| 热裂解气质联用鉴别PA56、PA66和PA6 |
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| 引用本文： | 胡慧廉,施嘉亮,郎蕾,施超欧,姚建磊.热裂解气质联用鉴别PA56、PA66和PA6[J].中国塑料,2021,35(11):120-124. |
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| 作者姓名： | 胡慧廉 施嘉亮 郎蕾 施超欧 姚建磊 |
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| 作者单位： | 华东理工大学化学与分子工程学院分析测试中心，上海 200237 |
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| 摘 要： | 采用热裂解气质联用（Py-GC/MS）方法鉴别聚酰胺56（PA56）、聚酰胺66（PA66）和聚酰胺6（PA6）及其共混物。结果表明，在550 ℃裂解温度下，PA56与PA66相对丰度100 %的峰为环戊酮，分别具有特征裂解产物1，8-二氮杂环十三烷-2，7?二酮和1，8-二氮杂环十四烷-2，7-二酮，PA6相对丰度100 %的峰为己内酰胺；此方法可用于快速鉴别PA56、PA66和PA6的工业初级品，并成功检出了PA6/PA56共混物、PA6/PA66改性共混物与改性PA66。
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| 关 键 词： | 热裂解?气相色谱/质谱 聚酰胺56 聚酰胺66 聚酰胺6 鉴别 |
| 收稿时间： | 2021-05-10 |
Identification of PA56， PA66 and PA6 Through Pyrolysis Gas Chromatography?mass Spectrometry |
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| HU Huilian,SHI Jialiang,LANG Lei,SHI Chaoou,YAO Jianlei.Identification of PA56， PA66 and PA6 Through Pyrolysis Gas Chromatography?mass Spectrometry[J].China Plastics,2021,35(11):120-124. |
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| Authors: | HU Huilian SHI Jialiang LANG Lei SHI Chaoou YAO Jianlei |
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| Affiliation: | Analysis and Research Center，School of Chemistry and Molecular Engineering，East China University of Science and Technology，Shanghai 200237，China |
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| Abstract: | Pyrolysis gas chromatography-mass spectrometry （Py-GC/MS） was conducted to identify polyamide 56， polyamide 66， polyamide 6 and their blends. The 100 % relative abundances of polyamide 56 and polyamide 66 were cyclopentanone at a pyrolysis temperature of 550 ℃， which were differentiated with the characteristic pyrolytic products of 1，8?diazabicyclotridecane-2，7-dione and 1，8?diazabicyclotetradecane-2， 7-dione. Meanwhile， polyamide 6 obtained 100 % relative strength of caprolactam. This made it possible to quickly identify industrial primary products of polyamide 56， polyamide 66 and polyamide 6. With this method， polyamide 6/56 blends， modified polyamide 6/66 blends and modified polyamide 66 can be detected successfully. |
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| Keywords: | pyrolysis?gas chromatograph?mass spectrometry polyamide 56 polyamide 66 polyamide 6 identification |
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