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.
Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.
Official URL: http://www.sciencedirect.com/science/article/B6TX9...
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.
|Uncontrolled Keywords:||Electrospinning; Poly(l-lactic acid); Phase diagrams; Porosity|
|Subjects:||Material Science > Nanostructured materials|
|Deposited On:||10 Feb 2010 15:04|
|Last Modified:||10 Feb 2010 15:04|
Repository Staff Only: item control page