extracellular matrix (ECM) biological and mechanical properties. Different patches of polyurethane (PU) and polylactic acid (PLA) biopolymer were developed by blending and dual syringe electrospinning followed by coating with interfacial polymerization of polyaniline (PANI). The developed nanofibrous patches were evaluated in terms of morphology, physicochemical properties, mechanical flexibility, and in vitro biocompatibility using human EA. hy926 endothelial cells. Results indicated an appropriate surface wettability and mechanical stability of the developed patches compared to reported human myocardium tissue properties. In addition, the electrochemical impedance spectroscopy (EIS) test showed that patches coated with PANI as conductive films can enhance conductivity compared to the nonconductive (i.e pure polymers) and resulted in better cell proliferation and attachment. Interestingly, the electrical stimulation (ES) during in vitro test can be electrically stimulated and promote cell proliferation as well as mimic the myocardium bioelectricity. Our findings showed that the developed conductive patches can provide a robust conductive system for electroresponsive tissue indicated by cell proliferation shown in FESEM images of attached cells.

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Section: Resultsmentioning

confidence: 68%

Section: Chemical Compositionmentioning

confidence: 63%

Section: Resultsmentioning

confidence: 93%

Section: Chemical Compositionmentioning

confidence: 97%

See 2 more Smart Citations

Development of conductive polymeric nanofiber patches for cardiac tissue engineering application

Mousa

Ali

Rezk

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

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“…23 It exhibits enhanced filtration mainly due to corporal sieving, which makes it a promising candidate for air purification. 24,25 Regarding fiber orientation, the randomly arranged fibers have a high rigidity that ultimately results in poor comfort properties for the wearer. 26,27 At present, the air filters for PM capture mostly comprise randomly arranged polymer fibers with diameters ranging from several microns to tens of microns.…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Symmetries of Electrospun Poly(lactic acid) Nanofibers on Facemask Filtration

Kashif

Han

et al. 2023

ACS Appl. Polym. Mater.

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The Covid-19 pandemic has prompted the use of disposable facemasks, which has raised serious environmental concerns. Thus, we developed ultrafine electrospun masks comprising eco-friendly and biodegradable polymer polylactic acid, spun with different degrees of fiber alignments, ranging from random to less, medium, and highly aligned nanofibers. The filtration performance was assessed by penetrating sodium chloride (NaCl) aerosol particles (mean diameter 0.25 μm). The LA-NF samples exhibited a homogeneous network of fibers and thus even pore size distribution. The homogeneity of flow is generally accompanied by a decreased value of pressure drop. Such flow through the gaps (pores) created between the fibers follows Bernoulli’s principle, which revealed an extremely decreased value of pressure drop of 96 Pa and yielded a high filtration efficiency of 99.998% and a Q f of 0.17 Pa–1. The presence of static charges on membranes varies according to the geometry of the surface, which provides a strong electrostatic force between fine particulates and the charged surface. Moreover, a comparative study of static chargeability of the less aligned sample and conventional polypropylene filter was conducted, which revealed mean potential values of 67.1 and 60.8 V, respectively. The outcome implies the superior characteristics of the former, which can be attributed to the surface geometry of the structured membrane.

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Polyurethane nanofibers incorporated magnesium hydroxide followed by hydrothermal treatment using chitosan and silver nanoparticles to improve the biological properties

Rather,

Khan,

Rafiq

et al. 2024

J of Applied Polymer Sci

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The study aimed to explore the potential of magnesium hydroxide (Mg[OH]₂) nanoparticles (NPs) incorporated into polyurethane (PU) fibers, which were further coated with chitosan and silver (Ag) NPs. The hydrothermal approach was adopted to add the properties of chitosan and Ag NPs to the as‐spun fibers. These samples were characterized by field emission scanning electron microscope (FE‐SEM), EDS, Fourier transform infrared spectroscopy, thermogravimetric analysis, and contact angle measurements. The diameter of concocted fibers was found to be 0.79 ± 0.31 μm to 2.5 ± 0.9 μm. The presence of Mg(OH)2 decreased the fiber diameter from 2.05 ± 1.2 μm to 0.79 ± 0.31 μm; however, after hydrothermal coating, the diameter increased from 0.79 ± 0.31 μm to 2.5 ± 0.9 μm. The contact angle on pristine PU showed 105.53 ± 0.8°, that is, hydrophobicity, which was diminished to 9.3 ± 0.8° by the reorientation of PU with Mg(OH)2, chitosan and Ag NPs, that is, indicative of hydrophilic character. Biomineralization was evaluated by incubating in simulated body fluid, and the EDS and FE‐SEM indicated that composite fibers could induce apatite formation. Cell viability was measured using MTT assay, and cell adhesion/proliferation was confirmed by DAPI staining and FE‐SEM. The composite scaffolds promoted 3T3‐L1 to grow confluently.

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Poly(lactic acid)/polyurethane blend electrospun fibers: structural, thermal, mechanical and surface properties

Cited by 14 publications

References 32 publications

Development of conductive polymeric nanofiber patches for cardiac tissue engineering application

Development of conductive polymeric nanofiber patches for cardiac tissue engineering application

Effect of Different Symmetries of Electrospun Poly(lactic acid) Nanofibers on Facemask Filtration

Polyurethane nanofibers incorporated magnesium hydroxide followed by hydrothermal treatment using chitosan and silver nanoparticles to improve the biological properties

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