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2008-12-01 - Article/Dans un journal avec peer-review - Anglais - 10 page(s)

Jeusette Mélanie, Peeterbroeck Sophie , Simal F., Cossement D., Roose P., Leclère Philippe , Dubois Philippe , Hecq Michel, Lazzaroni Roberto , "Microscopic Morphology of Blends Between a New “All-acrylate” Radial Block Copolymer and a Rosin Ester Resin for Pressure Sensitive Adhesives" in European Polymer Journal, 44, 12, 3931-3940

  • Edition : Elsevier Science
  • Codes CREF : Chimie des surfaces et des interfaces (DI1327), Chimie macromoléculaire (DI1315), Chimie des polymères de synthèse (DI131C), Catalyses hétérogène et homogène (DI1334), Optique (DI1250), Chimie des solides (DI1316)
  • Unités de recherche UMONS : Matériaux Polymères et Composites (S816), Chimie des matériaux nouveaux (S817), Chimie des interactions plasma-surface (S882)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
Texte intégral :

Abstract(s) :

(Anglais) With the goal of developing new pressure sensitive adhesive systems, the miscibility and the phase morphology of blends between novel symmetric four-arm star "all-acrylate" block copolymers synthesized by atom transfer radical polymerization (ATRP) and a rosin ester resin tackifier was studied with a combined differential scanning calorimetry (DSC) and atomic force microscopy (AFM) approach. Copolymer-resin compositions with increasing resin content in the blend were studied. The DSC results show good miscibility for compositions lower than 60wt%, with a single glass transition at a temperature between those of the two pure compounds. The AFM results indicate that the initial two-phase morphology typical of the block copolymer matrix is preserved up to 60 wt% of resin. Above that value, a third phase, attributed to aggregates of the pure resin, is observed. Upon ageing, the homogeneous systems (e.g., blends with 40 wt% of resin) undergo a slow migration of the tackifying resin towards the surface of the sample, which can be understood in terms of surface free energy considerations. This eventually leads to the formation of a layer of pure resin at the surface.

Notes :
  • (Anglais) Publié en ligne le 11 septembre 2008
  • (Anglais) Lecture en ligne: http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TWW-4TDVMH6-5-N&_cdi=5573&_user=532054&_pii=S0014305708004643&_origin=search&_coverDate=12%2F31%2F2008&_sk=999559987&view=c&wchp=dGLbVlz-zSkzV&md5=7bcc77a6bde6b558b7816aa4336b9c9d
Identifiants :
  • DOI : 10.1016/j.eurpolymj.2008.09.003