Exploiting pyrolysis protocols on BTDA‐TDI/MDI (P84) polyimide/nanocrystalline cellulose carbon membrane for gas separations

ABSTRACT Tubular carbon membranes were fabricated by the blending of BTDA‐TDI/MDI (P84) polyimide with nanocrystalline cellulose in a controlled pyrolysis process, specifically the pyrolysis environment (He, Ar, and N2) and the thermal soak time (30–120 min). The carbon membrane layer on a tubular s...

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Bibliographic Details
Published in:Journal of applied polymer science 2019-01, Vol.136 (1), p.n/a
Main Authors: Sazali, N., Salleh, W. N. W., Ismail, A. F., Wong, K. C., Iwamoto, Y.
Format: Article
Language:English
Subjects:
Carbon
Carbon dioxide
carbon membrane
Cellulose
Gas permeation
Heating rate
Materials science
Penetration
phermal soak time
polymer blends
Polymers
Pyrolysis
pyrolysis environment
Selectivity
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Summary:ABSTRACT Tubular carbon membranes were fabricated by the blending of BTDA‐TDI/MDI (P84) polyimide with nanocrystalline cellulose in a controlled pyrolysis process, specifically the pyrolysis environment (He, Ar, and N2) and the thermal soak time (30–120 min). The carbon membrane layer on a tubular support is converted to carbon matrix at 800 °C with a heating rate of 3 °C min−1. The effects of these controlled pyrolysis conditions on the gas permeation properties have been investigated. The results revealed that the pyrolysis under Ar gas environment at 120 min of thermal soak time have the best gas permeation performance with the highest CO2/CH4 selectivity of 68.2 ± 3.3 and CO2 permeance of 213.6 ± 2.2 GPU. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 46901.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.46901