Sulfonated Polyimides Containing 1,2,4-Triazole Groups for Proton Exchange Membranes

Citation: Rui Lei, Lian-xun Gao, Ri-zhe Jin, Xue-peng Qiu. Sulfonated Polyimides Containing 1,2,4-Triazole Groups for Proton Exchange Membranes[J]. Chinese Journal of Polymer Science, 2014, 32(7): 941-952. doi: 10.1007/s10118-014-1460-7 shu

Sulfonated Polyimides Containing 1,2,4-Triazole Groups for Proton Exchange Membranes

1.
Shaanxi Coal and Chemical Technology Institute Co., Ltd., Xi'an 710065, China
2.
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

通讯作者: Lian-xun Gao,

摘要: A series of sulfonated polyimide copolymers as novel proton exchange materials were synthesized by the polycondensation of 1,4,5,8-naphthalene-tetracarboxylic dianhydride (NTDA), sulfonated diamine based on pyridine group and diamine containing N-phenyl-1,2,4-triazole moiety. Flexible, transparent and tough membranes with high thermal stability and good mechanical properties were obtained. They exhibited good stability in boiling water and Fenton's reagent at 80 ℃. More interestingly, a nonlinear relationship between proton conductivities of the resulting membranes and the degree of sulfonation (DS) was observed. The membrane with 50% DS exhibited the maximum proton conductivity, which was due to the combinational contributions of sulfonic acid and N-pheny-1,2,4-triazole groups. Thus, the N-phenyl-1,2,4-triazole moiety in this study not only can depress water absorption but also increase proton conductivity, especially at low DS.

关键词:

English

Sulfonated Polyimides Containing 1,2,4-Triazole Groups for Proton Exchange Membranes

1.
Shaanxi Coal and Chemical Technology Institute Co., Ltd., Xi'an 710065, China
2.
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Corresponding author: Lian-xun Gao,

Received Date: 08 November 2013
Revised Date: 11 December 2013
Available Online: 05 July 2014

Abstract: A series of sulfonated polyimide copolymers as novel proton exchange materials were synthesized by the polycondensation of 1,4,5,8-naphthalene-tetracarboxylic dianhydride (NTDA), sulfonated diamine based on pyridine group and diamine containing N-phenyl-1,2,4-triazole moiety. Flexible, transparent and tough membranes with high thermal stability and good mechanical properties were obtained. They exhibited good stability in boiling water and Fenton's reagent at 80 ℃. More interestingly, a nonlinear relationship between proton conductivities of the resulting membranes and the degree of sulfonation (DS) was observed. The membrane with 50% DS exhibited the maximum proton conductivity, which was due to the combinational contributions of sulfonic acid and N-pheny-1,2,4-triazole groups. Thus, the N-phenyl-1,2,4-triazole moiety in this study not only can depress water absorption but also increase proton conductivity, especially at low DS.

Key words:

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Sulfonated Polyimides Containing 1,2,4-Triazole Groups for Proton Exchange Membranes

通讯作者: Lian-xun Gao,

English

Sulfonated Polyimides Containing 1,2,4-Triazole Groups for Proton Exchange Membranes

Corresponding author: Lian-xun Gao,

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

Sulfonated Polyimides Containing 1,2,4-Triazole Groups for Proton Exchange Membranes

通讯作者: Lian-xun Gao,

English

Sulfonated Polyimides Containing 1,2,4-Triazole Groups for Proton Exchange Membranes

Corresponding author: Lian-xun Gao,

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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