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Electrospinning: Quiz

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Question 1: Electrospinning shares characteristics of both ________ and conventional solution dry spinning[1] of fibers.
ElectrosprayAnalytical chemistryElectrospray ionizationTaylor cone

Question 2: What does the following picture show?

  a Polyvinyl alcohol long fibre - epoxy matrix composite - the section thickness is about 12 micrometres
  electrospun polyvinyl alcohol reinforcing fibre mat
  Figure 1 Photograph of a meniscus of polyvinyl alcohol in aqueous solution showing a fibre being electrospun from a Taylor cone.

Question 3: What does the following picture show?

  Figure 2 How the distribution of charge in the fibre changes as the fibre dries during flight
  Schematic of an electrospinning setup, shown without a syringe pump.
  Scanning electron microscope picture of electrospun polycaprolactone fibers.

Question 4: What does the following picture show?

  Schematic of an electrospinning setup, shown without a syringe pump.
  Lycopodium club moss spores (diameter about 60 micrometres) captured on an electrospun polyvinyl alcohol fibre
  Figure 3 A constant pressure laboratory electrospinning machine (set up for horizontal fibre production)
  Lycopodium club moss spores (diameter about 60 micrometres) captured on an electrospun polyvinyl alcohol fibre

Question 5: These scaffolds fulfil a similar purpose as the ________ in natural tissue.
Extracellular matrixCollagenElastic fiberHistology

Question 6: The second property should allow electrospun fibres to approach the theoretical maximum strength of the spun material, opening up the possibility of making high mechanical performance ________.
Fiber reinforced concretePolyesterComposite materialCarbon fiber-reinforced polymer

Question 7: What does the following picture show?

  Diagram showing fibre formation by electrospinning
  Lycopodium club moss spores (diameter about 60 micrometres) captured on an electrospun polyvinyl alcohol fibre
  Scanning electron microscope picture of electrospun polycaprolactone fibers.
  electrospun polyvinyl alcohol reinforcing fibre mat

Question 8: What does the following picture show?

  Diagram showing fibre formation by electrospinning
  Lycopodium club moss spores (diameter about 60 micrometres) captured on an electrospun polyvinyl alcohol fibre
  Diagram showing fibre formation by electrospinning
  electrospun polyvinyl alcohol reinforcing fibre mat

Question 9: What does the following picture show?

  Figure 2 How the distribution of charge in the fibre changes as the fibre dries during flight
  a Polyvinyl alcohol long fibre - epoxy matrix composite - the section thickness is about 12 micrometres
  Scanning electron microscope picture of electrospun polycaprolactone fibers.
  Schematic of an electrospinning setup, shown without a syringe pump.

Question 10: The jet is then elongated by a whipping process caused by ________ repulsion initiated at small bends in the fibre, until it is finally deposited on the grounded collector.
Electric chargeLorentz forceMaxwell's equationsElectrostatics







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