Colloidal Crystalline Arrays of β-Polymorphic Poly(vinylidene fluoride)

✍ Scribed by M. Habibur Rahman; Arun K. Nandi

• Book ID: 102489153
• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 126 KB
• Volume: 288
• Category: Article
• ISSN: 1438-7492
• DOI: 10.1002/mame.200300033

✦ Synopsis

Abstract

Stable layers of nearly monodisperse spheres of β‐polymorphic poly(vinylidene fluoride) with iridescent properties are prepared. The colloidal crystalline arrays (CCAs) were characterized by optical microscopy, differential scanning calorimetry (DSC), and FT‐IR spectroscopy. FT‐IR spectroscopic and wide‐angle X‐ray scattering (WAXS) studies revealed a β‐polymorphic PVF~2~ structure, the DSC study showed that the level of crystallinity in the CCA was much higher than that in the melt‐crystallized sample, and UV‐visible spectroscopy showed extinction peaks at 323 and 510 nm in the CCAs. The β‐polymorphic PVF~2~ structure, along with the optical extinction properties of these CCAs, raises the prospect of their application in optical filters and/or piezoelectric sensors.

Optical micrograph of PVF~2~ CCA films cast on glass substrates.

magnified imageOptical micrograph of PVF~2~ CCA films cast on glass substrates.