Effect of TEMPO/Sodium Nitrite on the Degumming of Hemp Fibers
To reduce energy consumption and green environmental protection during the degumming process of hemp two coarse fiber,while ensuring the quality of the obtained fibers meets the requirements,this paper explores the degumming effect of a TEMPO/sodium nitrite pretreatment experiment and proposes a new degumming strategy.The results show that the optimal condi-tions for the TEMPO/sodium nitrite system are as follows:TEMPO mass concentration of 0.35g/L,10mL of 1mol/L sodium nitrite,a bath ratio of 1∶30,pH value of 4.5,and treatment at 70℃ for 2 hours,resulting in the best fiber quality.
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