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Publication
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| Title of Article |
Preparation and mechanism analysis of morphology-controlled cellulose nanocrystals by H2SO4 hydrolysis of Eucalyptus pulp |
| Date of Acceptance |
19 November 2022 |
| Journal |
| Title of Journal |
Engineering and Applied science Research (EASR) |
| Standard |
SCOPUS |
| Institute of Journal |
Engineering and Applied Science Research (EASR) Faculty of Engineering, Khon Kaen University |
| ISBN/ISSN |
25396161, 25396218 |
| Volume |
2022 |
| Issue |
49 |
| Month |
9 |
| Year of Publication |
2022 |
| Page |
753-762 |
| Abstract |
Cellulose from Eucalyptus pulp has been used as raw material for producing cellulose nanocrystals (CNCs). In this research work,
H2SO4 hydrolysis was utilized in the production of CNCs. The effects of hydrolysis parameters, namely, H2SO4 concentration (30, 40,
and 50 wt%), hydrolysis time (30, 60, and 90 min), and hydrolysis temperature (60, 70, and 80 °C), on the CNC structure were
examined. The physical and chemical properties of Eucalyptus pulp and CNCs were characterized using different techniques such as
X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmittance
electron microscopy (TEM), and thermal gravimetric analysis (TGA). The results showed the optimal condition was at 50 wt% of
H2SO4 concentration, 60 min hydrolysis time, and 60 °C hydrolysis temperature, which yielded 75.51% ± 1.51 % of crystallinity and
4.03 ± 0.10 nm of crystal size. Furthermore, it was also determined that an increase in H2SO4 concentration, time, or temperature led
to a lower percentage of crystallinity and reduction in crystal size. CNCs were noted to be more thermally stable than the Eucalyptus
pulp. Thus, this method could be an alternative way to create a new product in the paper industry.
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| Keyword |
Cellulose nanocrystals, Eucalyptus pulp, H2SO4 hydrolysis |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
false |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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