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题名: Gas Separation Properties of Cellulose Acetate Butyrate/MWCNTs Mixed Matrix Membranes
作者: Feng, Ye1, 2; Zhang, Jin-ming1; Zhang, Jun1
关键词: Cellulose acetate butyrate ; Multi-walled carbon nanotubes ; Gas separation ; Mixed matrix membranes
刊名: ACTA POLYMERICA SINICA
发表日期: 2015-12-20
期: 12, 页:1396-1401
收录类别: SCI
英文摘要: A new kind of mixed matrix membranes (MMMs) with cellulose acetate butyrate (CAB) as matrix and multi-walled carbon nanotubes (MWCNTs) as fillers was prepared by solvent mixing-solution casting method. The morphology, structure and mechanical properties of CAB/MWCNTs MMMs were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and tensile testing. The results showed that MWCNTs and CAB matrix had good interfacial adhesion. No obvious defect was observed on the fracture surface of CAB/MWCNTs MMMs. The obtained CAB/MWCNTs MMMs exhibited good mechanical properties. Furthermore, gas separation properties of the CAB/MWCNTs MMMs for O-2, N-2, CH4, CO and CO2 were investigated. It was found that. with the increase of MWCNTs content. the permeability coefficients of CAB/MWCNTs MMMs for all test gases (O-2, N-2, CH4, CO, CO2) were significantly improved. especially for "quicker gas" -O-2 and CO2. When the content of MWCNTs was 30 wt%. the permeability of MMMs for O2 and CO2 reached 40.24 and 180.20 Barrer. which compared with neat CAB membrane. increased by 300% and 260%. respectively. Moreover. the CAB/MWCNTs MMMs showed excellent separation property for some gas pairs. such as CO2/N-2, CO2/CH4, CO2 /CO and O-2/N-2. The selectivity of CO2/N-2, CO2/CH4 and CO2/CO was not sacrificed with the increase of CO2 permeability. More interestingly. with the increase of O2 permeability. the selectivity of O-2/N-2 also increased from 3.2 to 4.0. an increase of 25% compared with neat CAB membranes. Therefore. the present work provides a facile and effective method to prepare new kind of cellulose based MMMs with improved gas separation properties.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35823
Appears in Collections:工程塑料实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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