Abstract: The composition of denaturant MDF for viscose fiber were analyzed using column chromatography.Its main chemical components were identified as polyethylene glycol,fatty alcohol polyoxyethylene ether and aliphatic amine polyoxyethylene ether.Then a self-made denaturant for viscose fiber was prepared,and its physical indices were measured and analyzed.Results showed that its wetting power achieves 5.185 s,its surface tension achieves 27.61 mN/m and its volatilization loss is 0.004.The self-made denaturant was applied in the production of viscose fiber,and the viscose fiber produced shows good properties.Its dry and wet fracture strength achieves 3.59 and 2.18 cN/dtex respectively,dry and wet elongation at fracture achieves 14.10% and 14.33% respectively.The fiber wet modulus (×20) achieves 14.60 cN/dtex.

Key words: denaturant, viscose fiber, composition, application, performance