| 半芳香共聚酰胺的合成及热稳定性的研究 |
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| 引用本文： | 程晓敏,汪乐春,吴珊珊. 半芳香共聚酰胺的合成及热稳定性的研究[J]. 化学学报, 2009, 67(9): 983-988 |
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| 作者姓名： | 程晓敏 汪乐春 吴珊珊 |
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| 作者单位： | 安徽大学化学化工学院,合肥,230039;安徽大学化学化工学院,合肥,230039;安徽大学化学化工学院,合肥,230039 |
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| 基金项目： | 安徽省高等学校自然科学基金,安徽省绿色高分子重点实验室资助项目 |
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| 摘 要： | 采用熔融缩聚法, 合成了长碳链聚酰胺(PA1212)与聚对苯二甲酰十二碳二胺(PA12T)的新型半芳香共聚酰胺, 用FTIR, 1H NMR和DSC对产物结构进行了表征. 通过热重分析研究了共聚酰胺在N2气氛中以不同升温速率β升温时的热降解过程与机理. 结果表明PA1212/12T的降解为一步过程, 随着β的增大, 平衡降解温度线性升高. 用Kissinger和Flynn-Wall-Ozawa两种方法求得PA1212/12T的热降解表观活化能分别为126.9和127.9 kJ/mol. 用Coats-Redfern法证明了PA1212/12T的热降解机理为Deceleration类型中的R1或F3降解机理.
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| 关 键 词： | 聚酰胺1212 聚对苯二甲酰十二碳二胺 活化能 热降解机理 |
| 收稿时间： | 2009-01-12 |
| 修稿时间： | 2009-03-02 |
Semi-aromatic Copolyamide: Synthesis and Thermal Stability |
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| Cheng,Xiaomin,Wang,Lechun,Wu,Shanshan. Semi-aromatic Copolyamide: Synthesis and Thermal Stability[J]. Acta Chimica Sinica, 2009, 67(9): 983-988 |
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| Authors: | Cheng Xiaomin Wang Lechun Wu Shanshan |
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| Affiliation: | (College of Chemistry and Chemical Engineering, Anhui University, Hefei 230039) |
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| Abstract: | Poly(dodecamethylene dodecanamide/dodecamethylene terephthalamide) copolymer, a new semi-aromatic copolyamide PA1212/12T, was synthesized by melting copolycondensation. The structures of products were characterized by FTIR, 1H NMR and DSC. The decomposition processes and mechanism of PA1212/12T in Nitrogen has been studied by thermogravimetry. It was found that the thermal degradation process of PA1212/12T was one-step reaction. The degradation temperature increased linearly with the increasing of the heati... |
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| Keywords: | polyamide 1212 poly(dodecamethylene terephthalamide) activation energy decomposition reaction mechanism |
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