Coaxial Electrospinning of Miscible PLLA-Core and PDLLA-Shell Solutions and Indirect Visualisation of the Core-Shell Fibres Obtained
Research and development
Authors:
- Kriel Haydn
Department of Chemistry and Polymer Science, Stellenbosch University, Matieland, South Africa - Sanderson Ronald D.
Instituto de Investigación Textil de Terrassa (INTEXTER), Universidad Politécnica de Cataluńa, Terrassa, Spain - Smit Eugene
Division of Ergonomics and Aerosol Technology, Department of Design Sciences, Faculty of Engineering, Lund University, Lund, Sweden
 Full text | Abstract: Core-shell fibres of semi-crystalline poly(L-lactic acid) (PLLA) (core) and amorphous poly(D,L-lactic acid) (PDLLA) (shell) were produced through the coaxial electrospinning of two miscible solutions. Due to the poor contrast between the PDLLA and PLLA, the core-shell structure of the resulting fibres could not be elucidated using TEM. An indirect visualisation method was devised consisting of a combination of SEM, selective dissolution, polarimetry and DSC. The method is evaluated here and applied in the investigation of the effect of spin solution concentration and flow rate on the morphology of the resulting fibers.
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Tags:
coaxial electrospinning, core-shell, poly(lactic acid).
Citation:
Kriel H, Sanderson RD, Smit E. Coaxial Electrospinning of Miscible PLLA-Core and PDLLA-Shell Solutions and Indirect Visualisation of the Core-Shell Fibres Obtained. FIBRES & TEXTILES in Eastern Europe 2012; 20, 2(91): 28-33.