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Ultrafine Cellulose Triacetate Mats Electrospun by Using Co-solvent of DMSO/Chloroform System

机译:DMSO /氯仿体系共溶剂超细纤维素三乙酸酯电纺

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摘要

Cellulose triacetate (CTA) nanofiber nonwoven mats were continuously electrospun by using mixed solvent of DMSO/chloroform system. The size and morphology of CTA nanofibers were investigated. It was found that CTA fibers with diameters in the range of 98 nm-1.81 μm were obtained from 8 wt % CTA solutions in 1: 1, 3: 2, 2: 1, 3: 1, 5: 1 and 7: 1 (v/v) DMSO/chloroform. The average diameter of CTA nanofiber was decreased and size distribution was narrowed with increasing the DMSO content in the mixed solvent. Smooth and uniform nanofibers with mean diameters of about 260 nm could be obtained from a solution of CTA in the binary system DMSO/chloroform 5: 1(v/v) at a polymer concentration of 8 wt %.
机译:通过使用DMSO /氯仿体系的混合溶剂,对纤维素三乙酸酯(CTA)纳米纤维非织造垫进行连续电纺。研究了CTA纳米纤维的尺寸和形态。已发现直径为98 nm-1.81μm的CTA纤维是从8 wt%的CTA溶液中以1:1、3:2:2:1、3:1、5:1和7:1( v / v)DMSO /氯仿。随着混合溶剂中DMSO含量的增加,CTA纳米纤维的平均直径减小,尺寸分布变窄。可以从二元体系DMSO /氯仿5:1(v / v)中的CTA溶液中,以8 wt%的聚合物浓度获得平均直径约为260 nm的光滑均匀的纳米纤维。

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