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

Translated title of the contribution: Regenerated kenaf cellulose membrane from NaOH/urea aqueous solution by coagulating with sulphuric acid

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

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Regenerated cellulose membranes (RC) from kenaf core pulp have been produced using the pre cool method and coagulated using sulfuric acid (H2SO4) solution. RC prepared from kenaf cellulose was dissolved in NaOH/urea solvent and subsequently coagulated with H2SO4 solution at concentration 5-12 wt. % for 1-10 min. The effects of concentration of acid and coagulating time on the structure, pore size, mechanical properties and transparency of RC were studied using X-ray diffraction (XRD), variable pressure scanning electron microscopy (VPSEM), tensile tester and spectrometer ultra violet (UV-Vis) transmission, respectively. The results from VPSEM showed the pore size of the membranes changed as a function of the concentration of H2SO4 coagulant, whereas it was hardly changed with coagulation time. RC membranes coagulated in 10 wt. % concentration of H2SO4 solution and 5 min coagulation time exhibited better mechanical properties with tensile strength value 41.9 and 43.5 MPa, respectively. Thus, this work provided an optimal coagulation condition for preparing RC membranes in the solvent system and scientific information for controlling the properties and pore sizes of the membranes.

Original languageMalay
Pages (from-to)795-801
Number of pages7
JournalSains Malaysiana
Volume46
Issue number5
DOIs
Publication statusPublished - 1 May 2017

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Cellulose
Urea
Membranes
Acids
Coagulation
Pore size
Mechanical properties
Coagulants
Scanning electron microscopy
Transparency
Pulp
Spectrometers
Tensile strength
X ray diffraction

ASJC Scopus subject areas

  • General

Cite this

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; Syed Jaafar, Sharifah Nabihah; Mohd Shaiful, Sajab.

In: Sains Malaysiana, Vol. 46, No. 5, 01.05.2017, p. 795-801.

Research output: Contribution to journalArticle

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abstract = "Regenerated cellulose membranes (RC) from kenaf core pulp have been produced using the pre cool method and coagulated using sulfuric acid (H2SO4) solution. RC prepared from kenaf cellulose was dissolved in NaOH/urea solvent and subsequently coagulated with H2SO4 solution at concentration 5-12 wt. {\%} for 1-10 min. The effects of concentration of acid and coagulating time on the structure, pore size, mechanical properties and transparency of RC were studied using X-ray diffraction (XRD), variable pressure scanning electron microscopy (VPSEM), tensile tester and spectrometer ultra violet (UV-Vis) transmission, respectively. The results from VPSEM showed the pore size of the membranes changed as a function of the concentration of H2SO4 coagulant, whereas it was hardly changed with coagulation time. RC membranes coagulated in 10 wt. {\%} concentration of H2SO4 solution and 5 min coagulation time exhibited better mechanical properties with tensile strength value 41.9 and 43.5 MPa, respectively. Thus, this work provided an optimal coagulation condition for preparing RC membranes in the solvent system and scientific information for controlling the properties and pore sizes of the membranes.",
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AU - Azahari, Nor Aziawati

AU - Zakaria, Sarani

AU - Kaco, Hatika

AU - Yee, Gan Sin

AU - Chia, Chin Hua

AU - Syed Jaafar, Sharifah Nabihah

AU - Mohd Shaiful, Sajab

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