| 三醋酸纤维素的结构与性能研究 |
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| 引用本文： | 王文俊,李胤,门爽,邵自强.三醋酸纤维素的结构与性能研究[J].材料工程,2007(8):49-52. |
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| 作者姓名： | 王文俊 李胤 门爽 邵自强 |
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| 作者单位： | 北京理工大学,材料科学与工程学院,北京,100081 |
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| 摘 要： | 采用乙酸酐/乙酸/硫酸体系制备了三醋酸纤维素(CTA),运用IR,化学滴定,1H-NMR,X射线衍射,DSC等手段对产物的结构及性质进行了表征和测试.结果表明,所合成的CTA结合醋酸质量分数均达到60%以上.与纤维素相比,CTA的晶型发生了明显变化,结晶度也降低到30%左右.同时,所制备的CTA的DSC谱图中都出现了明显而完整的熔融峰.
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| 关 键 词： | 三醋酸纤维素 乙酰基 取代度分布 三醋酸纤维素 结构与性能 研究 Cellulose Properties 熔融 谱图 结晶度 变化 发生 晶型 质量分数 结合 合成 结果 测试 表征 性质 手段 射线衍射 |
| 文章编号： | 1001-4381（2007）08-0049-04 |
| 修稿时间： | 2006-05-302007-01-23 |
Structure and Properties of Cellulose Triacetate |
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| WANG Wen-jun,LI Yin,MEN Shuang,SHAO Zi-qiang.Structure and Properties of Cellulose Triacetate[J].Journal of Materials Engineering,2007(8):49-52. |
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| Authors: | WANG Wen-jun LI Yin MEN Shuang SHAO Zi-qiang |
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| Affiliation: | School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | Cellulose triacetate(CTA)was prepared in the presence of mixture of acetic anhydride/acetic acid/H2SO4.The structure and properties of cellulose triacetate acetylation were determined by IR,1H-NMR,XRD,DSC and chemical analysis.The results showed that acetyl mass fraction of all CTA samples were at least 60%,the most active reaction position on the anhydroglulose unit was C-6.Compared with that of cellulose,the crystallinity of CTA was much lower,but the processability was improved a lot. |
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| Keywords: | cellulose triacetate acetyl degree of substitution distribution |
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