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Whether in textile production or trade, the identification and quantification of textile fibers are often the first concern. Textiles are products made from all kinds of textile fibers through spinning, weaving, dyeing and finishing and other processes. The raw materials of textiles determine the appearance characteristics and basic properties of their fabrics. It is important to properly choose the raw materials of textiles to improve the wearability and maintenance of textiles. The raw materials of textiles determine the fullness, gloss and softness of the fabric. Therefore, in order to prevent fraud in trade, what raw materials are used and what is the input ratio of raw materials are often important parameters of the organization's production, it is necessary to list these parameters in products.
Why to identify fiber
Products tested by Alfa Chemistry include, but are not limited to
Alfa Chemistry can provide you with qualitative and quantitative analysis of common animal and plant fibers, chemical fibers, animal hair and other materials, such as cotton, linen, polyester, acrylic, wool, camel down, duck down, etc. For more information, please call for consultation.
Alfa Chemistry's testing items
Testing Fiber Strength and Durability
Testing Fiber Authenticity
Testing Fiber for Restricted Substances
Testing Fabric for Defect
The identification methods of fabric fibers usually include microscope observation method, combustion method, reagent chromogenic method, dyeing method, chemical dissolution method and so on.
Microscope observation method
Make longitudinal slices and cross-section slices of the fiber, observe the longitudinal and transverse morphology of the fiber under a microscope, and identify the fiber based on the difference in morphological characteristics.
The flame, smoke, smell and residue of different fibers will be different in the process of combustion, so the types of fibers can be distinguished according to the characteristics of fibers during and after combustion.
Reagent chromogenic method
Due to the different structure of all kinds of fibers and different coloring reactions to iodine and potassium iodide solutions, the fibers can be identified by observing the color and swelling of the fibers after the action of reagents. This identification is only applicable to white fibers, and colored fibers can only be tested after fading.
To distinguish fibers by dyeing is mainly to distinguish them by different reactions of different fibers to dye. There are two dyeing methods: cold dyeing and boiling dyeing.
The dissolution method is the most effective method to identify all kinds of fibers. The principle is to determine the varieties of various fibers by using the dissolution characteristics of various fibers in different chemical solvents and at different temperatures.