Ultrafine porous fibers electrospun from cellulose triacetate

被引：88

作者：

Han, SO

Son, WK

Youk, JH

Lee, TS

Park, WH ^{[1
]}

机构：

[1] Chungnam Natl Univ, Dept Text Engn, Taejon 305764, South Korea

[2] Korea Inst Energy Res, Funct Mat Res Ctr, Taejon 305343, South Korea

[3] Chungnam Natl Univ, Res Inst Adv Mat, Taejon 305764, South Korea

[4] Inha Univ, Dept Text Engn, Inchon 402751, South Korea

来源：

MATERIALS LETTERS | 2005年 / 59卷 / 24-25期

关键词：

porous fibers; morphology; phase separation; solution properties;

D O I：

10.1016/j.matlet.2005.05.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ultrafine porous cellulose triacetate (CTA) fibers were prepared by electrospinning with methylene chloride (MC) and a mixed solvent of MC/ethanol (EtOH) and their intra- and inter-fiber pore structures was investigated. Ultrafine porous CTA fibers electrospun with MC had isolated circular shape pores with a narrow size distribution in the range of 50-100 nm. In the case of ultrafine CTA fibers electrospun with MC/EtOH (90/10 v/v), they had interconnected. larger pores in the range of 200-500 nm. These porous structures were induced by phase separation resulting from the rapid evaporation of solvent during the electrospirming process. However, non-porous corrugated fibers were obtained from MC/EtOH (85/15 v/v) and MC/EtOH (80/20 v/v) due to their lower vapor pressure. The pore sizes in ultrafine CTA fibers electrospun with MC showed a bimodal distribution centered at similar to 17 and similar to 64 nm. CTA fibers electrospun with MC/EtOH (90/10 v/v) showed the greatest porosity due to their larger intra-fiber pores and fiber diameter. (C) 2005 Elsevier.B.V All rights reserved.

引用

页码：2998 / 3001

页数：4

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