Citation
Ismawati P., . and Paridah M.T., . and Sarani Z., . and Jalaluddin H., . and Mohamad Zaki A.R., . and Kamaruddin H., . (2006) Synthesis and evaluation of carboxymethylated kenaf core CMKC. [Proceedings Paper]
Abstract
Carboxymethylated kenaf core CMKC was prepared in a completely heterogeneous procedure in isopropanol solution that has been activated with aqueous sodium hydroxide 25-40 w/v and sodium minochloroacetate SMCA was used as the etherfying agent. The extent of carboxymethylation reaction was studied with respect to the degree of substitutions DS of the carboxymethylcellulose reaction efficiencyRE and weight percent gain WPG at different reaction times: 1 2 and 3 hrs at 55 omnicron C reaction temperature. The reaction with 30 concentration of sodium hydroxide at 55 omnicron C was found to be the most optimum after 2 hours which leads to DS of 0.87 for CMKC free lignin. The FTIR spectrum of CMKC showed the typical absorptions of the cellulose backbone as well as peaks at about 1610-1420 cm-1 indicating the presence of the carboxymethyl ether group attach on the molecular chain of cellulose.
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Abstract
Carboxymethylated kenaf core CMKC was prepared in a completely heterogeneous procedure in isopropanol solution that has been activated with aqueous sodium hydroxide 25-40 w/v and sodium minochloroacetate SMCA was used as the etherfying agent. The extent of carboxymethylation reaction was studied with respect to the degree of substitutions DS of the carboxymethylcellulose reaction efficiencyRE and weight percent gain WPG at different reaction times: 1 2 and 3 hrs at 55 omnicron C reaction temperature. The reaction with 30 concentration of sodium hydroxide at 55 omnicron C was found to be the most optimum after 2 hours which leads to DS of 0.87 for CMKC free lignin. The FTIR spectrum of CMKC showed the typical absorptions of the cellulose backbone as well as peaks at about 1610-1420 cm-1 indicating the presence of the carboxymethyl ether group attach on the molecular chain of cellulose.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | 11 ills. 11 refs. |
| AGROVOC Term: | LIGASES |
| AGROVOC Term: | CARBOXYMETHYLCELLULOSE |
| AGROVOC Term: | KENAF |
| AGROVOC Term: | ETHERS |
| AGROVOC Term: | MALAYSIA |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:28 |
| URI: | http://webagris.upm.edu.my/id/eprint/16899 |
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