Enhanced mandrel design for electrospinning aligned fiber mats from low volatility solvents

Bhattacharya, S.; Woodcock, Corey; Linhardt, Robert J.; Plawsky, Joel L.

doi:10.1002/pen.25622

Cited by 4 publications

(3 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Integral fibers mat easily removable from the target was obtained, suggesting the production of a structure with improved mechanical properties compared to those with random fibers. 43,44,48 3.4 | Core-shell structure evaluation Hydrophilic materials, such as PVA, have an affinity with water and tends to adsorb it on their surface. PHBV, however, is a hydrophobic material that tends to repel water molecules when in contact with it.…”

Section: Influence Of Collector Type On Coreshell Fibersmentioning

confidence: 99%

Poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate)core‐shellspun fibers produced by solution blow spinning for bioactive agent's encapsulation

Carlos

Mancipe

Dias

et al. 2021

J of Applied Polymer Sci

View full text Add to dashboard Cite

Electrospinning is a widely used technology for micro-and nanofibers production. However, when in situ fibers deposition or immobilization of specific agents is required, solution blow spinning (SBS) is a safer alternative. In this work, SBS system was used to produce core-shell fibers with potential use in bioactive agent delivery. Two biodegradable polymers (poly(lactic acid) -PLA and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) -PHBV) were processed with different working distances and air pressure to evaluate the influence of these variables as well as the characteristics of polymers on the fiber morphology. PHBV fibers present the best morphology with fewer defects and beads, although these fibers show larger diameters (from 2.03 to 2.27 μm) compared to PLA fibers (from 0.54 to 2.03 μm). Moreover, deposition of PHBV fibers is not significantly affected by the processing variables, indicating stability under SBS processing. PHBV is firstly used as a matrix to encapsulate hydrophilic bioactive in core-shell structure via SBS. This structure allows the sustained release of lipase even after 14 days, evidencing the efficiency of the core-shell fibers in producing controlled release systems. Core-shell aligned fibers with a reduced diameter (from 3.07 to 1.42 μm) are produced replacing the static target with a rotating collector.

show abstract

Section: Influence Of Collector Type On Coreshell Fibersmentioning

confidence: 99%

Poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate)core‐shellspun fibers produced by solution blow spinning for bioactive agent's encapsulation

Carlos

Mancipe

Dias

et al. 2021

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Researchers have proposed versatile methods to form aligned fibers 19 – 23 . Recently, Cui et al fabricated an aligned PCL membrane with chitosan to control the release of encapsulated ciprofloxacin.…”

Section: Introductionmentioning

confidence: 99%

An origami-based technique for simple, effective and inexpensive fabrication of highly aligned far-field electrospun fibers

Hosseinian

Jimenez-Moreno

Sher

et al. 2023

Sci Rep

View full text Add to dashboard Cite

Fabrication of highly aligned fibers by far-field electrospinning is a challenging task to accomplish. Multiple studies present advances in the alignment of electrospun fibers which involve modification of the conventional electrospinning setup with complex additions, multi-phased fabrication, and expensive components. This study presents a new collector design with an origami structure to produce highly-aligned far-field electrospun fibers. The origami collector mounts on the rotating drum and can be easily attached and removed for each round of fiber fabrication. This simple, effective, and inexpensive technique yields high-quality ultra-aligned fibers while the setup remains intact for other fabrication types. The electrospun poly(ɛ-caprolactone) (PCL) fibers were assessed by scanning electron microscope (SEM), fiber diameter distribution, water contact angle (WCA), Fast Fourier Transform analysis (FFT), surface plot profile, and pixel intensity plots. We thoroughly explored the impact of influential parameters, including polymer concentration, injection rate, collector rotation speed, distance from the collector to the tip, and needle gauge number on fibers’ quality and alignment. Moreover, we employed machine learning algorithms to predict the outcomes and classify the high-quality fibers instead of low-quality productions.

show abstract

“…Recently, with the advent of nanotechnology, the importance of crystallization behavior in nanosized domains, formed in practical systems, have gained more attention. [67][68][69][70] Samanta et al [71] recently reported on the crystallization behavior of a mixture of PEO and polycarprolactone (PCL) confined within the PS matrix in electrospun nanofibers of PS/PEO/PCL ternary blends. The total weight fraction of PEO/PCL mixture was less than 0.2 such that it was present as a dispersed domain in the PS matrix.…”

Section: Introductionmentioning

confidence: 99%

Frustrated crystallization behavior under hierarchical confinement in electrospun fibers of poly(styrene)/poly(ethylene oxide)/poly(l‐lactide) ternary mixtures

Pal

Srivastava

Nandan

2023

Polymer Engineering & Sci

View full text Add to dashboard Cite

The crystallization behavior of binary crystalline mixtures composed of poly(ethylene oxide) (PEO) and poly(l‐lactide) (PLLA) was investigated in the electrospun nanofibers fabricated by the ternary blends of polystyrene (PS), PEO, and PLLA. The weight fraction of PEO/PLLA mixture was kept at ≤0.2 such that PS formed the matrix phase. The preferred mixing of PEO and PLLA resulted in the formation of mixed PEO/PLLA dispersed domains in the PS matrix. The small diameter of the electrospun nanofibers restricted the size of dispersed domain. During cooling from melt, PLLA crystallized first resulting in crystallization induced phase separation and entrapment of PEO within the intracrystalline regions of PLLA crystals. Hence, whereas the PLLA crystallized within the soft PS matrix, the crystallization of PEO occurred within the hierarchical confinement imposed by the PLLA crystals as well as the glassy PS matrix. Interestingly, it was found that the confinement favored the formation of α crystals phase in PLLA even at very low crystallization temperatures. Furthermore, due to plausible entrapment of PEO segments within the PLLA crystals, significant depression in PLLA melting temperature was observed. Moreover, the PEO melting temperature also depressed by more than 30°C due to the frustrated crystallization within the hierarchical confinement.

show abstract

Enhanced mandrel design for electrospinning aligned fiber mats from low volatility solvents

Cited by 4 publications

References 22 publications

Poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate)core‐shellspun fibers produced by solution blow spinning for bioactive agent's encapsulation

Poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate)core‐shellspun fibers produced by solution blow spinning for bioactive agent's encapsulation

An origami-based technique for simple, effective and inexpensive fabrication of highly aligned far-field electrospun fibers

Frustrated crystallization behavior under hierarchical confinement in electrospun fibers of poly(styrene)/poly(ethylene oxide)/poly(l‐lactide) ternary mixtures

Contact Info

Product

Resources

About