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Physicochemical characterization of cellulose nanocrystal and nanoporous self-assembled CNC membrane derived from Ceiba pentandra

Mohamad, Azuwa Mohamed and Wan Salleh, Wan Norharyati and Jaafar, Juhana and Ismail, Ahmad Fauzi and Abd Mutalib, Muhazri and Mohamad, Abu Bakar and Mohd. Zain, Muhammad Fauzi and Awang, Nor Asikin and Mohd. Hir, Zul Adlan (2017) Physicochemical characterization of cellulose nanocrystal and nanoporous self-assembled CNC membrane derived from Ceiba pentandra. Carbohydrate Polymers, 157 . pp. 1892-1902. ISSN 0144-8617

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Official URL: https://doi.org/10.1016/j.carbpol.2016.11.078

Abstract

This research involves the rare utilisation of the kapok fibre (Ceiba pentandra) as a raw material for the fabrication of cellulose nanocrystal (CNC) and self-assembled CNC membranes. The isolation of CNC from Ceiba pentandra began with the extraction of cellulose via the chemical alkali extraction by using 5 wt% NaOH, followed by the typical acidified bleaching method and, finally, the CNC production through acid hydrolysis with 60 wt% H2SO4 at the optimum time of 60 min. The prepared CNC was then employed for the preparation of self-assembled membrane through the water suspension casting evaporation technique. The obtained CNC membrane was characterised in terms of its composition, crystallinity, thermal stability, as well as, structural and morphological features with the use of several techniques including FTIR, XRD, AFM, TEM, FESEM, and TGA. The FESEM and AFM analyses had illustrated the achievement of a self-assembled CNC membrane with a smooth surface and a well-distributed nano-porous structure, with the porosity of 52.82 ± 7.79%. In addition, the findings proved that the self-assembled CNC membrane displayed good adsorption capability indicated by the recorded efficiency of 79% and 85% for 10 mg/L and 5 mg/L of methylene blue in an aqueous solution, respectively.

Item Type:Article
Additional Information:RADIS System Ref No:PB/2016/05954
Uncontrolled Keywords:cellulose nanocrystal, kapok fiber
Subjects:T Technology > TP Chemical technology
L Education
Divisions:Chemical Engineering
ID Code:66460
Deposited By: Fazli Masari
Deposited On:03 Oct 2017 16:06
Last Modified:03 Oct 2017 16:06

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