Preparation of Biopolymer Fibers by Electrospinning from Room Temperature Ionic Liquids

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• 作者：Gunaranjan Viswanathan ; Saravanababu Murugesan ; Victor Pushparaj ; Omkaram Nalamasu ; Pulickel M. Ajayan ; and Robert J. Linhardt
• 刊名：Biomacromolecules
• 出版年：2006
• 出版时间：February 2006
• 年：2006
• 卷：7
• 期：2
• 页码：415 - 418
• 全文大小：190K
• 年卷期：v.7,no.2(February 2006)
• ISSN：1526-4602

文摘

Electrospinning is a versatile process used to prepare micro- and nano- sized fibers from various polymers dissolvedin volatile solvents. In this report, cellulose and cellulose-heparin composite fibers are prepared from nonvolatileroom temperature ionic liquid (RTIL) solvents by electrospinning. RTILs are extracted from the biopolymer fiberafter the fiber formation using a cosolvent. Micron to nanometer sized, branched fibers were obtained from 10%(w/w) concentration of polysaccharide biopolymer in RTIL solution with an applied voltage of 15-20 kV.Cellulose-heparin composite fibers showed anticoagulant activity, demonstrating that the bioactivity of heparinremained unaffected even on exposure to a high voltage involved in electrospinning.