Characterization and gas transport properties of UV-irradiated polydimethylsiloxane (PDMS)-containing polyimide copolymer membranes
- Authors
- Park, Jaesung; Gaines, Kyle E.; Jheng, Li-Cheng; Riffle, Judy S.; Mecham, Sue J.; McGrath, James E.; Park, Ho Bum; Paul, Donald R.; Freeman, Benny D.
- Issue Date
- Dec-2020
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Polyimide; Polydimethylsiloxane; Copolymer; Gas separations; UV crosslinking
- Citation
- POLYMER, v.210, pp.1 - 13
- Indexed
- SCIE
SCOPUS
- Journal Title
- POLYMER
- Volume
- 210
- Start Page
- 1
- End Page
- 13
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/8144
- DOI
- 10.1016/j.polymer.2020.122966
- ISSN
- 0032-3861
- Abstract
- The influence of UV irradiation on gas permeation properties of random segmented poly (imide-siloxane) (PIS) copolymer films was investigated. Random segmented copolymers were synthesized via ester-acid imidization from 4,4'-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) and 3,3′,4,4′-benzophenone tetracarboxylic dianhydride (BTDA) in a 7:3 M ratio with 2,4-diamino mesitylene (DAM) and varying amounts of a diamine terminated polydimethylsiloxane (PDMS) oligomer (Mn = 3000 g/mol). Solvent cast films of these copolymers were UV-irradiated on both sides in air at 365 nm, which induced crosslinking and photooxidation. Pure-gas permeabilities of H2, O2, N2, CH4, and CO2 were measured with upstream pressures ranging from 2 to 18 atm at 35 °C. Gas permeability coefficients of a series of PIS copolymers decreased, and selectivity of all gas pairs increased after UV irradiation due to a decrease in free volume by UV crosslinking and photooxidation.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 에너지공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/8144)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.