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反式-1,4-聚异戊二烯的非等温结晶动力学

China Synthetic Rubber Industry(2012)

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Abstract
采用差示扫描量热法表征了反式-1,4-聚异戊二烯(TPI)的非等温结晶行为,分别采用Ozawa法、Jeziomy修正的Avrami方程法和Mo法研究了TPI的非等温结晶动力学。结果表明,随着降温速率的增加,TPI的结晶放热峰温向低温方向偏移,且结晶峰形变宽,半结晶时间逐渐缩短;Ozawa法和Jeziomy法均不能很好地描述TPI的非等温结晶过程,Mo法可以很好地描述TPI的非等温结晶过程;根据Kissinger方程求得TPI的结晶活化能为6.35 kJ/mol。
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Key words
4-polyisoprene,activation energy of crystallization,non-isothermal crystallization kinetics,trans-1
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