Polymer network stretching during electrospinning

Israel Greenfeld, Arkadii Arinstein, Kamel Fezzaa, Miriam Rafailovich, Eyal Zussman

Research output: Contribution to conferenceAbstractpeer-review


Fast X-ray phase contrast imaging is used to observe the flow of a semi-dilute polyethylene oxide solution during electrospinning. Micron-size glass particles mixed in the polymer solution allow viewing of the jet flow field, and reveal a high-gradient flow that has both longitudinal and radial components that grow rapidly along the jet. The resulting hydrodynamic forces cause substantial longitudinal stretching and transversal contraction of the polymer network within the jet, as confirmed by random walk simulation and theoretical modeling. The polymer network therefore concentrates towards the jet center, and its conformation may transform from a free state to a fully-stretched state within a short distance from the jet start.
Original languageAmerican English
StatePublished - 2011
EventAPS March Meeting 2011 - Dallas, Texas, United States
Duration: 21 Mar 201125 Mar 2011


ConferenceAPS March Meeting 2011
Country/TerritoryUnited States
CityDallas, Texas


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