Physical supercritical fluid deposition of polymer films: controlling the crystallinity with pressure

Abstract

The self-assembly of isotactic polypropylene films from supercritical n-pentane was studied. The effects of solution thermodynamics and fluid mechanics were reported.

Self-assembly of PBTTT–C14 thin films in supercritical fluids

“…Non-monotonic solubility behavior as a function of temperature was observed for both PBTTT-C 14 and isotactic polypropylene in pure n-pentane previously. 32,61 Additionally, the overall absorbance as a function of temperature for different pressures are displayed in Fig. 1 (right panel) using the total integrated intensity obtained from a fit of the data.…”

“…Previous studies from our lab on isotactic polypropylene suggests that pressure and solvent additive can exert a profound influence on the thin film morphology. 60,61 While we have formed semiconducting polymer films in our previous work using p-SFD, this study represents the first detailed examination of semiconducting polymer thin film morphologies formed using this process.…”