Fibers of Textile Materials (V): Identification of Fibers III - Clothing Manufacturer

Fibers of Textile Materials (5): Identification of Fibers 3

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IV. Chemical dissolution method
The chemical dissolution method identifies fibers based on the differences in their dissolving properties in different solvents. It is suitable for a variety of fabric materials, including colored fibers or mixed fibers, yarns and fabrics. The dissolving properties of common solvents and fibers are shown in the table below:

Solvent
Fiber Type

36%~38% hydrochloric acid

15% hydrochloric acid

70% sulfuric acid

5% sodium hydroxide

85% formic acid

99% glacial acetic acid

M—Cresol

99%N-dimethylamide

Xylene or meta-xylene

Normal temperature

boil

Normal temperature

boil

Normal temperature

boil

Normal temperature

boil

Normal temperature

boil

Normal temperature

boil

Normal temperature

boil

Normal temperature

boil

Normal temperature

boil

Cotton

Wool

Silk

Ethylene

—

Spandex

Chlorine

Note S0—dissolve immediately; S—melt; P—partially dissolve; I—insolubilize. Dissolution time: 5 minutes at room temperature and 3 minutes after boiling.

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AAAss=”xl65″>I S S I I I S0 I S P S I S0 I I Chlorine I I I I I I I I I I I I P S0 S0 I I

Note S0—dissolve immediately; S—melt; P—partially dissolve; I—insolubilize. Dissolution time: 5 minutes at room temperature and 3 minutes after boiling.

Disclaimer:

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Note S0—dissolve immediately; S—melt; P—partially dissolve; I—insolubilize. Dissolution time: 5 minutes at room temperature and 3 minutes after boiling.