| 曹翠玲,丁文丽,吕延延,王超,刘爱芹.TGA-FTIR与Py-GC/MS分析医用硅橡胶[J].橡胶科技,2017,15(2):48-52. |
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| TGA-FTIR与Py-GC/MS分析医用硅橡胶 |
| Analysis of Medical Silicone Rubber by TGA-FTIR and Py-GC/MS |
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| DOI： |
| 中文关键词: 医用硅橡胶 热重分析 红外光谱 裂解 气相色谱 质谱 |
| 英文关键词: medical silicone rubber thermogravimetric analysis infrared spectroscopy pyrolysis gas chromatography mass spectrometry |
| 基金项目: |
| 中图分类号:O657；TQ333. 93 |
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| 摘要点击次数: 939 |
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| 中文摘要: |
| 用热重分析（TGA）-傅里叶变换红外光谱（FTIR）联用和裂解（Py）-气相色谱（GC）/质谱（MS）联用对两个医用硅橡胶试样的热分解过程进行分析。研究表明：通过FTIR分析，推断两个医用硅橡胶试样的主要成分为甲基取代硅氧烷，其中一个试样的填料可能为硫酸钡和白炭黑，而另一个试样的填料可能仅为白炭黑；两个医用硅橡胶试样的裂解产物均为环状二甲基硅氧烷，主要成分为六甲基环三硅氧烷和八甲基环四硅氧烷；裂解温度越高，越易出现相对分子质量较大的环状二甲基硅氧烷。TGA-FTIR和Py-GC/MS分析可以为医用硅橡胶的鉴定和裂解回收提供依据。 |
| 英文摘要: |
| Two medical silicone rubber samples were analyzed by thermogravimetric analysis（TGA）-fourier transform infrared spectroscopy（FTIR）and pyrolysis（Py）-gas chromatography（GC）/mass spectrometry（MS）. It was concluded that the main components of the two samples were methyl substituted polysiloxane by FTIR analysis. The fillers in one of the samples were barium sulfate and silica，while the filler in another sample was only silica. The pyrolysis products from both samples were cyclomethicones，and these main components were hexamethyl cyclotrisiloxane and octamethyl cyclotetrasiloxane. When the cracking temperature increased，larger molecules of cyclomethicones were found. TGA-FTIR and Py-GC/MS could provide the basis for the identification and recovery of medical silicone rubber. |
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