Densification of fibre-reinforced composite polymers under rotational moulding conditions

D. Castellanos, P. Martin, M. McCourt, M. Kearns, J. Butterfield, P. Cassidy

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
42 Downloads (Pure)


The present work investigated the effect of fibre's presence on the densification of rotomoulding-grade polyethylene. Nevertheless, the presence of fibres during densification directly impacts the current understanding of how densification works during heating. The present work focuses fibre-reinforced polymer densification to study the effect of fibre addition on bubble formation during this process. A densification test was developed to observe and measure fibre addition's effect on polymer densification and bubble disappearance. The test focused on measuring the cross-section area corresponding to bubbles appearing in the melt and comparing results to clarify whether fibre addition alters this process. Results showed that, although heating parameters and particle size affect bubble morphology and disappearance, fibres’ presence does not substantially affect the bubbles. Finally, results showed that polymer-fibre characterisation plays a crucial role in sintering and densification, and work is continuing to present conclusions about how sintering and densification affect the full-scale manufacturing process.
Original languageEnglish
Pages (from-to)423-435
Number of pages13
JournalPlastics, Rubber And Composites: Macromolecular Engineering
Issue number8
Early online date18 Aug 2022
Publication statusPublished - 14 Sept 2022


  • Materials Chemistry
  • Polymers and Plastics
  • General Chemical Engineering
  • Ceramics and Composites


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