Preparation and properties of lanthanide metal-organic frameworks/polyimide composites

被引：0

作者：

Wang T. ^{[1
]}

Xiao G. ^{[1
]}

Lu Y. ^{[1
]}

Hao J. ^{[1
]}

Chi H. ^{[1
]}

Dong Y. ^{[1
]}

Hu Z. ^{[1
]}

机构：

[1] School of Chemical Engineering, University of Science and Technology Liaoning, Anshan

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2018年 / 35卷 / 11期

关键词：

Composites; Gas separation properties; Mechanical properties; Metal-organic frameworks; Optical properties; Polyimides; Thermal properties;

D O I：

10.13801/j.cnki.fhclxb.20180126.002

中图分类号：

学科分类号：

摘要：

Two kinds of lanthanide metal-organic frameworks such as terbium benzene-1, 3, 5-tricarboxylate (Tb(BTC)) and europium benzene-1, 3, 5-tricarboxylate (Eu(BTC)) were synthesized by hydrothermal method. 1, 4-bis(2-trifluoromethyl-4-aminophenoxy)benzene (6FAPB) and 1, 2, 3, 4-cyclobutane dianhydride (CBDA) as the monomers of polyimide (PI), the Tb(BTC)/PI and Eu(BTC)/PI composites containing 7wt% Tb(BTC) or Eu(BTC) (mass fraction) were prepared by the in-situ polymerization. The structure and properties of the Tb(BTC)/PI and Eu(BTC)/PI composites were characterized by FTIR, UV-visible spectrometer (UV-vis), TGA, XRD, SEM, universal tensile testing machine and gas permeabilities testing. These experimental results show that Tb(BTC) and Eu(BTC) contain very few pore structures, belonging to the mesoporous range, and exhibit high thermal stabilities. The introduction of Tb(BTC) and Eu(BTC) improves the thermal and mechanical properties of PI(6FAPB-CBDA). The glass transition temperatures increase from 351.9℃ of pure PI(6FAPB-CBDA) to 358.0℃ and 354.8℃, and the 5% thermal decomposition temperatures increase from 431.6℃ to 447.8℃ and 441.1℃. The tensile strengths of Tb(BTC)/PI and Eu(BTC)/PI composites increase from 60.8 MPa to 77.7 MPa and 70.4 MPa, and the Young's modulus increase from 1.54 GPa to 2.80 GPa and 2.17 GPa, respectively. However, the optical transmittances at 500 nm of Tb(BTC)/PI and Eu(BTC)/PI composites reduce from 82.3% to 23.0% and 24.2%. The results of gas permeability testing show that both of Tb(BTC) and Eu(BTC) can improve the gas permeabilities of the PI-(6FAPB-CBDA) membrane. The effect of Eu(BTC) is better than Tb(BTC). The permeabilities of H 2 , O 2 , N 2 and CO 2 of Eu(TBC)/PI composite are 119.23, 15.02, 3.21 and 90.35 Barrer, respectively, and O 2 /N 2 is 4.68, CO 2 /N 2 is 28.15. © 2018, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.

引用

页码：2927 / 2934

页数：7

共 27 条

[1]

Baker R.W., Future directions of membrane gas separation technology, Industrial and Engineering Chemistry Research, 41, 6, pp. 1393-1411, (2002)

[2]

Hashim S.S., Mohamed A.R., Bhatia S., Oxygen separation from air using ceramic-based membrane technology for sustainable fuel production and power generation, Renewable and Sustainable Energy Reviews, 15, 2, pp. 1284-1293, (2011)

[3]

Chen X., Wang Y., Jiang L., Research progress of preparation methods of CO <sub>2</sub> -favored permeation membranes , Chemical Journal of Chinese Universities, 34, 2, pp. 249-268, (2013)

[4]

Lu Y.H., Hao J.C., Li L., Et al., Synthesis of thermally induced rigid membranes and their gas separation properties, Acta Polymerica Sinica, 8, pp. 1145-1150, (2016)

[5]

Chung T.S., Jiang L.Y., Li Y., Et al., Mixed matrix membranes (MMMs) comprising organic polymers with dispersed inorganic fillers for gas separation, Progress in Polymer Science, 32, 4, pp. 483-507, (2007)

[6]

Nasir R., Mukhtar H., Man Z., Et al., Material advancements in fabrication of mixed-matrix membranes, Chemical Engineering & Technology, 36, 5, pp. 717-727, (2013)

[7]

Jusoh N., Yeong F.Y., Lau K.K., Et al., Enhanced gas separation performance using mixed matrix membranes containing zeolite T and 6FDA-durene polyimide, Journal of Membrane Science, 525, pp. 175-186, (2017)

[8]

Chen B., Yang Y., Zapata F., Et al., Luminescent open metal sites within a metal-organic framework for sensing small molecules, Advanced Materials, 19, 13, pp. 1693-1696, (2007)

[9]

Duan C.J., Cao Y.M., Jie X.M., Et al., Preparation and gas separation properties of metal-organic frameworks/polyimide mixed matrix membranes, Chemical Journal of Chinese Universities, 35, 7, pp. 1584-1589, (2014)

[10]

Wang Z.G., Wang D., Zhang S.X., Et al., Interfacial design of mixed matrix membranes for improved gas separation performance, Advanced Materials, 28, 17, pp. 3399-3405, (2016)

← 1 2 3 →