Miscibility of Polythiophene-graft-poly(methyl methacrylate) brushes with Poly(vinylidene fluoride): Morphology, Optical and Conductivity Properties

✍ Scribed by Amit Mandal; Arun K. Nandi

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 671 KB
• Volume: 212
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.201100097

✦ Synopsis

Abstract

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 >CO 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. magnified image