| 乙烯-辛烯共聚物/淀粉共混体系的非等温结晶动力学(英文) |
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| 引用本文： | 尚晓娅,扶雄,杨连生.乙烯-辛烯共聚物/淀粉共混体系的非等温结晶动力学(英文)[J].化学研究,2007,18(2):73-78. |
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| 作者姓名： | 尚晓娅 扶雄 杨连生 |
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| 作者单位： | 华南理工大学轻化工研究所,广东,广州,510641 |
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| 摘 要： | 通过差示扫描量热仪(DSC)研究了乙烯-辛烯共聚物/淀粉共混体系的非等温结晶动力学,用Jeziorny和Ozawa方程描述了结晶动力学过程.共混物的结晶温度和结晶焓强烈依赖于淀粉含量和冷却速率.结果表明,随着冷却速率的增加,每个试样的结晶放热曲线均变宽,并向低温区移动.当温度一定高时,所有试样均具有较快的结晶速率. Jeniorzy方程可以较好地描述POE/淀粉共混物的非等温结晶模式,而Ozawa方程对于POE/淀粉共混体系不太适合.
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| 关 键 词： | 乙烯-辛烯共聚物 非等温结晶动力学 淀粉 共混物 |
| 文章编号： | 1008-1011（2007）02-0073-06 |
| 修稿时间： | 2007-03-06 |
Non-isothermal Melt Crystallization Kinetics of Polyethylene-Octene Elastomer/Starch Blends |
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| SHANG Xiao-ya,FU Xiong,YANG Lian-sheng.Non-isothermal Melt Crystallization Kinetics of Polyethylene-Octene Elastomer/Starch Blends[J].Chemical Research,2007,18(2):73-78. |
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| Authors: | SHANG Xiao-ya FU Xiong YANG Lian-sheng |
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| Institution: | Research Institute of Light Chemical Engineering, South China University of Technology, Guangzhou 510641, G uangdong, China |
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| Abstract: | Non-isothermal melt crystallization kinetics of polyethylene-octene elastomer(POE)/starch blends has been investigated by differential scanning calorimeter(DSC). The Jeziorny and Ozawa equations were applied to describe the kinetics of the crystallization process. The crystallization temperature and crystallization enthalpy strongly depended on the starch content and cooling rate. For each type of sample investigated, the crystallization exotherm became wider and shifted towards lower temperature range with increasing cooling rate. All of the blends investigated were found to have fast crystallization rate at higher temperature. Jeniorzy equation is more suitable to describe the crystallization model under the non-isothermal crystallization of POE/starch blends, and Ozawa model can not fit POE/starch blend system well. |
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| Keywords: | polyethylene-octene elastomer non-isothermal melt crystallization kinetics starch blends |
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