| 鲍鱼多糖Hal-A的热分析研究 |
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| 引用本文： | 佘志刚,胡谷平,郭志勇,林永成,林木良. 鲍鱼多糖Hal-A的热分析研究[J]. 有机化学, 2003, 23(10): 1149-1151 |
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| 作者姓名： | 佘志刚 胡谷平 郭志勇 林永成 林木良 |
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| 作者单位： | 1. 中山大学化学与化学工程学院,广州,510275
2. 中山大学测试中心,广州,510275 |
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| 基金项目： | 国家海洋八六三 (No .81 9 0 4 0 3)资助项目 |
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| 摘 要： | 采用热重、热重-红外谱联用及差示扫描量热法，对鲍鱼多糖进行热分析研究 ，结果表明鲍鱼多糖在空气和氮气氛中，230 ～ 340 ℃之间发生剧烈的分解反应 。氮气氛中，是吸热的分解过程；而空气氛中，是放热氧化反应，并且在453 ℃左 右，有另一个急剧的氧化裂解过程。与淀粉、肝素、甲壳素和半乳糖的热分析比较 ，含有硫酸酯的鲍鱼多糖和肝素热稳定性较低，含氨基的甲壳素最高，这反映出不 同基团对多糖热稳定性的影响。
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| 关 键 词： | 鲍鱼 多糖 热重量分析 示差扫描量热法 热稳定性 |
| 修稿时间： | 2003-02-09 |
Study on the Thermal Decomposition of the Sulphated Polysaccharide Hal-A from Haliotis diverisicolor Reeve |
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| SHE,Zhi-Gang a HU,Gu-Ping a GUO,Zhi-Yong a LIN,Yong-Cheng,a LIN,Mu-Liang b. Study on the Thermal Decomposition of the Sulphated Polysaccharide Hal-A from Haliotis diverisicolor Reeve[J]. Chinese Journal of Organic Chemistry, 2003, 23(10): 1149-1151 |
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| Authors: | SHE Zhi-Gang a HU Gu-Ping a GUO Zhi-Yong a LIN Yong-Cheng a LIN Mu-Liang b |
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| Affiliation: | School of Chemistry and Chemical Engineering, Zhongshan University;Test Centre, Zhongshan University |
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| Abstract: | The thermal decomposition of the sulphated polysacchaiide Hal-A from Haliotis diverisicolor Reeve has been studied by using thermogravimetry (TG), thennogravimetry-infrai-ed (TG-IR), differential thermogravimetry (DTG) and differential scanning calorimetry (DSC) in air and N_2. The results indicate that Hal-A is rapidly degraded at 276 ℃ (air) and 281 ℃ (N_2), respectively. It is exothermic in the air atmosphere and endothermic in the N_2 atmosphere. Comparing with chitin and starch, the thermal stability of the sulphated polysaccharide Hal-A and heparin is lower. The results of TG- IR analysis demonstrate that Hal-A is decomposed into CO_2, H_2O, alcohols, oxo-compounds etc and remains mainly contain Na_2SO_4 and carbon. |
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| Keywords: | sulphated polysaccharide Haliotis diverisicolor Reeve TG TG-IR DTG DSC |
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