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    A novel epoxy/electrospun PLA nanofibre composite material: Fabrication and characterisation

    Access Status
    Fulltext not available
    Authors
    Dong, Yu
    Mosaval, Tariq
    Haroosh, Hazim
    Date
    2013
    Type
    Conference Paper
    
    Metadata
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    Citation
    Dong, Y. and Mosaval, T. and Haroosh, H.J. 2013. A novel epoxy/electrospun PLA nanofibre composite material: Fabrication and characterisation, in Epaarachchi, J. and Lau, A. and Leng, J. (ed), Proceedings of The 4th International Conference on Smart Materials and Nanotechnology in Engineering (SMN), Jul 10-12 2013, pp. 879302-1-879302-6. Gold Coast, Australia: Society of Photo-Optical Instrumentation Engineers (SPIE).
    Source Title
    Proceedings of SPIE for the Fourth International Conference onSmart Materials and Nanotechnology in Engineering
    Source Conference
    The 4th International Conference on Smart Materials and Nanotechnology in Engineering (SMN 2013)
    DOI
    10.1117/12.2025370
    ISBN
    9780819496300
    URI
    http://hdl.handle.net/20.500.11937/48128
    Collection
    • Curtin Research Publications
    Abstract

    Electrospun nanofibres as the potential reinforcement in manufacturing composite materials are recently attractive due to their simple fabrication process via electrospinning to produce continuous fibrous structures. This study concentrates on the development of novel epoxy composites laminated by layers of electrospun polylactic acid (PLA) nanofibre mats to evaluate their mechanical and thermal properties by means of flexural testing and differential scanning calorimetry (DSC), respectively. The moulded composite sheets were prepared at the fibre contents of 3 wt%, 5 wt% and 10 wt% using a solution casting method. The flexural moduli of composites have been shown to be increased by 50.8% and 24.0% for 5 wt% and 10 wt% fibre contents, respectively, as opposed to that of neat epoxy. This similar trend was also found for corresponding flexural strengths being increased by 31.6% and 4.8%. However, the flexural properties become worse at the fibre content of 3 wt% with decreases of flexural modulus by 36.9% and flexural strength by 22.9%. The examination of fractured surface morphology of composites using scanning electron microscopy (SEM) confirms a full penetration of cured epoxy matrix into electrospun PLA nanofibres despite some existences of typical fibrous structures/networks detected inside the large void cavities. On the other hand, the glass transition temperatures of composites have increased to 54-60°C due to the addition of electrospun fibres as compared to 50°C for that of epoxy, indicating that those fibrous networks may further restrict the intermolecular mobility of matrix for thermal effects.

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