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2008-03-04 - Article/Dans un journal avec peer-review - Anglais - 9 page(s)

Brocorens Patrick , Benali Samira , Broekaert C., Monteverde F., Miltner H.E., Van Mele B., Alexandre M., Dubois Philippe , Lazzaroni Roberto , "Microscopic Morphology of Chlorinated Polyethylene-Based Nanocomposites Synthesized from Poly(e-caprolactone)/Clay Masterbatches" in Langmuir, 24, 5, 2072-2080

  • Edition : American Chemical Society, Washington (DC)
  • Codes CREF : Chimie macromoléculaire (DI1315), Chimie quantique (DI1321), Catalyses hétérogène et homogène (DI1334), Optique (DI1250)
  • Unités de recherche UMONS : Matériaux Polymères et Composites (S816), Chimie des matériaux nouveaux (S817)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
Texte intégral :

Abstract(s) :

(Anglais) Chlorinated polyethylene (CPE) nanocomposites were synthesized by melt blending clay-rich/poly(e-caprolactone) (PCL) masterbatches to CPE matrices. The masterbatches were prepared following two synthetic routes: either PCL is melt-blended to the clay or it is grafted to the clay platelets by in situ polymerization. The microscopic morphology of the nanocomposites was characterized by X-ray diffraction, atomic force microscopy, transmission electron microscopy, and modulated temperature differential scanning calorimetry. When using free PCL, intercalated composites are formed, with clay aggregates that can have micrometric dimensions and a morphology similar to that of the talc particles used as fillers in commercial CPE. PCL crystallizes as long lamellae dispersed in the polymer matrix. When using grafted PCL, the nanocomposite is intercalated/exfoliated, and the clay stacks are small and homogeneously dispersed. PCL crystallizes as lamellae and smaller crystals, which are localized along the clay layers. Thanks to the grafting of PCL to the clay platelets, these crystalline domains are thought to form a network with the clay sheets, which is responsible for the large improvement of the mechanical properties of these materials.

Notes :
  • (Anglais) Publié le 23 janvier 2008
Identifiants :
  • DOI : 10.1021/la702822d