Synthesis and characterization of hydrophobic cellulose from Khoi fiber

Name: Worranun Wongchompoo

Organization : Silpakorn University. Faculty of Science

Email : wongchompoo_w@silpakorn.edu

Name: Radchada Buntem

Organization : Silpakorn University. Faculty of Science

Email : radchadab@yahoo.com

keyword: Khoi fiber

ThaSH: Cellulose

ThaSH: Microencapsulation

ThaSH: Spectrum analysis

Abstract: Cellulose can be easily hydrophobized using trimethylsilyl groups. The modified cellulose is being used for drug delivery and microencapsulation. In this research, khoi fiber was used as a source of cellulose fiber. Khoi bark was refluxed with 4 percent (w/v) NaOH solution to remove lignin and hemicellulose. The completeness of lignin removal was monitored by IR spectroscopy. 1.0 g of extracted cellulose was soaked in water and N,N-dimethylacetamide (DMA) respectively. The soaked cellulose was dissolved in dimethylacetamide/LiCl and reacted with hexamethyldisilazane (HMDS) yielding trimethylsilylcellulose (K_TMSC). The IR spectrum shows the presence of -Si(CH3)3 groups: νSi-O at 1046 cm-1, νC-Si at 1252, 842 and 749 cm-1. The 1H-NMR result confirms the presence of -Si(CH3)3 groups at = 0 ppm and pyranose ring protons in the range of 3-4 ppm. SEM image of K_TMSC shows the fibrous characteristics of cellulose while the EDX shows the presence of Si. The degree of substitution (DS) values calculated from FT-IR and EDX data are 1.56 and 1.02 respectively. TGA results show the higher stability of cellulose in K_TMSC as compared with that of Khoi fiber after alkali treatment

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2020

Modified: 2024-10-21

Issued: 2024-10-21

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BibliograpyCitation : In the Chemical Society of Thailand under the Patronage of Professor Dr. HRH Princess Chulabhorn in association, Thammasat University Faculty of Science and Technology. The Pure and Applied Chemistry International Conference 2020 (PACCON 2020) (PC199-204). Bangkok : Thammasat University

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