Physical properties of regenerated kenaf cellulose membrane

Using h2SO4 as coagulant

Nor Aziawati Azahari, Sinyee Gan, Sarani Zakaria, Hatika Kaco, Seyedehmaryam Moosavi

Research output: Contribution to journalArticle

Abstract

Regenerated kenaf cellulose membranes were prepared by dissolving cellulose in a cellulose solvent of sodium hydroxide and urea, followed by coagulating in a sulfuric acid (H2SO4) solution. Different coagulant concentrations and coagulation reaction times were applied to study the morphology, physical and mechanical properties of the prepared cellulose membrane. The crystallinity index, surface morphology, mechanical performance and transparency of cellulose membrane were evaluated using X-ray diffraction (XRD), variable pressure scanning electron microscopy (VPSEM), tensile tests and UV-visible spectroscopy (UV-Vis), respectively. The results revealed changes in the pore size of the cellulose membranes, which were correlated with the concentration of sulfuric acid coagulant. However, the pore size of the membranes was not significantly affected by the coagulation time. Cellulose membranes that had been coagulated in lower concentration sulfuric acid with moderate coagulation time showed desirable mechanical properties. Thus, this study reports a favorable reaction time and coagulant concentration to fabricate regenerated cellulose membranes with desired physical properties.

Original languageEnglish
Pages (from-to)201-207
Number of pages7
JournalCellulose Chemistry and Technology
Volume52
Issue number3-4
Publication statusPublished - 1 Jan 2018

Fingerprint

Coagulants
Cellulose
Physical properties
Membranes
Coagulation
Sulfuric acid
Pore size
Mechanical properties
Sodium Hydroxide
Ultraviolet spectroscopy
Urea
Transparency
Surface morphology
Sodium
X ray diffraction
Scanning electron microscopy

Keywords

  • Coagulation
  • Kenaf core pulp
  • NaOH/urea solvent system
  • Rapid dissolution method
  • Regenerated cellulose membranes

ASJC Scopus subject areas

  • Organic Chemistry
  • Materials Chemistry

Cite this

Physical properties of regenerated kenaf cellulose membrane : Using h2SO4 as coagulant. / Azahari, Nor Aziawati; Gan, Sinyee; Zakaria, Sarani; Kaco, Hatika; Moosavi, Seyedehmaryam.

In: Cellulose Chemistry and Technology, Vol. 52, No. 3-4, 01.01.2018, p. 201-207.

Research output: Contribution to journalArticle

Azahari, Nor Aziawati ; Gan, Sinyee ; Zakaria, Sarani ; Kaco, Hatika ; Moosavi, Seyedehmaryam. / Physical properties of regenerated kenaf cellulose membrane : Using h2SO4 as coagulant. In: Cellulose Chemistry and Technology. 2018 ; Vol. 52, No. 3-4. pp. 201-207.
@article{9aa3a100847845de93154d6890f242aa,
title = "Physical properties of regenerated kenaf cellulose membrane: Using h2SO4 as coagulant",
abstract = "Regenerated kenaf cellulose membranes were prepared by dissolving cellulose in a cellulose solvent of sodium hydroxide and urea, followed by coagulating in a sulfuric acid (H2SO4) solution. Different coagulant concentrations and coagulation reaction times were applied to study the morphology, physical and mechanical properties of the prepared cellulose membrane. The crystallinity index, surface morphology, mechanical performance and transparency of cellulose membrane were evaluated using X-ray diffraction (XRD), variable pressure scanning electron microscopy (VPSEM), tensile tests and UV-visible spectroscopy (UV-Vis), respectively. The results revealed changes in the pore size of the cellulose membranes, which were correlated with the concentration of sulfuric acid coagulant. However, the pore size of the membranes was not significantly affected by the coagulation time. Cellulose membranes that had been coagulated in lower concentration sulfuric acid with moderate coagulation time showed desirable mechanical properties. Thus, this study reports a favorable reaction time and coagulant concentration to fabricate regenerated cellulose membranes with desired physical properties.",
keywords = "Coagulation, Kenaf core pulp, NaOH/urea solvent system, Rapid dissolution method, Regenerated cellulose membranes",
author = "Azahari, {Nor Aziawati} and Sinyee Gan and Sarani Zakaria and Hatika Kaco and Seyedehmaryam Moosavi",
year = "2018",
month = "1",
day = "1",
language = "English",
volume = "52",
pages = "201--207",
journal = "Cellulose Chemistry and Technology",
issn = "0576-9787",
publisher = "Editura Academiei Romane",
number = "3-4",

}

TY - JOUR

T1 - Physical properties of regenerated kenaf cellulose membrane

T2 - Using h2SO4 as coagulant

AU - Azahari, Nor Aziawati

AU - Gan, Sinyee

AU - Zakaria, Sarani

AU - Kaco, Hatika

AU - Moosavi, Seyedehmaryam

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Regenerated kenaf cellulose membranes were prepared by dissolving cellulose in a cellulose solvent of sodium hydroxide and urea, followed by coagulating in a sulfuric acid (H2SO4) solution. Different coagulant concentrations and coagulation reaction times were applied to study the morphology, physical and mechanical properties of the prepared cellulose membrane. The crystallinity index, surface morphology, mechanical performance and transparency of cellulose membrane were evaluated using X-ray diffraction (XRD), variable pressure scanning electron microscopy (VPSEM), tensile tests and UV-visible spectroscopy (UV-Vis), respectively. The results revealed changes in the pore size of the cellulose membranes, which were correlated with the concentration of sulfuric acid coagulant. However, the pore size of the membranes was not significantly affected by the coagulation time. Cellulose membranes that had been coagulated in lower concentration sulfuric acid with moderate coagulation time showed desirable mechanical properties. Thus, this study reports a favorable reaction time and coagulant concentration to fabricate regenerated cellulose membranes with desired physical properties.

AB - Regenerated kenaf cellulose membranes were prepared by dissolving cellulose in a cellulose solvent of sodium hydroxide and urea, followed by coagulating in a sulfuric acid (H2SO4) solution. Different coagulant concentrations and coagulation reaction times were applied to study the morphology, physical and mechanical properties of the prepared cellulose membrane. The crystallinity index, surface morphology, mechanical performance and transparency of cellulose membrane were evaluated using X-ray diffraction (XRD), variable pressure scanning electron microscopy (VPSEM), tensile tests and UV-visible spectroscopy (UV-Vis), respectively. The results revealed changes in the pore size of the cellulose membranes, which were correlated with the concentration of sulfuric acid coagulant. However, the pore size of the membranes was not significantly affected by the coagulation time. Cellulose membranes that had been coagulated in lower concentration sulfuric acid with moderate coagulation time showed desirable mechanical properties. Thus, this study reports a favorable reaction time and coagulant concentration to fabricate regenerated cellulose membranes with desired physical properties.

KW - Coagulation

KW - Kenaf core pulp

KW - NaOH/urea solvent system

KW - Rapid dissolution method

KW - Regenerated cellulose membranes

UR - http://www.scopus.com/inward/record.url?scp=85048395303&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85048395303&partnerID=8YFLogxK

M3 - Article

VL - 52

SP - 201

EP - 207

JO - Cellulose Chemistry and Technology

JF - Cellulose Chemistry and Technology

SN - 0576-9787

IS - 3-4

ER -