Electrospun sheet materials from CA, PES and PLLA as supports for ALD coating

    Research output: Contribution to conferenceConference articleScientificpeer-review

    Abstract

    Electrospinning is a method that can be used in the production of polymeric nanofibres. Polymer solution is drawn into sub-µm to nanosized fibres utilizing electric field. The structure of electrospun web has intrinsic properties such as small fibre diameter, small pore size, and high specific surface area which are beneficial for various applications. In addition, fibres can be functionalized in various methods. Thin (nm scale), conformal coatings made by atomic layer deposition (ALD) can be used for functionalization. For example, metal oxides can provide interesting properties, such as electronic, antimicrobial, self-cleaning and hydrophobic properties among others, to fibrous materials. Combining electrospinning and thicker ALD layer enables also preparation of sub-µm tubes, if core fibres are removed. Aim of this work was to make electrospun fibres from three polymers, cellulose acetate (CA), polyether sulphone (PES) and poly-L-lactide (PLLA) to be used as substrates for ALD. In this presentation we will report preparation electrospun fibres using solvent mixtures, structure of electrospun sheets (PLLA shown as an example), and preliminary results of ALD carried out on electrospun sheets, as well as discuss the possibilities of ALD method in functionalization and processing of electrospun fibres.
    Original languageEnglish
    Publication statusPublished - 2017
    EventInternational Conference on Electrospinning : From Design and Processing to Advanced Nanomaterials and Applications, electrospinCY_2017 - Nicosia, Cyprus
    Duration: 20 Apr 201722 Apr 2017

    Conference

    ConferenceInternational Conference on Electrospinning : From Design and Processing to Advanced Nanomaterials and Applications, electrospinCY_2017
    Abbreviated titleelectrospinCY_2017
    CountryCyprus
    CityNicosia
    Period20/04/1722/04/17

    Keywords

    • electrospinning
    • atomic layer deposition

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