Cellulose nanocrystal reinforced liquid natural rubber toughened unsaturated polyester

Effects of filler content and surface treatment on its morphological, thermal, mechanical, and viscoelastic properties

Hanieh Kargarzadeh, Rasha M. Sheltami, Ishak Ahmad, Ibrahim Abdullah, Alain Dufresne

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Abstract Cellulose nanocrystals (CNCs) isolated from kenaf bast fibers were used to reinforce unsaturated polyester resin (UPR) composites toughened with liquid natural rubber (LNR). The surface of the CNCs was modified with silane, and the effects of this treatment on the morphological, tensile, and thermal properties of the resulting composites were studied. Electron micrographs show that the CNCs are well dispersed in the UPR and the rubber phase and that the rubber particles are smaller in the nanocellulose composites. Tensile tests show that untreated CNC-LNR-UPR composites are as strong as toughened UPR. The tensile modulus increases significantly with either treated or untreated CNC content of the composites. The impact resistance of UPR increases as LNR and then CNCs are added, with the best results obtained with silane-treated CNCs. The viscoelastic behavior and the thermal resistance of the composites also improve upon addition of both treated and untreated CNCs.

Original languageEnglish
Article number17943
Pages (from-to)51-59
Number of pages9
JournalPolymer (United Kingdom)
Volume71
DOIs
Publication statusPublished - 9 Jul 2015

Fingerprint

Polyesters
Rubber
Cellulose
Nanocrystals
Surface treatment
Fillers
Polyester resins
Liquids
Composite materials
Silanes
Composite Resins
Kenaf fibers
Bast fibers
Impact resistance
Hot Temperature
Tensile properties
Heat resistance
Thermodynamic properties
Elastic moduli
Electrons

Keywords

  • cellulose nanocrystals
  • Kenaf bast fiber
  • Liquid natural rubber
  • Mechanical properties
  • Surface treatment
  • Toughness
  • Unsaturated polyester resin

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

Cite this

Cellulose nanocrystal reinforced liquid natural rubber toughened unsaturated polyester : Effects of filler content and surface treatment on its morphological, thermal, mechanical, and viscoelastic properties. / Kargarzadeh, Hanieh; Sheltami, Rasha M.; Ahmad, Ishak; Abdullah, Ibrahim; Dufresne, Alain.

In: Polymer (United Kingdom), Vol. 71, 17943, 09.07.2015, p. 51-59.

Research output: Contribution to journalArticle

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AU - Sheltami, Rasha M.

AU - Ahmad, Ishak

AU - Abdullah, Ibrahim

AU - Dufresne, Alain

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N2 - Abstract Cellulose nanocrystals (CNCs) isolated from kenaf bast fibers were used to reinforce unsaturated polyester resin (UPR) composites toughened with liquid natural rubber (LNR). The surface of the CNCs was modified with silane, and the effects of this treatment on the morphological, tensile, and thermal properties of the resulting composites were studied. Electron micrographs show that the CNCs are well dispersed in the UPR and the rubber phase and that the rubber particles are smaller in the nanocellulose composites. Tensile tests show that untreated CNC-LNR-UPR composites are as strong as toughened UPR. The tensile modulus increases significantly with either treated or untreated CNC content of the composites. The impact resistance of UPR increases as LNR and then CNCs are added, with the best results obtained with silane-treated CNCs. The viscoelastic behavior and the thermal resistance of the composites also improve upon addition of both treated and untreated CNCs.

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