Morphological, thermal, and mechanical properties of starch biocomposite films reinforced by cellulose nanocrystals from rice husks

Nurain Johar, Ishak Ahmad

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

A series of glycerol-plasticized starch composites reinforced by rice-husk cellulose nanocrystals was successfully fabricated through the solution casting technique. The rice husks must undergo alkali treatment, bleaching, and sulphuric acid hydrolysis before cellulose nanocrystals can be produced. The cellulose nanocrystal content used as filler was varied from 0 to 10 wt%. The thermal stability of the composite were analysed by thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG). The starch biocomposite films reinforced with rice-husk cellulose nanocrystals showed improved tensile strengths and tensile moduli. Transmission electron microscopy (TEM) was used to determine the diameter and length distribution of the cellulose nanocrystals. Field emission scanning electron microscopy (FESEM) showed that the cellulose nanocrystals (CNCs) were well distributed in the matrix. At the optimum 6% filler loading, the cellulose nanocrystals exhibited a higher reinforcing efficiency in the plasticized starch biocomposites than at any other filler loading.

Original languageEnglish
Pages (from-to)5469-5477
Number of pages9
JournalBioResources
Volume7
Issue number4
Publication statusPublished - 2012

Fingerprint

Starch
Cellulose
starch
Nanocrystals
cellulose
mechanical property
Thermodynamic properties
rice
Mechanical properties
Fillers
Thermogravimetric analysis
thermogravimetry
Composite materials
Alkalies
bleaching
Bleaching
Glycerol
tensile strength
Field emission
sulfuric acid

Keywords

  • Cellulose nanocrystals
  • Rice husk
  • Solution casting
  • Starch biocomposites

ASJC Scopus subject areas

  • Waste Management and Disposal
  • Environmental Engineering
  • Bioengineering

Cite this

Morphological, thermal, and mechanical properties of starch biocomposite films reinforced by cellulose nanocrystals from rice husks. / Johar, Nurain; Ahmad, Ishak.

In: BioResources, Vol. 7, No. 4, 2012, p. 5469-5477.

Research output: Contribution to journalArticle

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