SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2018, Vol. 26 ›› Issue (11): 2385-2390.DOI: 10.1016/j.cjche.2018.05.023

• Special issue of Carbon Capture, Utilisation and Storage • Previous Articles    

Impregnation of carbonaceous nanofibers into glassy polymer-based composite membrane for CO2 separation

Pannir Selvam Murugiah, Pei Ching Oh, Kok Keong Lau   

  1. CO2 Research Centre, Institute of Contaminant Management, Chemical Engineering Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
  • Received:2018-03-18 Revised:2018-05-20 Online:2018-12-10 Published:2018-11-28
  • Contact: Pei Ching Oh

Impregnation of carbonaceous nanofibers into glassy polymer-based composite membrane for CO2 separation

Pannir Selvam Murugiah, Pei Ching Oh, Kok Keong Lau   

  1. CO2 Research Centre, Institute of Contaminant Management, Chemical Engineering Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
  • 通讯作者: Pei Ching Oh

Abstract: The development of defect-free composite membrane (CM) is often challenging due to poor dispersion and distribution of filler particles in the polymer matrix. Despite the attractive physicochemical properties and gas separation performance of carbon nanotube (CNT) based CM, CNT displayed poor dispersion characteristics in most polymer matrix domain. Instead of incorporating CNT, a viable alternative, carbon nanofiber (CNF) which exhibits similar properties as CNT, but improved dispersion quality in the polymer matrix is found. In this work, CNF particles were incorporated in poly(2,6-dimethyl-1,4-phenylene oxide) (PPOdm) polymer continuous phase for CM development. The optimum gas separation performance of the PPOdm-CNF CM (11.25 at 197.02 barrer of CO2 permeability) was obtained at 3 wt% of CNF loading. Compared to pristine PPOdm membrane, CO2 permeability and CO2/CH4 selectivity of PPOdm-3 wt% CNF CM were enhanced by 180% and 55%, respectively. At 3 wt% CNF loading, the filler particles were dispersed and distributed more homogenously, in which no obvious CNF agglomeration was observed. In addition, the incorporation of CNF particles also enhanced the mechanical and thermal properties of the resultant CM.

Key words: Carbon nanofiber, Composite membrane, Carbon dioxide, Gas separation

摘要: The development of defect-free composite membrane (CM) is often challenging due to poor dispersion and distribution of filler particles in the polymer matrix. Despite the attractive physicochemical properties and gas separation performance of carbon nanotube (CNT) based CM, CNT displayed poor dispersion characteristics in most polymer matrix domain. Instead of incorporating CNT, a viable alternative, carbon nanofiber (CNF) which exhibits similar properties as CNT, but improved dispersion quality in the polymer matrix is found. In this work, CNF particles were incorporated in poly(2,6-dimethyl-1,4-phenylene oxide) (PPOdm) polymer continuous phase for CM development. The optimum gas separation performance of the PPOdm-CNF CM (11.25 at 197.02 barrer of CO2 permeability) was obtained at 3 wt% of CNF loading. Compared to pristine PPOdm membrane, CO2 permeability and CO2/CH4 selectivity of PPOdm-3 wt% CNF CM were enhanced by 180% and 55%, respectively. At 3 wt% CNF loading, the filler particles were dispersed and distributed more homogenously, in which no obvious CNF agglomeration was observed. In addition, the incorporation of CNF particles also enhanced the mechanical and thermal properties of the resultant CM.

关键词: Carbon nanofiber, Composite membrane, Carbon dioxide, Gas separation