Membran Selulosa Kenaf Terjana Semula daripada Larutan Akues NaOH/Urea yang Digumpal Menggunakan Asid Sulfurik

Azahari, Nor Aziawati; Zakaria, Sarani; Kaco, Hatika; Yee, Gan Sin; Chia, Chin Hua; Jaafar, Sharifah Nabihah Syed; Sajab, Mohd Shaiful

doi:10.17576/jsm-2017-4605-14

Cited by 4 publications

(1 citation statement)

References 17 publications

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“…Cellulose is the most abundant material in the universe and hydrophilic in nature (Azahari et al 2017;. Cellulose has many hydroxyl functional groups on its surface that can be modified using oxidation, esterification, etherification, silylation and polymer grafting methods in order to attach a new functional group for different applications (Lin et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Cellulose Nanomaterial for Urea Biosensor Application

Khalid¹,

Lee²,

Arip³

2018

JSM

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Cellulose nanomaterial with rod-like structure and highly crystalline order, usually formed by elimination of the amorphous region from cellulose during acid hydrolysis. Cellulose nanomaterial with the property of biocompatibility and nontoxicity can be used for enzyme immobilization. In this work, urease enzyme was used as a model enzyme to study the surface modification of cellulose nanomaterial and its potential for biosensor application. The cellulose nanocrystal (CNC) surface was modified using 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation to introduce the carboxyl group at C6 primary alcohol. The success of enzyme immobilization and surface modification was confirmed using chemical tests and measured using UV-Visible spectrophotometer. The immobilization strategy was then applied for biosensor application for urea detection. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques were used for electroanalytical characterization of the urea biosensor.

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Section: Introductionmentioning

confidence: 99%