Effect of phosphoric acid on the morphology and tensile properties of halloysite-polyurethane composites

Tayser Sumer Gaaz, Hasan Mohammed Luaibi, Ahmed A. Al-Amiery, Abdul Amir H. Kadhum

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The high aspect ratio of nanoscale reinforcements enhances the tensile properties of pure polymer matrix. The composites were first made by adding halloysite nanotubes (HNTs) at low weight percentages of 1, 2, and 3 wt% to thermoplastic polyurethane (TPU). Then, HNTs were phosphoric acid-treated before adding to TPU at same weight percentage to create phosphoric acid HNTs-TPU composites. The samples were fabricated using injection moulding. The HNTs-TPU composites were characterized according to the tensile properties including tensile strength, tensile strain and Young's modulus. The loading has shown its highest tensile values at 2 wt% HNTs loading and same findings are shown with the samples that treated with phosphoric acid. The tensile strength increased to reach 24.65 MPa compare with the 17.7 MPa of the neat TPU showing about 26% improvement. For the phosphoric acid-treated composites, the improvement has reached 35% compared to the neat sample. Regarding the tensile stain, the improvement was about 83% at 2 wt% HNTs loading. For Young's modulus, the results obtained in this study have shown that Young's modulus is linearly improved with either the loading content or the phosphoric acid treated achieving its highest values at 3 wt% HNTs of 14.53 MPa and 16.27 MPa for untreated and treated, respectively. FESEM results showed that HNTs were well dispersed in TPU matrix. Thus, HNTs-TPU has improved tensile properties compared with pure TPU due to the addition of nanofiller.

Original languageEnglish
Pages (from-to)33-38
Number of pages6
JournalResults in Physics
Volume9
DOIs
Publication statusPublished - 1 Jun 2018

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phosphoric acid
tensile properties
nanotubes
composite materials
modulus of elasticity
tensile strength
low weight
injection molding
matrices
reinforcement
high aspect ratio
polymers

Keywords

  • Composite
  • Nanotube
  • Phosphoric treated
  • Tensile property

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Effect of phosphoric acid on the morphology and tensile properties of halloysite-polyurethane composites. / Gaaz, Tayser Sumer; Luaibi, Hasan Mohammed; Al-Amiery, Ahmed A.; Kadhum, Abdul Amir H.

In: Results in Physics, Vol. 9, 01.06.2018, p. 33-38.

Research output: Contribution to journalArticle

Gaaz, Tayser Sumer ; Luaibi, Hasan Mohammed ; Al-Amiery, Ahmed A. ; Kadhum, Abdul Amir H. / Effect of phosphoric acid on the morphology and tensile properties of halloysite-polyurethane composites. In: Results in Physics. 2018 ; Vol. 9. pp. 33-38.
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