Analysis of Fluoropolymers by Infrared Spectroscopy
A technology of infrared spectroscopy and polymers, which is applied in the direction of material analysis, analysis materials, instruments, etc. through optical means, and can solve problems such as sample damage
Active Publication Date: 2021-08-27
DAIKIN IND LTD
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
However, since this method heats the sample, the sample may be damaged
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1～9
[0085] Device: Nicolet 6700 (manufactured by ThermoFisher Scientific) FT-IR
[0086] Angle of incidence: 45 degrees
[0087] Number of reflections: 1 time
[0088] Prism: Ge
Embodiment 10 and 11
[0090] Incident Angle Variable ATR Device: Angle Variable Reflector / ATR Seagull (manufactured by Harrik Scientiffic)
[0091] Number of reflections: 1 time
[0092] Prism: Ge
Synthetic example 1
[0094] Will C 8 f 17 CH 2 CH 2 OCOCH=CH 2 / C 10 f 21 CH 2 CH 2 OCOC (CH 3 )=CH 2 (Weight ratio 80 / 20) 30.0g and 81.0g of butyl acetate were stirred and dissolved in a four-necked flask, nitrogen substitution was carried out while maintaining at 65°C, and then 1.3g of organic peroxide was added and reacted at 65°C for 8 hours. A polymer solution is obtained. The conversion rate of the monomer obtained by gas chromatography is 95% or more. From the obtained polymerization solution, butyl acetate was removed by an evaporator to obtain a polymer. Synthesis example 2
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Abstract
The present invention discloses a method for analyzing articles containing a fluorine-containing surface treatment agent. In the analysis method, the infrared total reflection attenuation method (IR-ATR method) using a Fourier transform infrared spectrometer (FT-IR) is disclosed. Calculate the number of carbon atoms of the fluoroalkyl group contained in the fluorine-containing surface treatment agent, wherein the fluorine-containing surface treatment agent contains a fluorine-containing polymer as an active ingredient, and the fluorine-containing polymer has a formula derived from: CH 2 =C(-X)-C(=O)-Y-Z-Rf [In the formula, X is a hydrogen atom, a monovalent organic group or a halogen atom, Y is -O- or -NH-, and Z is a direct A bonded or divalent organic group, Rf is a fluoroalkyl group having 1 to 20 carbon atoms. ] is a repeating unit of a fluorine-containing monomer represented by ]. Provided is an analysis method for simply determining the number of carbon atoms in a fluoroalkyl group in an article containing a fluorine-containing surface treatment agent containing a fluorine-containing polymer as an active ingredient.
Description
technical field [0001] The present invention relates to an analysis method for determining the number of carbon atoms of a fluoroalkyl group contained in a fluorine-containing surface treatment agent containing a fluorine-containing polymer as an active ingredient by an infrared total reflection attenuation method (IR-ATR method). Background technique [0002] A method for measuring the surface segregation of fluorine-containing hydrocarbon chains in fluorine-containing organic compounds is proposed. [0003] Techniques for local analysis of samples by means of XPS or X-ray absorption using orbital synchrotron radiation are disclosed (for example, K Honda, M Morita, H Otsuka, A Takahara. Macromolecules 38(13), 5699-5705( 2005) and K. Honda, M. Morita, O. Sakata, S. Sasaki and A. Takahara, Macromolecules, 43(1), 454-460(2010).) [0004] However, there are restrictions on large-scale equipment and severe operating time, and there are great technical obstacles in analyzing the...
Claims
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IPC IPC(8): G01N21/3563G01N21/552
CPCD06M15/277D06M2101/32D06M2101/34G01N21/3563G01N21/552G01N21/8422G01N33/36G01N2021/3595G01N2021/8427
Inventor 高桥可奈子山本育男长谷川健下赤卓史
Owner DAIKIN IND LTD