| PA6/PA6IcoT相容共混物的结晶行为 |
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| 引用本文： | 周光大,姚臻,曹堃,李伯耿. PA6/PA6IcoT相容共混物的结晶行为[J]. 高分子材料科学与工程, 2009, 0(9) |
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| 作者姓名： | 周光大 姚臻 曹堃 李伯耿 |
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| 作者单位： | 化学工程国家重点实验室(浙江大学);浙江大学材料与化工学院高分子工程研究所; |
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| 基金项目： | 国家自然科学基金重大项目(50390097) |
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| 摘 要： | 采用差示扫描量热法研究了熔融共混聚己内酰胺/聚对(间)苯二甲酸己二胺(PA6/PA6IcoT)相容体系的结晶温度、结晶程度以及结晶动力学,并通过热台偏光显微镜、广角X射线衍射仪观察了PA6/PA6IcoT共混体系的结晶相形态和晶体结构。结果表明,共混物的结晶行为与其组成、结晶温度区域密切相关。在非等温结晶时,随着非晶态PA6IcoT含量的增加,PA6相的相对结晶度增加,部分晶体结构由γ晶型转变为较完善的α晶型。在较高温度区域结晶时,少量的PA6IcoT就能使串并的晶核分开,形成大量微小晶粒。当PA6IcoT含量继续增加时,球晶数目会减少但尺寸增大。等温结晶动力学研究发现,结晶速度随PA6IcoT含量的提高而下降,Avrami指数值在4.5～6之间,并随着结晶温度升高而增大。
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| 关 键 词： | 聚己内酰胺 聚对(间)苯二甲酸己二胺 相容共混 结晶 |
Crystallization Behavior of Miscible PA6 and PA6IcoT Blends |
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| ZHOU Guang-da,YAO Zhen,CAO Kun,LI Bo-geng. Crystallization Behavior of Miscible PA6 and PA6IcoT Blends[J]. Polymer Materials Science & Engineering, 2009, 0(9) |
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| Authors: | ZHOU Guang-da YAO Zhen CAO Kun LI Bo-geng |
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| Affiliation: | ZHOU Guang-da,YAO Zhen,CAO Kun,LI Bo-geng(State Key laboratory of Chemical Engineering (Zhejiang University),Institute of Polymerization and Polymer Engineering,College of Materials Science and Chemical Engineering,Zhejiang University,Hangzhou 310027,China) |
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| Abstract: | Crystallization behavior of melting blends between semi-crystalline aliphatic polyamide (PA6) and amorphous semi-aromatic polyamide (PA6IcoT) was studied. Differential scanning calorimetry (DSC) was used to investigate crystallinity,crystallization temperature and the crystallization kinetics. Polarized light microscopy (POM) with on-line hot stage was utilized to observe crystallization phase behavior,while wide-angle X-ray diffraction (WAXD) was applied to identify the structure of resultant crystals. It ... |
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| Keywords: | PA6 PA6IcoT miscible blend crystallization |
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