Synthesis and characterisation of novel Halloysite Nanotubes/chitosan composite membranes

R. T. De Silva, P. Pasbakhsh, G. K. Lim, C. S. Piao

    Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

    Abstract

    Novel membranes of chitosan/Halloysite Nanotubes (HNTs) nanocomposites were prepared using solution casting method by adding 2 wt%, 5 wt%, 10 wt% and 15 wt% of HNTs. Mechanical properties, such as Young's modulus and tensile strength of nanocomposites at 5w% of HNTs significantly improved by 21% and 34%, respectively, compared to unreinforced chitosan membranes. At high HNT concentrations mechanical properties were slightly inferior to the chitosan membranes with 5 wt% of HNTs, due to the aggregation of HNTs. Scanning electron microscopy (SEM) of membranes at 2 % and 5 wt% of HNTs showed low amounts of pulled-out nanotubes which confirmed the presence of more embedded nanotubes inside the chitosan matrix as well as less amounts of micro-voids at the fractured surface of chitosan/HNTs nanocomposites. FTIR shows possible interaction of external surface siloxane groups of the HNTs with the matrix. Thermal Gravimetric Analysis (TGA) revealed that thermal stability of nanocomposites increased by increasing the HNTs concentrations.

    Original languageEnglish
    Title of host publicationECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials
    PublisherEuropean Conference on Composite Materials, ECCM
    ISBN (Print)9788888785332
    Publication statusPublished - 2012
    EventEuropean Conference on Composite Materials 2012 - Venice Congress Center, Venice, Italy
    Duration: 24 Jun 201228 Jun 2012
    Conference number: 15th
    http://www.eccm15.org/

    Conference

    ConferenceEuropean Conference on Composite Materials 2012
    Abbreviated titleECCM 2012
    CountryItaly
    CityVenice
    Period24/06/1228/06/12
    Internet address

    Keywords

    • Chitosan
    • Halloysite nanotubes
    • Solution casting

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