论文摘要
Titanium（Ⅳ） oxide（TiO2） nanoparticles have been incorporated into mixed matrix membranes（MMMs） to improve gas separation performance. However, TiO2 nanoparticles tend to agglomerate due to high surface energy and van der Waals forces. This leads to precipitation which causes the formation of non-homogeneous MMM morphology. In this study, the effect of octaisobutyl polyhedral oligomeric silsesquioxane（POSS） addition on TiO2/polysulfone MMM was investigated. The aims are to enhance gas separation performance whilst preventing agglomeration of TiO2 nanoparticles. The results demonstrated that inclusion of POSS as dispersant increases MMMs’ CO2/CH4 selectivity and permeance, possibly due to less void formation and more evenly distributed pore structure. For example, synergistic addition of 5 wt% TiO2 and 5 wt% POSS increased the CO2/CH4 selectivity up to 390% compared to MMM without POSS. This is supported by elemental mapping of titanium which revealed that POSS successfully dispersed TiO2 nanoparticles and prevented aggregation. TiO2-POSS/PSf MMMs also retained their favorable thermal stability.
论文目录
文章来源
类型: 期刊论文
作者: Grace Ying En Tan,Pei Ching Oh,Kok Keong Lau,Siew Chun Low
来源: Chinese Journal of Polymer Science 2019年07期
年度: 2019
分类: 工程科技Ⅰ辑
专业: 无机化工,有机化工
单位: CO_2 Research Centre (CO_2RES), Institute of Contaminant Management, Chemical Engineering Department, Universiti Teknologi PETRONAS,School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia
基金: financial support received from YUTP-FRG (No. 015 3AA-E08),FRGS (Ref. No. FRGS,1,2018,TK02,UTP,02,3,Cost Center 015MA0003)
分类号: TQ051.893
页码: 654-663
总页数: 10
文件大小: 1463K
下载量: 10
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