Enhanced mobility and increased gas sorption capacity in thin film and nanoconduit confined polymers

✍ Scribed by Jason P. Killgore; Lakshmi S. Kocherlakota; René M. Overney

• Book ID: 105339310
• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 611 KB
• Volume: 48
• Category: Article
• ISSN: 0887-6266
• DOI: 10.1002/polb.21904

✦ Synopsis

Abstract

Poly(tert butyl acrylate) (PTBA) is found to exhibit enhanced mobility when spun cast into thin films or impregnated into cylindrical anodic aluminum oxide (AAO) nanoscale pores. In a thin film configuration, the glass transition temperature of 20 nm thick PTBA is found to decrease almost 20 °C compared to the bulk. Consistent with this mobility increase, an increased volume fraction of interphase polymer leads to at least a 2.4 times viscosity reduction when PTBA is impregnated in 100 nm pores versus 200 nm pores. Such increases in mobility result in a 15‐fold increase in CO~2~ permeability for an AAO confined geometry compared to a bulk film. © 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 434–441, 2010