Abstract
High cellulose solubility is an essential to successful production of regenerated cellulose, from which hydrogels can be produced. Additionally, some pretreatment usually facilitates cellulose solubility. Bleached cellulose pulp from kenaf core (BK), consisting of lignin (0.3%), hemicellulose (5.2%) and ash (0%), was treated with an electron beam irradiation (EBI) at 10, 30, 50 and 70 kGy. The BK and irradiated bleached cellulose pulp (IK) were then dissolved in either sodium hydroxide/urea or lithium hydroxide/urea solvents which subsequently crosslinked with epichlorohydrin (ECH) solution to stabilize the formation of regenerated cellulose hydrogels. The amount of α-cellulose component in IK samples decreased as much as 38% and caused the viscosity average molecular weight (Mv) and degree of polymerization of IK samples to be reduced significantly by 84 and 87%, respectively. This resulted in an increase in cellulose solubility (up to 30%) for the IK samples in both solvent systems. However, this treatment resulted in a reduction in the overall cellulose fibre strength. X-ray diffraction of the hydrogels showed a transformation from cellulose I to amorphous cellulose. These hydrogels exhibited a higher degree of swelling, transparency and porosity compared to hydrogels prepared from non-irradiated pulp.
| Original language | English |
|---|---|
| Pages (from-to) | 1-14 |
| Number of pages | 14 |
| Journal | Cellulose |
| DOIs | |
| Publication status | Accepted/In press - 9 Jul 2018 |
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Keywords
- Cellulose dissolution
- Electron beam irradiation
- Glycosidic bond
- Ionizing radiation
- Regenerated cellulose
- Treatment
ASJC Scopus subject areas
- Polymers and Plastics
Cite this
Increased solubility of plant core pulp cellulose for regenerated hydrogels through electron beam irradiation. / Mohammad Padzil, Farah Nadia; Gan, Sinyee; Zakaria, Sarani; Mohamad, Siti Fatahiyah; Mohamed, Nor Hasimah; Seo, Yung Bum; Ellis, Amanda V.
In: Cellulose, 09.07.2018, p. 1-14.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Increased solubility of plant core pulp cellulose for regenerated hydrogels through electron beam irradiation
AU - Mohammad Padzil, Farah Nadia
AU - Gan, Sinyee
AU - Zakaria, Sarani
AU - Mohamad, Siti Fatahiyah
AU - Mohamed, Nor Hasimah
AU - Seo, Yung Bum
AU - Ellis, Amanda V.
PY - 2018/7/9
Y1 - 2018/7/9
N2 - High cellulose solubility is an essential to successful production of regenerated cellulose, from which hydrogels can be produced. Additionally, some pretreatment usually facilitates cellulose solubility. Bleached cellulose pulp from kenaf core (BK), consisting of lignin (0.3%), hemicellulose (5.2%) and ash (0%), was treated with an electron beam irradiation (EBI) at 10, 30, 50 and 70 kGy. The BK and irradiated bleached cellulose pulp (IK) were then dissolved in either sodium hydroxide/urea or lithium hydroxide/urea solvents which subsequently crosslinked with epichlorohydrin (ECH) solution to stabilize the formation of regenerated cellulose hydrogels. The amount of α-cellulose component in IK samples decreased as much as 38% and caused the viscosity average molecular weight (Mv) and degree of polymerization of IK samples to be reduced significantly by 84 and 87%, respectively. This resulted in an increase in cellulose solubility (up to 30%) for the IK samples in both solvent systems. However, this treatment resulted in a reduction in the overall cellulose fibre strength. X-ray diffraction of the hydrogels showed a transformation from cellulose I to amorphous cellulose. These hydrogels exhibited a higher degree of swelling, transparency and porosity compared to hydrogels prepared from non-irradiated pulp.
AB - High cellulose solubility is an essential to successful production of regenerated cellulose, from which hydrogels can be produced. Additionally, some pretreatment usually facilitates cellulose solubility. Bleached cellulose pulp from kenaf core (BK), consisting of lignin (0.3%), hemicellulose (5.2%) and ash (0%), was treated with an electron beam irradiation (EBI) at 10, 30, 50 and 70 kGy. The BK and irradiated bleached cellulose pulp (IK) were then dissolved in either sodium hydroxide/urea or lithium hydroxide/urea solvents which subsequently crosslinked with epichlorohydrin (ECH) solution to stabilize the formation of regenerated cellulose hydrogels. The amount of α-cellulose component in IK samples decreased as much as 38% and caused the viscosity average molecular weight (Mv) and degree of polymerization of IK samples to be reduced significantly by 84 and 87%, respectively. This resulted in an increase in cellulose solubility (up to 30%) for the IK samples in both solvent systems. However, this treatment resulted in a reduction in the overall cellulose fibre strength. X-ray diffraction of the hydrogels showed a transformation from cellulose I to amorphous cellulose. These hydrogels exhibited a higher degree of swelling, transparency and porosity compared to hydrogels prepared from non-irradiated pulp.
KW - Cellulose dissolution
KW - Electron beam irradiation
KW - Glycosidic bond
KW - Ionizing radiation
KW - Regenerated cellulose
KW - Treatment
UR - http://www.scopus.com/inward/record.url?scp=85049622069&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85049622069&partnerID=8YFLogxK
U2 - 10.1007/s10570-018-1933-x
DO - 10.1007/s10570-018-1933-x
M3 - Article
AN - SCOPUS:85049622069
SP - 1
EP - 14
JO - Cellulose
JF - Cellulose
SN - 0969-0239
ER -