Fiber identification
Rapid Identification of milk protein fiber
1 Identification of combustion
Reference to national standards of FZ/Y01057.2-99
Near the flame: Melt and curly
Then into flame: Curly, melting, burning
Leave the flame: combustion, and sometimes eliminate
Burning smell: hair burning taste
Remnants of characteristics: Black-and basic crisp, but a trace amount lumps
From the above combustion characteristics, such as silk protein fiber
2 Identification of dissolved
Reference to national standards of FZ/Y01057.4-99
Milk fiber in 2.5% NaOH solution, 100 ℃ for 30 minutes after heating, can be a unique milk protein fiber dissolved phenomenon
Status: fiber swelling was rubbery freeze
Color changes: in the entire dissolution process, the fiber qualities of the color gradually changed from dark red and then fade from dark red to pale yellow
Analysis: If the flame extinguished when the hair was just burning taste and dissolution results with frozen gels and unique color reaction, the sample is milk protein fiber
Note: The above part of the experimental data from the pre-exit inspection and seizure Bureau, the Shanghai Institute of wool and linen fabrics and textile technology Donghua University Key Laboratory of the Ministry of Education, would also expressed gratitude
