This part specifies a method for identifying textile fibers using infrared absorption spectrum.
This method is applicable to the identification of textile fibers.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
FZ/T 01057.1 Test method for identification of textile fibers—Part 1: General introduction
3 Principle
When the sample is irradiated by a beam of infrared light, the molecules of the sample will absorb part of the light energy and convert it into the vibrational energy and rotational energy of the molecule. The infrared absorption spectrum of the sample can be obtained by drawing the absorption value with the corresponding wave number by means of an instrument. Each characteristic absorption band in the infrared spectrum contains information of groups and chemical bonds in the sample molecule. Different materials have different infrared absorption spectrum, and the infrared absorption spectrum of the sample is compared with a known infrared absorption spectrum to identify the fiber.
4 Reagents
4.1 Acetone, analytical reagent.
4.2 Dichloromethane, analytical reagent.
4.3 Formic acid, analytical reagent.
4.4 Potassium bromide powder, analytical reagent.
4.5 Potassium bromide single wafer, KRS-5 single wafer.
5 Instruments and tools
5.1 Infrared spectrometer, with wavenumber range of 4 000 cm-1~400 cm-1.
5.2 10 t~15 t small hydraulic press and potassium bromide stamper.
