Cellulose nanocrystal

A promising toughening agent for unsaturated polyester nanocomposite

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

Research output: Contribution to journalArticle

82 Citations (Scopus)

Abstract

New nanocomposites of an unsaturated polyester resin (UPR) and cellulose nanocrystals (CNCs) were prepared. Effects of CNC silane surface treatment on the morphology, mechanical and thermal properties, viscoelastic behavior and water absorption of CNC reinforced UPR have been studied. The results showed that the crystallinity index of the CNCs reduced after the surface treatment. However, it did not impact the size and aspect ratio of the rod-like nanoparticles. Tensile tests showed that both the strength and stiffness of the UPR improved upon the incorporation of silane treated CNCs (STCNCs), whereas no signifi cant changes were observed on the impact energy after the treatment. Interestingly, the impact energy increased significantly with the addition of untreated CNCs. The viscoelastic behavior and thermal degradation for both the CNC and STCNC-reinforced nanocomposites were improved. The waterabsorption behavior of the UPR was found to decrease upon incorporation of CNCs, and a further reduction was observed with STCNCs.

Original languageEnglish
Pages (from-to)346-357
Number of pages12
JournalPolymer (United Kingdom)
Volume56
DOIs
Publication statusPublished - 15 Jan 2015

Fingerprint

Polyesters
Toughening
Cellulose
Nanocrystals
Nanocomposites
Silanes
Polyester resins
Surface treatment
Water absorption
Aspect ratio
Pyrolysis
Thermodynamic properties
Stiffness
Nanoparticles
Mechanical properties

Keywords

  • Cellulose nanocrystal (CNC)
  • Surface treatment
  • Unsaturated polyester resin (UPR)

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

Cite this

Cellulose nanocrystal : A promising toughening agent for unsaturated polyester nanocomposite. / Kargarzadeh, Hanieh; Sheltami, Rasha M.; Ahmad, Ishak; Abdullah, Ibrahim; Dufresne, Alain.

In: Polymer (United Kingdom), Vol. 56, 15.01.2015, p. 346-357.

Research output: Contribution to journalArticle

Kargarzadeh, Hanieh ; Sheltami, Rasha M. ; Ahmad, Ishak ; Abdullah, Ibrahim ; Dufresne, Alain. / Cellulose nanocrystal : A promising toughening agent for unsaturated polyester nanocomposite. In: Polymer (United Kingdom). 2015 ; Vol. 56. pp. 346-357.
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