| 乙酰化淀粉的塑化和性能研究 |
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| 引用本文： | 姜闻博,乔秀颖,唐忠柱,孙康.乙酰化淀粉的塑化和性能研究[J].高分子学报,2006(1):97-101. |
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| 作者姓名： | 姜闻博 乔秀颖 唐忠柱 孙康 |
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| 作者单位： | 上海交通大学金属基复合材料国家重点实验室,上海,200030 |
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| 摘 要： | 以乙酰化改性淀粉为基体,甘油为增塑剂,利用哈克旋转流变仪密炼制备热塑性乙酰化淀粉.实验结果表明制备热塑性乙酰化淀粉的甘油/乙酰化淀粉配比应大于30/100(W/W),且随甘油含量增加,热塑性乙酰化淀粉的脆性降低.动态机械热分析(DMTA)显示热塑性乙酰化淀粉包含富甘油和富淀粉两相,乙酰化淀粉和甘油为部分互溶.流变学分析显示淀粉分子间作用力非常强,表现为类固态行为.同时本文对材料的热稳定性进行了初步研究.
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| 关 键 词： | 热塑性 乙酰化淀粉 DMTA 流变性能 |
| 收稿时间： | 2004-08-31 |
| 修稿时间： | 2004-08-312004-11-10 |
PREPARATION AND PROPERTIES OF THERMOPLASTIC ACETYLATED STARCH |
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| JIANG Wenbo,QIAO Xiuying,TANG Zhongzhu,SUN Kang.PREPARATION AND PROPERTIES OF THERMOPLASTIC ACETYLATED STARCH[J].Acta Polymerica Sinica,2006(1):97-101. |
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| Authors: | JIANG Wenbo QIAO Xiuying TANG Zhongzhu SUN Kang |
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| Institution: | State Key Laboratory of Metal Matrix Composites, Shanghai Jiaotong University, Shanghai 200030 |
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| Abstract: | Thermoplastic acetylated starch(TPAS) was prepared with acetylated starch as matrix and glycerol as plasticizer by Haake Rheomix.Experimental results showed that the weight ratio of glycerol/acetylated starch should exceed 30/100 for obtaining TPAS,and the brittleness of TPAS decreased with increasing glycerol content.Dynamic mechanical thermal analysis(DMTA) indicated that acetylated starch and glycerol were partially miscible with separated acetylated-starch-rich phase and glycerol-rich phase.The rheological properties of TPAS exhibited solid-like behavior,indicating the strong interaction among the acetylated starch molecules.In addition,the thermal stability of TPAS was also investigated in this paper. |
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| Keywords: | Acetylated starch Glycerol Thermoplastic starch |
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