| PET/苯乙烯-丙烯酸钠离聚物的结晶及熔融行为 |
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| 引用本文： | 唐仕东,辛忠.PET/苯乙烯-丙烯酸钠离聚物的结晶及熔融行为[J].高分子材料科学与工程,2009(8). |
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| 作者姓名： | 唐仕东 辛忠 |
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| 作者单位： | 华东理工大学化学工程国家联合重点实验室; |
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| 摘 要： | 采用差示扫描量热仪(DSC)研究了离聚物苯乙烯-丙烯酸钠对聚对苯二甲酸乙二酯(PET)的结晶行为及熔融行为的影响。结果表明,苯乙烯-丙烯酸钠离聚物能够诱导PET异相成核,从而大幅度提高PET的熔融结晶温度和降低冷结晶温度,实现PET在高温区和低温区结晶速率的同时提高,并使PET在等温熔融结晶过程的Avrami指数n增加。同时,苯乙烯-丙烯酸钠的加入改变了PET的熔融行为,同等结晶温度下PET/苯乙烯-丙烯酸钠离聚物的多重熔融峰中的峰II温度值大于纯PET。
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| 关 键 词： | 聚对苯二甲酸乙二酯 苯乙烯-丙烯酸钠 结晶行为 熔融行为 |
Crystallization and Melting Behaviors of PET/Styrene-Sodium Acrylate Ionomer Composites |
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| TANG Shi-dong,XIN Zhong.Crystallization and Melting Behaviors of PET/Styrene-Sodium Acrylate Ionomer Composites[J].Polymer Materials Science & Engineering,2009(8). |
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| Authors: | TANG Shi-dong XIN Zhong |
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| Affiliation: | TANG Shi-dong,XIN Zhong(State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China) |
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| Abstract: | The effect of ionomer styrene-sodium acrylate(SAA-Na) on the crystallization and melting behaviors of polyethylene terephthalate(PET) was investigated by using differential scanning calorimetry(DSC).The results show that the ionomer SAA-Na can initiate heterogeneous nucleation of PET,therefore the addition of SAA-Na increases the melt-crystallization temperature and decreases the cold-crystallization temperature of PET remarkably,accelerating the crystallization rate of PET both at high temperature region a... |
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| Keywords: | PET styrene-sodium acrylate crystallization behavior melting behavior |
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