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    Effect of solution parameters on electrospun PLA/PCL fibers

    Access Status
    Fulltext not available
    Authors
    Haroosh, Hazim
    Chaudhary, Deeptangshu
    Dong, Yu
    Date
    2011
    Type
    Conference Paper
    
    Metadata
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    Citation
    Haroosh, Hazim J. and Chaudhary, Deeptangshu S and Dong, Yu. 2011. Effect of solution parameters on electrospun PLA/PCL fibers, in Amal, R. and Gomes, V. and Chen, V. (ed), CHEMECA 2011 "Engineering A Better World", Sep 18-21 2011. Sydney, NSW: Engineers Australia.
    Source Title
    Conference Proceedings of CHEMECA 2011 "Engineering A Better World"
    Source Conference
    CHEMECA 2011 "Engineering A Better World"
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/42070
    Collection
    • Curtin Research Publications
    Abstract

    This research work focused on studying two different concentrations of poly (ε-caprolactone) (PCL) and blends of PCL with Poly (lactic acid) (PLA) at five blending rations and that are dissolved in different co-solvents (chloroform: methanol and dichloromethane (DCM) : N,N, dimethylformamide (DMF)). The fibers produced from the DCM:DMF system for all percentages of polymer blends were smaller in fiber diameter as compared to the fibers produced from the chloroform: methanol system. However, it was found that generally, the fiber properties were related to the viscosity and conductivity of their bulk solution. The fiber diameters and the surface morphology were dependent on the PLA/PCL ratio and also on the relevant co-solvent amount. Solution concentration, viscosity, conductivity and solvent volatility were found to be the key factors that controlled the fiber diameter. In addition, the chain entanglements in the solution and the dielectric constant of the solvent have a significant influence on the morphology of the resulting fibers. Furthermore, increasing the PCL amount in blends increased the solution viscosity, and higher viscosity led to electrospun fibers with larger diameters.

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