The viscoelastic interaction between dispersed and continuous phase of PCL/HA-PVA oil-in-water emulsion uncovers the theoretical and experimental basis for fiber formation during emulsion electrospinning

Pal, Jit; Wu, Dongbo; Hakkarainen, Minna; Srivastava, Rajiv K.

doi:10.1016/j.eurpolymj.2017.09.004

Cited by 24 publications

(25 citation statements)

References 33 publications

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“…The surface tension and electrical conductivity (Table 1) the emulsions showed a Newtonian behavior. Although SPI has a pseudoplastic behavior, blending with PVA changes it to Newtonian, as previously observed for polycaprolactone (PCL) with PVA blends (Pal et al, 2017) and, thus, if further diluted in emulsion form, this rheological behavior was expected.…”

Section: Characterization Of the O/w Emulsionssupporting

confidence: 59%

Electrospun β-carotene–loaded SPI:PVA fiber mats produced by emulsion-electrospinning as bioactive coatings for food packaging

Bruni

Oliveira

Gómez‐Mascaraque

et al. 2020

Food Packaging and Shelf Life

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In this work, emulsion electrospinning was used to develop an active internal coating for food packaging applications. Specifically, the antioxidant molecule β-carotene, was encapsulated in a mixture of soy protein isolate (SPI) and polyvinyl alcohol (PVA) which was directly electrospun onto a polyhydroxybutyrate-co-valerate (PHB92/PHV8) film. An annealing treatment was applied to improve the adhesion of the electrospun mat onto the packaging film, which contributed to modulate the release of the active compound. Stable SPI:PVA emulsions (with a 50:50 ratio) were developed using soybean oil (SBO) as carrier of the hydrophobic -carotene. The encapsulation efficiency of β-carotene in the electrospun SPI:PVA fibers was 65.0% ± 2.6 %, being 51.4 % ± 0.9 % effectively incorporated into their cores. Finally, the in-vitro release assay of the antioxidant in soybean oil, which simulates fatty foods, demonstrated that the heat treatment (anneling) contributed to a slower and more sustained released of the bioactive compound.

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Section: Characterization Of the O/w Emulsionssupporting

confidence: 59%

Electrospun β-carotene–loaded SPI:PVA fiber mats produced by emulsion-electrospinning as bioactive coatings for food packaging

Bruni

Oliveira

Gómez‐Mascaraque

et al. 2020

Food Packaging and Shelf Life

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“…All the emulsion combinations exhibited non-Newtonian shear thinning property under the application of shear rate ( Figure 4 a). It has been reported [ 47 ] that sufficient chain entanglement was necessary among the polymers for initiation of uninterrupted electrospinning yielding fibers in diameter submicron range. Viscosity with both very low and high values might result in beaded nanofibers; an optimum value of viscosity in the range of 0.1 to 2 Pa-s is preferred for spinning [ 48 ].…”

Section: Resultsmentioning

confidence: 99%

Core-Shell Nanofibrous Scaffold Based on Polycaprolactone-Silk Fibroin Emulsion Electrospinning for Tissue Engineering Applications

et al. 2018

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The vast domain of regenerative medicine comprises complex interactions between specific cells’ extracellular matrix (ECM) towards intracellular matrix formation, its secretion, and modulation of tissue as a whole. In this domain, engineering scaffold utilizing biomaterials along with cells towards formation of living tissues is of immense importance especially for bridging the existing gap of late; nanostructures are offering promising capability of mechano-biological response needed for tissue regeneration. Materials are selected for scaffold fabrication by considering both the mechanical integrity and bioactivity cues they offer. Herein, polycaprolactone (PCL) (biodegradable polyester) and ‘nature’s wonder’ biopolymer silk fibroin (SF) are explored in judicious combinations of emulsion electrospinning rather than conventional electrospinning of polymer blends. The water in oil (W/O) emulsions’ stability is found to be dependent upon the concentration of SF (aqueous phase) dispersed in the PCL solution (organic continuous phase). The spinnability of the emulsions is more dependent upon the viscosity of the solution, dominated by the molecular weight of PCL and its concentration than the conductivity. The nanofibers exhibited distinct core-shell structure with better cytocompatibility and cellular growth with the incorporation of the silk fibroin biopolymer.

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“…All the emulsion combinations exhibited non-Newtonian shear thinning property under the application of shear rate. It has been reported [37] that sufficient chain entanglement was necessary among the polymers for initiation of uninterrupted electrospinning yielding fibers in diameter submicron range. Viscosity with both very low and high values might result in beaded nanofibers; an optimum value of viscosity in the range of 0.1 to 2 Pa-s is preferred for spinning [35].…”

Section: Viscositymentioning

confidence: 99%

Fabrication of Electrospun Polycaprolactone/Gelatin Composite Nanofibrous Scaffolds with Cellular Responses

Kannaiyan¹,

Khare²,

Narayanan³

et al. 2019

NANO

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Numerous wound care products have been investigated for skin tissue engineering. Factors which influence to skin substitute selection are condition of patient, wound depth, infection in wound. Other factors which also play role in deciding skin substitute are cost, its availability, ease of storage, required operative interventions. With perspective of Indian market, commercial available skin substitutes are either costly or their availability restricted to major cities only. A cost effective skin substitute is strongly needed to heal wounds with minimal scarring and maximum function. The aim of this study was to investigate the possibility of synthetic scaffold loaded with Wharton's jelly derived Mesenchymal stem cells and to access the role of scaffolds in proliferation and differentiation of MSCs in-vitro, in order to achieve for the healing of wound graft substitutes with improved biological properties. As a result, WJ-MSCs were isolated, harvested and seeded on the surface of the fabricated PCL/GE nanofibrous scaffold. The biological properties and growth of MSCs were studied for antiinflammation, cytotoxicity, cell proliferation, and SEM analysis indicated that the fabricated synthetic scaffold supported cells attachment, viability, and proliferation of cells. The characterization studies of nanofibers were studied for ATR-FTIR, XRD, TEM, viscosity, and degradation studies suggest that the nanofibrous scaffold loaded with stem cells could be an excellent tissue-engineered skin base for wound healing and skin regeneration.

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The viscoelastic interaction between dispersed and continuous phase of PCL/HA-PVA oil-in-water emulsion uncovers the theoretical and experimental basis for fiber formation during emulsion electrospinning

Cited by 24 publications

References 33 publications

Electrospun β-carotene–loaded SPI:PVA fiber mats produced by emulsion-electrospinning as bioactive coatings for food packaging

Electrospun β-carotene–loaded SPI:PVA fiber mats produced by emulsion-electrospinning as bioactive coatings for food packaging

Core-Shell Nanofibrous Scaffold Based on Polycaprolactone-Silk Fibroin Emulsion Electrospinning for Tissue Engineering Applications

Fabrication of Electrospun Polycaprolactone/Gelatin Composite Nanofibrous Scaffolds with Cellular Responses

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