Journal ArticleDOI
Structure and process relationship of electrospun bioabsorbable nanofiber membranes
TLDR
In this paper, an electrospinning method was used to fabricate bioabsorbable amorphous poly( d, l -lactic acid) (PDLA) and semi-crystalline poly( l-lactic acids) (PLLA) nanofiber non-woven membranes for biomedical applications.About:
This article is published in Polymer.The article was published on 2002-07-01. It has received 1779 citations till now. The article focuses on the topics: Nanofiber & Membrane.read more
Citations
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Biomedical Applications of Electrospun Nanofibers: Drug and Nanoparticle Delivery
TL;DR: This review provides a compilation of studies involving the use of electrospun fibers in biomedical applications with emphasis on nanoparticle-impregnated nanofibers.
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Mechanical properties and in vitro degradation of electrospun bio-nanocomposite mats from PLA and cellulose nanocrystals
TL;DR: Compared with neat PLA mats, the nanocomposite mats, especially at high CNC-loading levels, degraded more rapidly in phosphate-buffered saline solution.
Journal ArticleDOI
Controlling numbers and sizes of beads in electrospun nanofibers
TL;DR: In this article, the effects of solvents, weight concentrations and salt additives on the number and morphology of beads in the electrospinning process have not been systematically studied, and both theoretical analysis and experimental results show that beads strongly depend upon solvers, weight concentration and salt additive, and that a suitable weight concentration or a suitable salt additive can completely prevent the occurrence of beads.
Journal ArticleDOI
Electrospun poly(L-lactide-co-glycolide) biodegradable polymer nanofibre tubes for peripheral nerve regeneration
T. B. Bini,Shujun Gao,Ter Chyan Tan,Shu Wang,Aymeric Y.T. Lim,Lim Ben Hai,Seeram Ramakrishna +6 more
TL;DR: These new poly(L-lactide-co-glycolide) nanofibre conduits can be effective aids for nerve regeneration and repair and may lead to clinical applications.
Journal ArticleDOI
Solvent and concentration effects on the properties of electrospun poly(ethylene terephthalate) nanofiber mats
Abstract: This study describes the preparation and characterization of nanofibrous mats obtained by electrospinning poly(ethylene terephthalate) (PET) solutions in trifluoroacetic acid/dichloromethane (TFA/DCM). Special attention was paid to the effect of polymer concentration and solvent properties on the morphology, structure, and mechanical and thermal properties of the electrospun nonwovens. The results show that the spinnable concentration of PET solution in TFA/DCM solvents is above 10 wt %. Mats have nanofibrous morphology with fibers having an average diameter in the range of 200–700 nm (depending on polymer concentration and solvent composition) and an interconnected pore structure. Higher solution concentration favors the formation of uniform fibers without beads and with higher diameter. Morphology and fiber assembly changed with the solvent properties. Solvent mixtures rich in TFA, i.e., those with higher dielectric constant and lower surface tension, originated fibers with small diameter. However, due to the lower volatility, those solvent mixtures also produced more branched and crosslinking fibers, with less morphologic uniformity. Mechanical properties (Young's modulus, ultimate strength, and elongation at break) and thermal properties (glass transition, crystallization, and melting) have been studied for the PET electrospun nanomats and compared with those of the original polymer. Solvent effect on fiber crystallinity was not significant, but a complex effect was observed on the mechanical properties of the electrospun mats, as a consequence of the different structural organization of the fibers within the mat network. © 2008 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 46: 460–471, 2008
References
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Journal ArticleDOI
Electrospinning process and applications of electrospun fibers
Jayesh Doshi,Darrell H. Reneker +1 more
TL;DR: In this article, the authors describe the electrospinning process, the processing conditions, fiber morphology, and some possible uses of electrospun fibers, and describe the diameter of these fibers in the range of 0.05 to 5 microns.
Journal ArticleDOI
Disintegration of Water Drops in an Electric Field
TL;DR: In this article, it was shown that a conical interface between two fluids can exist in equilibrium in an electric field, but only when the cone has a semi-vertical angle 49.3$^\circ$.
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Bending instability of electrically charged liquid jets of polymer solutions in electrospinning
TL;DR: In this paper, the authors analyzed and explained the reasons for the instability of a viscous jet of polymer solution at a pendent droplet, showing that the longitudinal stress caused by the external electric field acting on the charge carried by the jet stabilized the straight jet for some distance.
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Electrically driven jets
TL;DR: Van Dyke as mentioned in this paper measured the potentials at which viscous jets or drops first appear in a parallel electric field and compared with calculations of A. B. Basset and found that their stability is due to mechanical rather than electrical causes, like a stretched string, which is straight when pulled but bent when pushed.