Highly Soluble Polyimides Containing Di-<italic style="font-style: italic">tert</italic>-butylbenzene and Dimethyl Groups with Good Gas Separation Properties and Optical Transparency

Chen-Yi Wang; Cai-Rong Jiang; Bin Yu; Xiao-Yan Zhao; Zhao-Liang Cui; Jian Li; Qiang Ren

doi:10.1007/s10118-020-2377-y

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Highly Soluble Polyimides Containing Di-tert-butylbenzene and Dimethyl Groups with Good Gas Separation Properties and Optical Transparency

ARTICLE | Updated：2020-02-18

- Highly Soluble Polyimides Containing Di-tert-butylbenzene and Dimethyl Groups with Good Gas Separation Properties and Optical Transparency
- Chinese Journal of Polymer Science Vol. 38, Issue 7, Pages: 759-768(2020)
- Affiliations：
  
  a.Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China
  b.State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
- Author bio：
  
  wangcy@cczu.edu.cn (C.Y.W.)
  zhaoxiaoyan@cczu.edu.cn (X.Y.Z.)
- Funds：
- DOI：10.1007/s10118-020-2377-y
  CLC：
- Received：26 October 2019，
  
  Revised：2020-11-26，
  
  Accepted：28 November 2019，
  
  Online First：18 February 2020，
  
  Published：2020-07
- Accepted：
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Wang, C. Y.; Jiang, C. R.; Yu, B.; Zhao, X. Y.; Cui, Z. L.; Li, J.; Ren, Q. Highly soluble polyimides containing di-, tert,-butylbenzene and dimethyl groups with good gas separation properties and optical transparency. Chinese J. Polym. Sci. 2020, 38, 759–768

Chen-Yi Wang, Cai-Rong Jiang, Bin Yu, et al. Highly Soluble Polyimides Containing Di-tert-butylbenzene and Dimethyl Groups with Good Gas Separation Properties and Optical Transparency[J]. Chinese Journal of Polymer Science, 2020, 38(7): 759-768. DOI: 10.1007/s10118-020-2377-y.
Wang, C. Y.; Jiang, C. R.; Yu, B.; Zhao, X. Y.; Cui, Z. L.; Li, J.; Ren, Q. Highly soluble polyimides containing di-, tert,-butylbenzene and dimethyl groups with good gas separation properties and optical transparency. Chinese J. Polym. Sci. 2020, 38, 759–768 DOI： 10.1007/s10118-020-2377-y.

Chen-Yi Wang, Cai-Rong Jiang, Bin Yu, et al. Highly Soluble Polyimides Containing Di-tert-butylbenzene and Dimethyl Groups with Good Gas Separation Properties and Optical Transparency[J]. Chinese Journal of Polymer Science, 2020, 38(7): 759-768. DOI: 10.1007/s10118-020-2377-y. DOI：

摘要

Abstract

A rigid aromatic diamine monomer containing di-

tert

-butylbenzene and dimethyl groups

3′-dimethyl-4

4′-diaminophenyl- 3″

5″-di-

tert

-butyltoluene

was successfully synthesized by a simple coupling reaction using 3

5-di-

tert

-butylbenzaldehyde and

-toluidine as starting materials. A series of novel polyimides (

PI 3a

−

) with large pendant groups were prepared with the obtained diamine monomer and three different commercial aromatic dianhydrides (3

3′

4′-biphenyltetracarboxylic dianhydride

4′-oxydiphthalic anhydride

and 4

4′-(hexafluoroisopropylidene)diphthalic anhydride) by one-step high temperature polycondensation. The prepared polyimides exhibited high solubility and good membrane forming ability: they could be dissolved not only in some high boiling solvents such as DMF

NMP

DMAc

and

-Cresol at room temperature

but also in some low boiling solvents such as CHCl

and THF. Their solubility in most solvents could exceed 10 wt%

and the flexible membranes could be obtained by casting their solutions. The prepared membranes exhibited good gas separation properties. The permeability coefficients of

PI 3c

for CO

and O

were up to 124.6 and 42.8 barrer

respectively

and the selectivity coefficients for CO

/CH

and O

were 14.7 and 3.3

respectively. The membranes had light color and good optical transmission. Their optical transmittance at 450 nm wavelength was in the range of 67%−79%

and the cutoff wavelength was in the range of 310−348 nm. They also had good thermal properties with glass transition temperature (

) values in the range of 264−302 °C. In addition

these membranes possessed good mechanical properties with tensile strength ranging between 77.8−87.4 MPa

initial modulus ranging between 1.69−1.82 GPa

and elongation at break ranging between 4.8%−6.1%.

关键词

Keywords

references

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⁰

Highly Soluble Polyimides Containing Di-tert-butylbenzene and Dimethyl Groups with Good Gas Separation Properties and Optical Transparency

DOI：10.1007/s10118-020-2377-y

摘要

Abstract

关键词

Keywords

references