Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/144246
Title: DEVELOPMENT OF ADVANCED COMPOSITE HOLLOW FIBER MEMBRANES FOR GAS AND VAPOR SEPARATION
Authors: LIANG CANZENG
Keywords: hollow fiber membrane, thin film composite, coating, polydimethylsiloxane-PDMS, gas/vapor separation, dehumidification
Issue Date: 27-Feb-2018
Citation: LIANG CANZENG (2018-02-27). DEVELOPMENT OF ADVANCED COMPOSITE HOLLOW FIBER MEMBRANES FOR GAS AND VAPOR SEPARATION. ScholarBank@NUS Repository.
Abstract: High-performance composite hollow fiber membranes have been developed in this thesis. Firstly, a highly crosslinked polydimethylsiloxane (PDMS) with a huge molecular network (577000 g/mol) can be synthesized by applying the post-crosslinking method. The resultant PDMS/polyacrylonitrile (PAN) composite membrane shows impressive O2 and CO2 permeances which are higher than 1000 and 5000 GPU, respectively; while the corresponding selectivities of O2/N2 and CO2/N2 are about 2 and 11, respectively. Secondly, polymers of intrinsic microporosity (PIMs)/PDMS/PAN three-layer composite membranes were fabricated by introducing a properly defective PDMS gutter layer between the PIM selective layer and PAN substrates. The optimal defect-free PIM composite membrane has pure O2 and CO2 permeances of 69 and 483 GPU, respectively. Lastly, a robust and defect-free PDMS/PAN composite hollow fiber membrane has been developed for air/biogas dehumidification. The as-produced PDMS/PAN composite membrane has a water vapor permeance ranging from about 800 to 3700 GPU depending on operation conditions.
URI: http://scholarbank.nus.edu.sg/handle/10635/144246
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Liang CZ - 6 June 2018.pdf5.23 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

13
checked on Aug 16, 2018

Download(s)

11
checked on Aug 16, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.