| 江蓠提取琼胶后残渣制备羧甲基纤维素的研究 |
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| 引用本文： | 刘生利,杨磊,李思东,宋康丽,麦彩云,吴迪,刘润明.江蓠提取琼胶后残渣制备羧甲基纤维素的研究[J].辽宁化工,2010,39(12):1232-1235. |
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| 作者姓名： | 刘生利 杨磊 李思东 宋康丽 麦彩云 吴迪 刘润明 |
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| 作者单位： | [1]广东海洋大学食品科技学院,广东湛江524088 [2]广东海洋大学理学院,广东湛江524088 |
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| 摘 要： | 对富含纤维素的江蓠提取琼胶后的残渣进行前处理,再加入20倍质量的8%NaOH溶液,经100℃蒸煮2 h便制得江蓠粗纤维素。纤维素经NaOH(质量比3:1)25℃碱化处理45 min后,加入氯乙酸(质量比2.5:1)于65℃进行羧甲基化反应2 h,得到的羧甲基纤维素(CMC)取代度达0.70,红外图谱与试剂CMC相似度高,热分析结果表明实验所得CMC稳定性良好。
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| 关 键 词： | 江蓠 江蓠琼胶残渣 羧甲基纤维素（CMC） 热重分析 |
Preparation of Sodium Carboxymethylcellulose From Gracilari Residue After Extracting Agar |
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| LIU Sheng-li,YANG Lei,LI Si-dong,SONG Kang-li,MAI Cai-yun,WU Di,LIU Run-ming.Preparation of Sodium Carboxymethylcellulose From Gracilari Residue After Extracting Agar[J].Liaoning Chemical Industry,2010,39(12):1232-1235. |
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| Authors: | LIU Sheng-li YANG Lei LI Si-dong SONG Kang-li MAI Cai-yun WU Di LIU Run-ming |
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| Affiliation: | 1. College of Food Science, Guangdong Ocean University, Zhanjiang 524088, China; 2. College of Science, Guangdong Ocean University, Zhanjiang 524088, China) |
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| Abstract: | Residue from agar production with gracilari is rich cellulose. The residue was dried, ground to pass 20 mesh screen, then the powder was extracted by 20 times mass NaOH of 8% at 100 ℃ for 3 h to prepare crude gracilaria cellulose, the cellulose was alkalized with 2 times mass of NaOH at 25 ℃ for 45 rain. Through carboxy methylation of chloroacetic acid at 65 ℃ for 2 h , sodium carboxymethylcellulose with substituting degree of 0.70 was gained, its IR spectrum agrees with that of CMC reagent.The thermal analysis results show that its thermal stability is good. |
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| Keywords: | Residue Agargracilari Preparation CMC |
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