Soybean Protein Fiber SPF Fiber

Resistance Properties to Alkali, Acid, Moth and Fungus

The resistance properties of soybean fiber, wool, silk and cotton were tested and compared, as illustrated in Table.15.

Table.15 Chemical properties of soybean fiber, wool, silk and cotton

Fiber Property	Wool	Soybean fiber	Silk	Cotton
Resistance to acid	Resistant to thin- acid (good)	Resistant to thin- acid (good)	Resistant to thin- acid (good)	Resistant to thin- acid, not resistant to hot thin-acid (relatively good)
Resistance to alkali	Resistant to thin-alkali (soda), not resistant to caustic soda.	Resistant to thin-alkali (soda), not resistant to caustic soda.	Resistant to thin-alkali (soda), not resistant to caustic soda.	Resistant to caustic soda.
Resistance to moth / fungus	Resistant to fungus, not resistant to moth	Resistant to moth and fungus	Resistant to fungus, not resistant to moth	Resistant to moth, not resistant to fungus

Table.15 indicates that the resistance properties to alkali and acid of soybean fiber are the same as those of wool and silk. The resistance to fungus of soybean fiber is also the same as that of wool and silk. And the resistance to moth of soybean fiber is better than that of silk, wool and cotton.