| 草酸淀粉酯制备及其性能研究 |
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| 引用本文： | 张水洞,张翔,唐勇,黄汉雄,颜斌玉.草酸淀粉酯制备及其性能研究[J].化学研究与应用,2009,21(4). |
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| 作者姓名： | 张水洞 张翔 唐勇 黄汉雄 颜斌玉 |
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| 作者单位： | 1. 华南理工大学机械与汽车工程学院聚合物微成型流变实验室,广东,广州,510641
2. 公安部四川消防研究所,四川,都江偃,611830 |
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| 摘 要： | 本文以草酸和玉米淀粉为原料,通过改变原料的摩尔比反应制备了不同取代度(0.1到0.9)的草酸淀粉酯,采用滴定法测定产物的取代度,利用红外光谱和核磁共振表征产物(取代度为0.41)的化学结构,产物中含有羰基的结果表明成功制备了草酸淀粉酯.详细考察了草酸淀粉酯的物理化学性质,利用粘度测定、热重分析、广角X衍射(WXRD)以及湿度吸收等研究不同取代度的草酸淀粉酯的分子量、热稳定性,结晶形态以及吸水性能.结果说明,与玉米淀粉相比,草酸淀粉酯的吸水率随着取代度的提高而增加,其分子量、热稳定性以及结晶性能则呈下降趋势.
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| 关 键 词： | 草酸 草酸淀粉酯 制备 性能 |
Preparation and properties of oxalate starch |
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| ZHANG Shui-Dong,ZHANG Xiang,TANG Yong,HUANG Han-Xiong,YAN Bin-Yu.Preparation and properties of oxalate starch[J].Chemical Research and Application,2009,21(4). |
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| Authors: | ZHANG Shui-Dong ZHANG Xiang TANG Yong HUANG Han-Xiong YAN Bin-Yu |
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| Affiliation: | 1.Lab for Micro Molding and Polymer Rheology;College of Mechanical and Automotive Engineering;South China University of Technology;Guangdong;Guangzhou 510640;China;2.Sichuan Fire Research Institute of Ministryof Public Security;Sichuan;Dujiangyan 611830;China |
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| Abstract: | Oxalic acid,was used to esterify corn starch under nonaqueous conditions to give a material with degrees of substitution(DS)ranging from 0.1 to 0.9 depending on the oxalic acid/starch molar ratios used.The DS value was determined by titration,the reaction product(DS=0.41)was characterized by using spectroscopic techniques(FT-IR and13C-NMR).The results from these analyses revealed the presence of C=O groups,indicating that the esterification reaction was successful.The effect of different DS on phycial-co-ch... |
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| Keywords: | oxalic acid oxalate starch preparation properties |
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