Significantly enhanced CH4 permeability base on poly(styrene-b-butadiene-b-styrene)-poly(dimethylsiloxane-co-methylhydrosiloxane) crosslinked membranes

Yang, Xing1; Zhu, Tengyang1; Xu, Zongxiang2; Shan, Haiquan2; Luo, Jujie1

2018-03

10.1016/j.reactfunctpolym.2018.01.009

REACTIVE & FUNCTIONAL POLYMERS   影响因子和分区

1381-5148

1873-166X

Poly(styrene-b-butadiene-b-styrene) triblock copolymer (SBS) crosslinked membranes containing poly(dimethylsiloxane-co-methylhydrosiloxane) (PDMS-co-PMHS) were prepared by hydrosilylation reaction toward CH4/N-2 separation. The effect of an additive amount of PDMS-co-PMHS on the structure, morphology, and thermodynamic stability of crosslinked membranes were investigated by using FT-IR, SEM and TGA. Soxhlet extraction experiments were also performed to explore the crosslinking degree of membranes. In this work, the single-gas permeability of CH4 and N-2 was measured using the constant volume variable pressure method. Our experimental results showed that crosslinked membranes can significantly enhance CH4 permeability with increasing PDMS-co-PMHS content, whereas the CH4/N-2 selectivity remains unchanged. Among these crosslinked membranes, the SBS-c-PDMS-co-PMHS-70 membrane exhibited optimal CH4 permeability at room temperature and the pressure of 1 bar. Specifically, the CH4 permeability was > 10 -folds higher than that of the SBS membranes (37.6 barrer versus 443.6 barrer). Moreover, investigation of the effect of test temperature on the gas permeation of crosslinked membranes revealed a preferable CH4 permeability at 55 degrees C and 1 bar, at which the CH4 permeability reaches 679.2 barrer without a substantial compromise in selectivity.

SBS PDMS-co-PMHS Crosslinked membrane CH4 permeability

SCI ; EI

英语

其他

Natural Science Foundation of China[5157] ; Natural Science Foundation of China[2185]

Chemistry ; Engineering ; Polymer Science

Chemistry, Applied ; Engineering, Chemical ; Polymer Science

WOS:000429499900006

ELSEVIER SCIENCE BV

20180304647009

Antimony ; Butadiene ; Gas permeability ; Hydrosilylation ; Microchannels ; Styrene ; Thermodynamic stability

Antimony and Alloys:546.4 ; Thermodynamics:641.1 ; Organic Compounds:804.1 ; Physical Properties of Gases, Liquids and Solids:931.2

CHEMISTRY

Web of Science

1.Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China
2.South Univ Sci & Technol China, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China

Yang, Xing,Zhu, Tengyang,Xu, Zongxiang,et al. Significantly enhanced CH4 permeability base on poly(styrene-b-butadiene-b-styrene)-poly(dimethylsiloxane-co-methylhydrosiloxane) crosslinked membranes[J]. REACTIVE & FUNCTIONAL POLYMERS,2018,124:48-54.

Yang, Xing,Zhu, Tengyang,Xu, Zongxiang,Shan, Haiquan,&Luo, Jujie.(2018).Significantly enhanced CH4 permeability base on poly(styrene-b-butadiene-b-styrene)-poly(dimethylsiloxane-co-methylhydrosiloxane) crosslinked membranes.REACTIVE & FUNCTIONAL POLYMERS,124,48-54.

Yang, Xing,et al."Significantly enhanced CH4 permeability base on poly(styrene-b-butadiene-b-styrene)-poly(dimethylsiloxane-co-methylhydrosiloxane) crosslinked membranes".REACTIVE & FUNCTIONAL POLYMERS 124(2018):48-54.