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Sustainable sandwich structures made from bottle caps core and aluminium skins: A statistical approach

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)362-371
Number of pages10
JournalThin-Walled Structures
Early online date4 Jul 2018
DateAccepted/In press - 1 Jun 2018
DateE-pub ahead of print - 4 Jul 2018
DatePublished (current) - 1 Sep 2018


This work further investigates the manufacture and characterisation of a sustainable sandwich panel made from aluminium skins and a recycled thermoplastic bottle cap core, an innovative concept proposed in a previous paper. A full factorial design based on Design of Experiments (DoE) and Analysis of Variance (ANOVA) techniques has highlighted the complex influence of three manufacturing parameters (type of polymeric adhesive, adhesive layer thickness layer and core packing topology) on the absolute and specific physical and flexural properties of the panels. The ANOVA revealed that the use of higher amount of epoxy polymer led to enhanced panel strength and stiffness. The cell packing topology, however, did not provide a significant effect on most panel properties. Discarded bottle caps have proven to be a promising lightweight and inexpensive honeycomb component for structural applications.

    Research areas

  • Bottle caps waste, Design of Experiments, Recycling, Sandwich composites, Tubular honeycomb

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  • Full-text PDF (accepted author manuscript)

    Rights statement: This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Elsevier at . Please refer to any applicable terms of use of the publisher.

    Accepted author manuscript, 4.68 MB, PDF document

    Licence: CC BY-NC-ND


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