Fibers close to the flame when the fiber melting shrinkage; fibers melt when exposed to flame, ferrous lactate; leaving the fibers melt combustion flame, melt whereabouts; fiber combustion has a touch of special sweetness; residues in light gray gum. Burning test method according to the polylactic acid fiber with characteristics more similar to synthetic, no special characterization of the phenomenon.
Polylactic acid fiber as compared with the ordinary fibers, the identification of the fibers resembles many features, the microscope test method, the transverse cross-section and potassium lactate section confusing features and synthetic, can be clearly separately.
In the burning test method, the combustion performance and the condition also has similarities with synthetic fibers, the difference is lighter in color residues, but this phenomenon is not very clear representation, not alone confirm whether this method is a polylactic acid fiber .
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