Role of chain entanglements on fiber formation during electrospinning of polymer solutions: good solvent, non-specific polymer–polymer interaction limit

Shenoy, Suresh L.; Bates, W. Douglas; Frisch, H. L.; Wnek, Gary E.

doi:10.1016/j.polymer.2005.03.011

Cited by 1,054 publications

(888 citation statements)

References 63 publications

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“…molecular weight, the entanglement density increases with concentration of the polymer and minimises 'bead on string' fi ber morphology. [ 26 ] The minimum molecular weight determines the critical chain overlap concentration. Fiber morphologies are shown to be greatly affected by critical chain overlap concentration.…”

Section: Resultsmentioning

confidence: 99%

Forming of Polymer Nanofibers by a Pressurised Gyration Process

Muthusubramanian

Edirisinghe

2013

Macromol. Rapid Commun.

201

296

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A new route consisting of simultaneous centrifugal spinning and solution blowing to form polymer nanofibers is reported. The fiber diameter (60–1000 nm) is shown to be a function of polymer concentration, rotational speed, and working pressure of the processing system. The fiber length is dependent on the rotational speed. The process can deliver 6 kg of fiber per hour and therefore offers mass production capabilities compared with other established polymer nanofiber generation methods such as electrospinning, centrifugal spinning, and blowing.

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Section: Resultsmentioning

confidence: 99%

Forming of Polymer Nanofibers by a Pressurised Gyration Process

Muthusubramanian

Edirisinghe

2013

Macromol. Rapid Commun.

201

296

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“…Solution properties of polymer compositions and their influence on morphology of nanofibers It was well documented [36][37][38][39][40] that the process of electrospinning is affected or controlled by process parameters such as spinning voltage, solution flow rate, solvent volatility and the distance between the needle tip and the ground electrode. The structure and morphology of electrospun fibers are also influenced or regulated by solution properties, such as polymer content, polymer molecular weight, viscosity, conductivity, dielectric constant and surface tension.…”

Section: Electrospinning Of Ea-pva Blendsmentioning

confidence: 99%

“…The structure and morphology of electrospun fibers are also influenced or regulated by solution properties, such as polymer content, polymer molecular weight, viscosity, conductivity, dielectric constant and surface tension. [36][37][38][39][40] In electrospinning, one of the conditions required for the formation of nanofibers is that the polymer solution should have an optimum viscosity. Below the optimal viscosity, electrospraying of a solution occurs; above the threshold, the polymer is dried.…”

Section: Electrospinning Of Ea-pva Blendsmentioning

confidence: 99%

“…With an increase in viscosity, the entanglements of polymer chains are increased, which is required to maintain the continuity of the jet during electrospinning. [36][37][38][39][40] Surface tension also has an important role in nanofiber formation. If surface tension is dominant over viscosity, fibers containing beads are formed because of the presence of more solvent molecules and fewer chain entanglements.…”

Section: Electrospinning Of Ea-pva Blendsmentioning

confidence: 99%

“…At higher viscosity, the amount of polymer chain entanglements is increased, and the charges on the electrospinning jet allow the polymer solution to stretch with an even distribution of solvent molecules; hence, smooth and continuous nanofibers are formed. [36][37][38][39][40] In our studies, the processing parameters were fixed to study the influences of solution properties on the morphology of formed nanofibers.…”

Section: Electrospinning Of Ea-pva Blendsmentioning

confidence: 99%

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Development of non-woven nanofibers of egg albumen-poly (vinyl alcohol) blends: influence of solution properties on morphology of nanofibers

Rathna

Jog

Gaikwad

2011

Polym J

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Egg albumen (EA), a highly functional globular protein with desirable properties, is the least-explored material for biomaterial applications, although it is available in abundance. In our studies, we explored the viability of EA and various blends with biocompatible and non-toxic poly (vinyl alcohol) (PVA) to produce nanofibers for biomedical applications. EA and PVA blends were prepared in various compositions. Electrospinning was used to fabricate non-woven nanofibers. Solution properties, such as viscosity and electrical conductivity, were evaluated for various prepared solutions. Solution viscosity increased with increasing polymer concentration. Solutions with higher contents of EA recorded increased conductivity, which decreased with increasing PVA content. The influence of solution properties on the morphological appearance of as-spun products was studied using scanning electron microscopy. Instead of nanofibers, nanoparticles and microparticles of EA were produced at even higher contents. In contrast, a gradual increase in the addition of PVA content to 8% EA solution resulted in the transformation of particles from large agglomerates to very fine fibers (E100 nm in diameter) because of the influence of polymer content, viscosity and conductivity. The polymer-polymer interactions in the prepared materials have been validated by Fourier transform infrared spectroscopy, differential scanning calorimetry, X-ray diffraction and gel electrophoresis.

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Electrospinning

2007

Encyclopedia of Polymer Science and Technology

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Electrostatic fiber spinning or “electrospinning,” employs electrostatic forces to eject a charged fluid jet from a nozzle to make a fiber. Generally, the fiber is laid down on a collector to form a nonwoven mat. Electrospinning is also directly related to a well‐established process called electrospraying, in which tiny droplets are obtained instead of fibers. Almost any material that can be spun from melt or solution by conventional methods can be electrospun into fibers. This article details the electrospinning process. Theoretical background information is also supplied. Electrospinning devices come in different shapes and sizes and these are described. The dynamics of electrospinning are complex. A general guide to the effects of fiber properties and processing parameters on fiber diameter is given. Electrospun products include tissue scaffolds, inorganic nanofibers for catalysis, carbon nanofibers, composite fibers, and mats.

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Role of chain entanglements on fiber formation during electrospinning of polymer solutions: good solvent, non-specific polymer–polymer interaction limit

Cited by 1,054 publications

References 63 publications

Forming of Polymer Nanofibers by a Pressurised Gyration Process

Forming of Polymer Nanofibers by a Pressurised Gyration Process

Development of non-woven nanofibers of egg albumen-poly (vinyl alcohol) blends: influence of solution properties on morphology of nanofibers

Electrospinning

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