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2008-03-01 - Article/Dans un journal avec peer-review - Anglais - 13 page(s)

Paneva Dilyana, Bougard F., Manolova Nevena, Dubois Philippe , Rashkov Iliya, "Novel electrospun poly(e-caprolactone)-based bicomponent nanofibers possessing enriched in tertiary amino groups surface" in European Polymer Journal, 44, 3, 566-578

  • Edition : Elsevier Science
  • Codes CREF : Chimie macromoléculaire (DI1315), Catalyses hétérogène et homogène (DI1334)
  • Unités de recherche UMONS : Matériaux Polymères et Composites (S816)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
Texte intégral :

Abstract(s) :

(Anglais) For the first time preparation of electrospun poly(e-caprolactone) (PCL) based nanofibers possessing surface enriched in tertiary amino groups is shown. For that purpose the pair PCL and poly(e-caprolactone)-b-poly[(2-dimethylamino)ethyl methacrylate] (PCL-b-PDMAEMA) diblock copolymers was used. PCL-b-PDMAEMA copolymers were synthesized using a combination of ring-opening polymerization and atom transfer radical polymerization (ATRP). Nanofibers with mean diameters ranging from 400 to 800 nm were obtained. Their morphology was evaluated by scanning electron (SEM) and atomic force microscopy (AFM). It was found that the morphology of the fibers depended on the weight ratio between the partners and the length of the PDMAEMA-block in the copolymers. The enrichment of the fiber surface in tertiary amino groups was studied by X-ray photoelectron spectroscopy (XPS). Increasing the copolymer content and the length of the PDMAEMA-block led to increase of the amount of tertiary amino groups on the fiber surface. The AFM analyses of the mechanical properties of the fiber surface showed that increasing the copolymer content led to decrease of the surface stiffness. The increase of the copolymer content led also to decrease of the melting temperature and the crystallinity degree in respect to PCL from the (co)polymer as determined by differential scanning calorimetry.

Notes :
  • (Anglais) Lecture en ligne: http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TWW-4RKMJ4N-1-K&_cdi=5573&_user=532054&_pii=S0014305708000153&_origin=search&_coverDate=03%2F31%2F2008&_sk=999559996&view=c&wchp=dGLbVlW-zSkzS&md5=175efd2cf75896a6111aac585ab6cc40
  • (Anglais) Publié en ligne le 15 janvier 2008
Identifiants :
  • DOI : 10.1016/j.eurpolymj.2008.01.010