Premium
Miscibility of Polythiophene‐ graft ‐poly(methyl methacrylate) brushes with Poly(vinylidene fluoride): Morphology, Optical and Conductivity Properties
Author(s) -
Mandal Amit,
Nandi Arun K.
Publication year - 2011
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201100097
Subject(s) - miscibility , polythiophene , materials science , polymer chemistry , methyl methacrylate , conductivity , poly(methyl methacrylate) , polymer , percolation threshold , glass transition , methacrylate , chemical engineering , fluoride , percolation (cognitive psychology) , morphology (biology) , conductive polymer , composite material , electrical resistivity and conductivity , copolymer , chemistry , inorganic chemistry , genetics , engineering , neuroscience , electrical engineering , biology
Polythiophene ‐graft‐ poly(methyl methacrylate) brushes are synthesized by ATRP. They form miscible blends with poly(vinylidene fluoride) (PVDF) due to specific interactions between the >CO groups of PT ‐g‐ PMMA with the >CF 2 groups of PVDF. PT ‐g‐ PMMA remains in the interlamellar, interfibrillar and interspherulitic regions of the PVDF crystals at both laterally and longitudinally aggregated states. In the blends both PVDF and PT ‐g‐ PMMA brushes have nanometer sizes, producing nanostructured polymer blends. The PL intensity can be tuned by varying the PT ‐g‐ PMMA concentration, and the blend exhibits good dc conductivity with a percolation threshold at 10 wt.‐% PT ‐g‐ PMMA. Conductivity data indicate a conformational transition of PT ‐g‐ PMMA chains with increasing temperature.