Synthesis of hyperbranched polybenzimidazoles and their membrane formation

Hongjie Xu; Kangcheng Chen; Xiaoxia Guo; Jianhua Fang; Jie Yin

doi:10.1016/j.memsci.2006.11.022

Synthesis of hyperbranched polybenzimidazoles and their membrane formation

Hongjie Xu, Kangcheng Chen, Xiaoxia Guo, Jianhua Fang^*, Jie Yin

^*Corresponding author for this work

Shanghai Jiao Tong University

Research output: Contribution to journal › Article › peer-review

67 Citations (Scopus)

Abstract

A series of amine-terminated hyperbranched polybenzimidazoles (HBPBIs) were successfully synthesized by condensation polymerization of aromatic dicarboxylic acids and an in situ synthesized aromatic hexamine intermediate product from 1,3,5-benzenetricarboxylic acid (BTA) and 3,3′-diaminobenzidine (DAB) in polyphosphoric acid (PPA) at 190 °C for 20 h. HBPBI membranes were fabricated by solution cast method in the presence of cross-linkers (ethylene glycol diglycidyl ether (EGDE) and terephthaldehyde (TPA)). The resulting HBPBI membranes displayed good mechanical properties and good thermal stability. High proton conductivity was obtained with the phosphoric acid-doped and TPA-cross-linked HBPBI membranes at 0% relative humidity.

Original language	English
Pages (from-to)	255-260
Number of pages	6
Journal	Journal of Membrane Science
Volume	288
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2006.11.022
Publication status	Published - 1 Feb 2007
Externally published	Yes

Keywords

Hyperbranched polybenzimidazole
Membrane
Proton conductivity
Synthesis

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10.1016/j.memsci.2006.11.022

Cite this

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title = "Synthesis of hyperbranched polybenzimidazoles and their membrane formation",

abstract = "A series of amine-terminated hyperbranched polybenzimidazoles (HBPBIs) were successfully synthesized by condensation polymerization of aromatic dicarboxylic acids and an in situ synthesized aromatic hexamine intermediate product from 1,3,5-benzenetricarboxylic acid (BTA) and 3,3′-diaminobenzidine (DAB) in polyphosphoric acid (PPA) at 190 °C for 20 h. HBPBI membranes were fabricated by solution cast method in the presence of cross-linkers (ethylene glycol diglycidyl ether (EGDE) and terephthaldehyde (TPA)). The resulting HBPBI membranes displayed good mechanical properties and good thermal stability. High proton conductivity was obtained with the phosphoric acid-doped and TPA-cross-linked HBPBI membranes at 0\% relative humidity.",

keywords = "Hyperbranched polybenzimidazole, Membrane, Proton conductivity, Synthesis",

author = "Hongjie Xu and Kangcheng Chen and Xiaoxia Guo and Jianhua Fang and Jie Yin",

year = "2007",

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doi = "10.1016/j.memsci.2006.11.022",

language = "English",

volume = "288",

pages = "255--260",

journal = "Journal of Membrane Science",

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TY - JOUR

T1 - Synthesis of hyperbranched polybenzimidazoles and their membrane formation

AU - Xu, Hongjie

AU - Chen, Kangcheng

AU - Guo, Xiaoxia

AU - Fang, Jianhua

AU - Yin, Jie

PY - 2007/2/1

Y1 - 2007/2/1

N2 - A series of amine-terminated hyperbranched polybenzimidazoles (HBPBIs) were successfully synthesized by condensation polymerization of aromatic dicarboxylic acids and an in situ synthesized aromatic hexamine intermediate product from 1,3,5-benzenetricarboxylic acid (BTA) and 3,3′-diaminobenzidine (DAB) in polyphosphoric acid (PPA) at 190 °C for 20 h. HBPBI membranes were fabricated by solution cast method in the presence of cross-linkers (ethylene glycol diglycidyl ether (EGDE) and terephthaldehyde (TPA)). The resulting HBPBI membranes displayed good mechanical properties and good thermal stability. High proton conductivity was obtained with the phosphoric acid-doped and TPA-cross-linked HBPBI membranes at 0% relative humidity.

AB - A series of amine-terminated hyperbranched polybenzimidazoles (HBPBIs) were successfully synthesized by condensation polymerization of aromatic dicarboxylic acids and an in situ synthesized aromatic hexamine intermediate product from 1,3,5-benzenetricarboxylic acid (BTA) and 3,3′-diaminobenzidine (DAB) in polyphosphoric acid (PPA) at 190 °C for 20 h. HBPBI membranes were fabricated by solution cast method in the presence of cross-linkers (ethylene glycol diglycidyl ether (EGDE) and terephthaldehyde (TPA)). The resulting HBPBI membranes displayed good mechanical properties and good thermal stability. High proton conductivity was obtained with the phosphoric acid-doped and TPA-cross-linked HBPBI membranes at 0% relative humidity.

KW - Hyperbranched polybenzimidazole

KW - Membrane

KW - Proton conductivity

KW - Synthesis

UR - https://www.scopus.com/pages/publications/33846602294

U2 - 10.1016/j.memsci.2006.11.022

DO - 10.1016/j.memsci.2006.11.022

M3 - Article

AN - SCOPUS:33846602294

SN - 0376-7388

VL - 288

SP - 255

EP - 260

JO - Journal of Membrane Science

JF - Journal of Membrane Science

IS - 1-2

ER -

Synthesis of hyperbranched polybenzimidazoles and their membrane formation

Abstract

Keywords

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