| 聚氧化乙烯等温结晶过程的计算机模拟 |
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| 引用本文： | 孙辉,张志英,董知之,于斌,王曙光,肖长发. 聚氧化乙烯等温结晶过程的计算机模拟[J]. 高分子材料科学与工程, 2007, 23(3): 186-189 |
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| 作者姓名： | 孙辉 张志英 董知之 于斌 王曙光 肖长发 |
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| 作者单位： | 天津工业大学材料科学与化学工程学院,改性与功能纤维重点实验室,天津,300160 |
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| 基金项目： | 天津市教委资助项目 , 天津市重点实验室天津市科技发展计划项目 , 天津工业大学重中之重人才配套项目 |
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| 摘 要： | 用Monte Carlo方法模拟了聚氧化乙烯(PEO)在预先成核条件下的等温结晶过程,并用Avrami方程进行了结晶动力学处理.结果显示,Avrami方程能够成功地描述被模拟的PEO等温结晶的初期过程.随着结晶温度的升高,结晶速率和球晶的线生长速率减小,而Avrami指数值基本不变,都接近于3.采用热台偏光显微镜(HSPOM)实验证实了模拟实验模型和结果的正确性.
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| 关 键 词： | 聚氧化乙烯 Monte Carlo方法 Avrami方程 等温结晶 |
| 文章编号： | 1000-7555（2007）03-0186-04 |
| 修稿时间： | 2006-01-24 |
Computer Simulation of Poly(Ethylene Oxide) Isothermal Crystallization |
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| SUN Hui,ZHANG Zhi-ying,DONG Zhi-zhi,YU Bin,WANG Shu-guang,XIAO Chang-fa. Computer Simulation of Poly(Ethylene Oxide) Isothermal Crystallization[J]. Polymer Materials Science & Engineering, 2007, 23(3): 186-189 |
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| Authors: | SUN Hui ZHANG Zhi-ying DONG Zhi-zhi YU Bin WANG Shu-guang XIAO Chang-fa |
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| Affiliation: | School of Materials Science and Chemical Engineering, Key Lab. of Modification and Functional Fibers, Tianjin Polytechnic University, Tianjin 300160, China |
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| Abstract: | Isothermal crystallization of poly(ethylene oxide)(PEO) under predetermined nucleation condition was simulated by use of Monte Carlo method and treated by the Avrami equation.The results show that the Avrami equation is able to successfully describe the simulated isothermal crystallization process of PEO.With the increase of crystallization temperature,the crystallization rate and the linear growth rate of spherulites decrease,while the Avrami exponent,approaching 3,almost remains unchanged.Further,the hot stage of polarized optical microscopy(HSPOM) was employed to confirm the validity of the established simulation model and the conclusions from simulation experiment. |
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| Keywords: | poly(ethylene oxide) Monte Carlo method Avrami equation isothermal crystallization |
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