Isolation and fractionation of cellulose nanocrystals from Kenaf Core

Hanisah Syed Sulaiman, Chi Hoong Chan, Chin Hua Chia, Sarani Zakaria, Sharifah Nabihah Syed Jaafar

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In this study, cellulose nanocrystals (CNC) were produced using acid hydrolysis method. Kenaf core was pretreated with 4 wt. % sodium hydroxide (NaOH), followed by bleaching using 1.7 wt. % sodium chlorite (NaClO2) in acetate buffer. The bleached fiber was acid hydrolyzed for 45 and 55 min using 64 wt. % sulfuric acid (H2SO4). The size distribution of the CNC segregated via differential centrifugation with different speed was also investigated. The CNC suspension obtained was centrifuged at 3000, 6000, 9000 and 12000 rpm. The resultant CNC suspension collected was characterized using Fourier transform infrared (FTIR) analysis, X-ray diffraction (XRD) and transmission electron microscopy (TEM). FTIR results showed the progressive removal of non-cellulosic constituents for each subsequent treatment. It also showed that the CNC produced after hydrolysing for 55 min has the highest degree of crystallinity (81.15%). CNC produced from acid hydrolysis process of 45 min have lengths between 50 and 270 nm while CNC produced from acid hydrolysis process of 55 min have length around 40 to 370 nm.

Original languageEnglish
Pages (from-to)1635-16432
Number of pages14798
JournalSains Malaysiana
Volume44
Issue number11
Publication statusPublished - 1 Nov 2015

Fingerprint

nanocrystals
kenaf
fractionation
cellulose
acid hydrolysis
chlorites
sodium hydroxide
sulfuric acid
bleaching
X-ray diffraction
centrifugation
transmission electron microscopy
buffers
acetates
sodium
acids

Keywords

  • Acid hydrolysis
  • Cellulose nanocrystal
  • Kenaf core

ASJC Scopus subject areas

  • General

Cite this

Isolation and fractionation of cellulose nanocrystals from Kenaf Core. / Sulaiman, Hanisah Syed; Chan, Chi Hoong; Chia, Chin Hua; Zakaria, Sarani; Syed Jaafar, Sharifah Nabihah.

In: Sains Malaysiana, Vol. 44, No. 11, 01.11.2015, p. 1635-16432.

Research output: Contribution to journalArticle

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