Get access

Organic–inorganic hybrid diblock copolymer composed of poly (ε-caprolactone) and poly(MA POSS): Synthesis and its nanocomposites with epoxy resin

Authors

  • Lei Wang,

    1. Department of Polymer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
    Search for more papers by this author
  • Jingang Li,

    1. Department of Polymer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
    Search for more papers by this author
  • Lei Li,

    Corresponding author
    1. Department of Polymer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
    • State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
    Search for more papers by this author
  • Sixun Zheng

    Corresponding author
    1. Department of Polymer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
    2. State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
    • Department of Polymer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
    Search for more papers by this author

Abstract

Organic–inorganic hybrid diblock copolymers composed of poly(ε-caprolactone) and poly(MA POSS) [PCL-b-P(MA POSS)] were synthesized via reversible addition-fragmentation chain transfer polymerization of 3-methacryloxypropylheptaphenyl polyhedral oligomeric silsesquioxane (MA POSS) with dithiobenzoate-terminated poly(ε-caprolactone) as the macromolecular chain transfer agent. The dithiobenzoate-terminated poly(ε-caprolactone) (PCL-CTA) was synthesized via the atom transfer radical reaction of 2-bromopropionyl-terminated PCL with bis(thiobenzoyl)disulfide in the presence of the complex of copper (I) bromide with N,N,N′,N″,N″-pentamethyldiethylenetriamine. The results of molecular weights and polydispersity indicate that the polymerizations were in a controlled fashion. The organic–inorganic diblock copolymer was incorporated into epoxy to afford the organic–inorganic nanocomposites. The nanostructures of the organic–inorganic composites were investigated by means of transmission electron microscopy and dynamic mechanical thermal analysis. Thermogravimetric analysis shows that the organic–inorganic nanocomposites displayed the increased yields of degradation residues compared to the control epoxy. In the organic–inorganic nanocomposites, the inorganic block [viz., P(MA POSS)] had a tendency to enrich at the surface of the materials and the dewettability of surface for the organic–inorganic nanocomposites were improved in terms of the measurement of surface contact angles. © 2013 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013

Get access to the full text of this article

Ancillary