在303~393 K 温度范围内，采用变温傅里叶变换衰减全反射红外光谱技术(ATR-FTIR)研究了二甲基硅油的一维红外光谱、二阶导数红外光谱、四阶导数红外光谱和去卷积红外光谱。实验发现，在1800~600 cm-1范围内，二甲基硅油主要存在 CH 3伸缩振动模式(νCH3)、CH 3变形振动模式(δCH3)、CH 3摇摆振动模式(ρCH3)、Si-O伸缩振动模式(νSi-O )和 Si-C 伸缩振动式(νSi-C )等5种红外吸收模式，其中782 cm-1和789 cm-1处的红外吸收峰归属于二甲基硅油νSi-C 。以二甲基硅油νSi-C 为研究对象，进一步开展相关二维红外光谱的研究。结果发现，随着测定温度的升高，二甲基硅油νSi-C 红外吸收强度的变化快慢顺序为：789 cm-1>782 cm-1。本项研究拓展了 ATR-FTIR 技术在二甲基硅油热变性方面的研究范围。
The silicone oil molecular structure was studied by one-dimensional infrared spectroscopy,second de-rivative infrared spectroscopy,fourth derivative infrared spectroscopy and deconvolution infrared spectroscopy with fourier transform attenuated total reflection infrared spectroscopy (ATR-FTIR)in the temperature range from 303 K to 393 K.The CH 3 stretch vibration mode (νCH3 ),the CH 3 bending vibration mode (δCH3 ),the CH 3 swing vibration mode (ρCH3 ),the Si-O stretch vibration mode (νSi-O )and the Si-C stretch vibration mode (νSi-C )were found from 1800 cm-1 to 600 cm-1 .TheνSi-C occurred respectively near 782 cm-1 and 789 cm-1 .Two-dimensional infrared spectra of silicone oil was studied to determine the sequence of intensity changes.It had been found that the sequence of intensity changes was 789 cm-1 >782 cm-1 with the increase of temperature.The study demonstrated the key roles of ATR-FTIR in the analysis of thermal denaturation of the silicone oil.
参考文献
| [1] | Ignacio Martínez-Montero;Sonia Brun?a;Ana Ma Gonza?lez-Vadillo;Isabel Cuadrado.Thiol?Ene Chemistry of Vinylferrocene: A Simple and Versatile Access Route to Novel Electroactive Sulfur- and Ferrocene- Containing Model Compounds and Polysiloxanes[J].Macromolecules,20144(4):1301-1315. |
| [2] | Ding Wang;Zongbo Zhang;Yongming Li.Highly Transparent and Durable Superhydrophobic Hybrid Nanoporous Coatings Fabricated from Polysiloxane[J].ACS applied materials & interfaces,201413(13):10014-10021. |
| [3] | Ioannis Karapanagiotis;Panagiotis N. Manoudis;Andreea Zurba;Dimitrios Lampakis.From Hydrophobic to Superhydrophobic and Superhydrophilic Siloxanes by Thermal Treatment[J].Langmuir: The ACS Journal of Surfaces and Colloids,201444(44):13235-13243. |
| [4] | Ohtake, Toshihiro;Tanaka, Hideki;Matsumoto, Tetsuro;Ohta, Akira;Kimura, Mutsumi.Deformation of Redox-Active Polymer Gel Based on Polysiloxane Backbone and Bis(benzodithiolyl)bithienyl Scaffold[J].Langmuir: The ACS Journal of Surfaces and Colloids,201448(48):14680-14685. |
| [5] | 程青民;罗世凯;丁国芳.硅橡胶/丁基橡胶共混体系的相容性研究[J].化工新型材料,2010(7):109-111. |
| [6] | U Hyeok Choi;Siwei Liang;Michael V. O'Reilly;Karen I. Winey;James Runt;Ralph H. Colby.Influence of Solvating Plasticizer on Ion Conduction of Polysiloxane Single-Ion Conductors[J].Macromolecules,20149(9):3145-3153. |
| [7] | Hongrui Zhang;Guozheng Liang;Aijuan Gu.Facile Preparation of Hyperbranched Polysiloxane-Grafted Aramid Fibers with Simultaneously Improved UV Resistance, Surface Activity, and Thermal and Mechanical Properties[J].Industrial & Engineering Chemistry Research,20147(7):2684-2696. |
| [8] | 王继虎;徐善中;唐志君;顾维栋;唐忠锋.粉煤灰/硅橡胶复合材料的性能研究[J].高分子通报,2013(3):78-82. |
| [9] | 段书德;周冉;李杰辉;吕立强;顾丹丹;于宏伟.聚乙烯C-H伸缩振动二维红外光谱研究[J].塑料科技,2014(12):45-48. |
| [10] | Hiroaki Maekawa;Gema Ballano;Claudio Toniolo.Linear and Two-Dimensional Infrared Spectroscopic Study of the Amide I and II Modes in Fully Extended Peptide Chains[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,201118(18):5168-5182. |
| [11] | Hiroaki Maekawa;Nien-Hui Ge.Comparative Study of Electrostatic Models for the Amide-I and -II Modes: Linear and Two-Dimensional Infrared Spectra[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,20103(3):1434-1446. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%