Manipulation of Native Cellulose Eletrospinning from LiCl-DMAc System
2019/11/27 21:22:59
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Cellulose nanofibers have been successfully fabricated by electrospinning of cellulose/lithium chloride. dimethylacetamide(LiCl-DMAc) solutions manipulated by nonsolvents. DMAc and dimethyl formamide(DMF) are used as the nonsolvents which is added into the concentrated cellulose solution. The effects of nonsolvents on the properties of cellulose solution and the morphology of electrospun cellulose nanofibers were investigated. Addition of nonsolvents is beneficial to increase the electrospinnable concentration of cellulose solution and obtain well. distributed nanofibers. The result of manipulating by DMF is better than DMAc. The improvement in electrospinnable concentration correlates well with the addition of nonsolvents which can decrease the viscosity of cellulose solution. The morphology of electrospun cellulose nanofibers is related to the rate of jet coagulation which is affected by the stability of cellulose solution during electrospinning.

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