|
Carboxymethyl cellulose from rice stubble waste |
|---|---|
| รหัสดีโอไอ | |
| Creator | 1. Pattrathip Rodsamran 2. Rungsinee Sothornvit |
| Title | Carboxymethyl cellulose from rice stubble waste |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2563 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 42 |
| Journal No. | 2 |
| Page no. | 454-460 |
| Keyword | rice stubble, waste, carboxymethyl cellulose, degree of substitution, purity |
| URL Website | https://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | Rice stubble is an agricultural waste with 30.67% yield of cellulose (90.05% ?-cellulose content) to be synthesized ascarboxymethyl cellulose (CMC). Hemicellulose and lignin were first removed and later rice stubble cellulose was swollen in30% NaOH and isopropanol as a solvent. Synthesis conditions such as chloroacetic acid content (57 g in 5 g of alkali cellulose),reaction temperature (50 and 70 ?C) and time (180, 270 and 360 min) were investigated to obtain CMC from rice stubble(CMCr). The 7 g of chloroacetic acid at 50?C for 180 min provided the best quality of CMCr based on 5 g of rice stubble cellulose with degree of substitution, viscosity and purity of 0.64, 36.03 cP and 90.18%, respectively. The presence of carboxymethylsubstituents was verified by Fourier transform infrared spectroscopy. CMCr showed commercially low viscosity material andpossibly used as a film forming packaging material for food and pharmaceutical products. |
