Nano Archive

Highly porous fibers prepared by electrospinning a ternary system of nonsolvent/solvent/poly(l-lactic acid)

Qi, Zhonghua and Yu, Hao and Chen, Yanmo and Zhu, Meifang (2009) Highly porous fibers prepared by electrospinning a ternary system of nonsolvent/solvent/poly(l-lactic acid). Materials Letters, 63 (3-4). 415 - 418.

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Official URL: http://www.sciencedirect.com/science/article/B6TX9...

Abstract

In this work, a facile method for fabricating fibers with micro- and nano-porous structure by electrospinning a ternary system of nonsolvent/solvent/poly(l-lactic acid) is presented. Poly(l-lactic acid) (PLLA) was dissolved in a mixture of dichloromethane (solvent) and butanol (nonsolvent) with a certain ratio. During the electrospinning, the evaporation of solvent and nonsolvent would take the composition of polymer fluid jet to enter the two phase region of the ternary phase diagram, since the solvent is more volatile than the nonsolvent. Thus the jet yielded to different phase separated structures, and further evaporation of the residual nonsolvent would lead to porous fibers.

Item Type:Article
Uncontrolled Keywords:Electrospinning; Poly(l-lactic acid); Phase diagrams; Porosity
Subjects:Material Science > Nanostructured materials
ID Code:6611
Deposited By:SPI
Deposited On:10 Feb 2010 15:04
Last Modified:10 Feb 2010 15:04

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