Chemically crosslinked hydrogel and its driving force towards superabsorbent behaviour

Kushairi Mohd Salleh, Sarani Zakaria, Sajab Mohd Shaiful, Sinyee Gan, Chin Hua Chia, Sharifah Nabihah Syed Jaafar, Umar Adli Amran

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Dissolved oil palm empty fruit bunch (EFB) cellulose in NaOH/urea solvent was mixed with sodium carboxymethylcellulose (NaCMC) to form a green regenerated superabsorbent hydrogel. The effect of concentration of epichlorohydrin (ECH) as the crosslinker on the formation, physical, and chemical properties of hydrogel was studied. Rapid formation and higher gel content of hydrogel were observed at 10% concentration of ECH. The superabsorbent hydrogel was successfully fabricated in this study with the swelling ability >100,000%. Hydrogel with higher concentration of ECH showed opposite trend by having higher superabsorbent property than that of lower concentration. The covalent bond of C–O–C was observed with Attenuated total reflectance fourier transform infrared (ATR-FT-IR) spectroscopy to confirm the occurrence of crosslinking. The physical and chemical properties of hydrogel were affected by swelling phenomenon. Hydrogel with higher degree of swelling exhibited lower moisture retention and higher transparency. Moreover, the weight of the superabsorbent hydrogel increased with the decrement of pH value of external media (distilled water). This study provided substantial information on the effect of different percentage of ECH as crosslinker on hydrogel basic properties. Furthermore, this study affords correlation of many essential driving forces that affected hydrogel superabsorbent property.

Original languageEnglish
Pages (from-to)1422-1430
Number of pages9
JournalInternational Journal of Biological Macromolecules
Volume118
DOIs
Publication statusPublished - 15 Oct 2018

Fingerprint

Hydrogel
Epichlorohydrin
Swelling
Chemical properties
Physical properties
Carboxymethylcellulose Sodium
Palm oil
Covalent bonds
Fourier Transform Infrared Spectroscopy
Fruits
Cellulose
Crosslinking
Transparency
Urea
Fruit
Oils
Moisture
Gels
Weights and Measures
Water

Keywords

  • Degree of swelling
  • Gel fraction
  • Moisture retention

ASJC Scopus subject areas

  • Structural Biology
  • Biochemistry
  • Molecular Biology

Cite this

Chemically crosslinked hydrogel and its driving force towards superabsorbent behaviour. / Salleh, Kushairi Mohd; Zakaria, Sarani; Mohd Shaiful, Sajab; Gan, Sinyee; Chia, Chin Hua; Syed Jaafar, Sharifah Nabihah; Amran, Umar Adli.

In: International Journal of Biological Macromolecules, Vol. 118, 15.10.2018, p. 1422-1430.

Research output: Contribution to journalArticle

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