The electrospinning technique is used to obtain functionalized polymeric fibers. Blends of polyethyleneoxide (PEO) and poly-3-dodecylthiophene (P3DDT) have been spun from chloroform solution. The fibers diameter is approximately 1 m and both polymer components occur in the fibers as separated phases. By washing the fibers with acetonitrile the PEO matrix is completely removed. This process is fast and it leaves long and homogeneous fibers of P3DDT. The morphology and structure of the fibers have been studied with microscopy (SEM and fluorescence confocal microscopy), whereas infrared spectroscopy has been used to check the removal of PEO matrix, to understand the conformation of the polythiophene chains and their orientation in the fibers. Measurements with confocal and SEM microscopes show the homogeneity of the washed fibers; from polarized infrared spectroscopy, the polythiophene chains are mostly aligned along the fiber axis. The electrospinning process followed by a suitable washing step makes possible to orient fibers with a high molecular order.

Electrospun polyalkylthiophene/polyethyleneoxide fibers: optical characterization

BIANCO, ANDREA;BERTARELLI, CHIARA;GALLAZZI, MARIA CARMELA;ZERBI, GIUSEPPE
2007

Abstract

The electrospinning technique is used to obtain functionalized polymeric fibers. Blends of polyethyleneoxide (PEO) and poly-3-dodecylthiophene (P3DDT) have been spun from chloroform solution. The fibers diameter is approximately 1 m and both polymer components occur in the fibers as separated phases. By washing the fibers with acetonitrile the PEO matrix is completely removed. This process is fast and it leaves long and homogeneous fibers of P3DDT. The morphology and structure of the fibers have been studied with microscopy (SEM and fluorescence confocal microscopy), whereas infrared spectroscopy has been used to check the removal of PEO matrix, to understand the conformation of the polythiophene chains and their orientation in the fibers. Measurements with confocal and SEM microscopes show the homogeneity of the washed fibers; from polarized infrared spectroscopy, the polythiophene chains are mostly aligned along the fiber axis. The electrospinning process followed by a suitable washing step makes possible to orient fibers with a high molecular order.
Poly-3-dodecylthiophene; Electrospinning; Confocal microscopy; Infrared spectroscopy
File in questo prodotto:
File Dimensione Formato  
30_synth_metals_2007.pdf

Accesso riservato

: Altro materiale allegato
Dimensione 561.51 kB
Formato Adobe PDF
561.51 kB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/552156
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 48
social impact