Synthesis and properties of novel polyimides bearing sulfonated benzimidazole pendant groups

Yolanda Álvarez-Gallego; Suzana Pereira Nunes; Angel E. Lozano; José G. De La Campa; Javier De Abajo

doi:10.1002/marc.200600700

Synthesis and properties of novel polyimides bearing sulfonated benzimidazole pendant groups

Yolanda Álvarez-Gallego^*, Suzana Pereira Nunes, Angel E. Lozano, José G. De La Campa, Javier De Abajo

^*Corresponding author for this work

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

26 Scopus citations

Abstract

A new diamine monomer containing benzimidazole-5-sulfonic acid has been synthesised. It has been reacted, alone or mixed with diaminodiphenyl ether, with naphthalenic dianhydride to attain polynaphthalimides in which the sulfonic acid functionality is borne by pendant benzimidazole groups. The presence of sulfonic and benzimidazole groups greatly affected the physical properties of the polyimides as the novel polymers were found to be soluble in polar organic solvents and exhibited a lower thermal resistance than their non-sulfonated counterparts. The polymer films exhibited good mechanical properties with tensile strength in the range 100-120 MPa and with moduli in the range 2.2-3.1 GPa. Sulfonic and benzimidazole groups significantly enhanced the hydrophilicity of the copolyimides, which showed water uptake up to 39%.

Original language	English (US)
Pages (from-to)	616-622
Number of pages	7
Journal	Macromolecular Rapid Communications
Volume	28
Issue number	5
DOIs	https://doi.org/10.1002/marc.200600700
State	Published - Mar 1 2007
Externally published	Yes

Keywords

Fuel cells
Monomers
Polyimides
Sulfonated benzimidazole
Synthesis

ASJC Scopus subject areas

Materials Chemistry
Polymers and Plastics
Organic Chemistry

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10.1002/marc.200600700

Cite this

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title = "Synthesis and properties of novel polyimides bearing sulfonated benzimidazole pendant groups",

abstract = "A new diamine monomer containing benzimidazole-5-sulfonic acid has been synthesised. It has been reacted, alone or mixed with diaminodiphenyl ether, with naphthalenic dianhydride to attain polynaphthalimides in which the sulfonic acid functionality is borne by pendant benzimidazole groups. The presence of sulfonic and benzimidazole groups greatly affected the physical properties of the polyimides as the novel polymers were found to be soluble in polar organic solvents and exhibited a lower thermal resistance than their non-sulfonated counterparts. The polymer films exhibited good mechanical properties with tensile strength in the range 100-120 MPa and with moduli in the range 2.2-3.1 GPa. Sulfonic and benzimidazole groups significantly enhanced the hydrophilicity of the copolyimides, which showed water uptake up to 39%.",

keywords = "Fuel cells, Monomers, Polyimides, Sulfonated benzimidazole, Synthesis",

author = "Yolanda {\'A}lvarez-Gallego and Nunes, {Suzana Pereira} and Lozano, {Angel E.} and {De La Campa}, {Jos{\'e} G.} and {De Abajo}, Javier",

year = "2007",

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doi = "10.1002/marc.200600700",

language = "English (US)",

volume = "28",

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journal = "Macromolecular Rapid Communications",

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TY - JOUR

T1 - Synthesis and properties of novel polyimides bearing sulfonated benzimidazole pendant groups

AU - Álvarez-Gallego, Yolanda

AU - Nunes, Suzana Pereira

AU - Lozano, Angel E.

AU - De La Campa, José G.

AU - De Abajo, Javier

PY - 2007/3/1

Y1 - 2007/3/1

N2 - A new diamine monomer containing benzimidazole-5-sulfonic acid has been synthesised. It has been reacted, alone or mixed with diaminodiphenyl ether, with naphthalenic dianhydride to attain polynaphthalimides in which the sulfonic acid functionality is borne by pendant benzimidazole groups. The presence of sulfonic and benzimidazole groups greatly affected the physical properties of the polyimides as the novel polymers were found to be soluble in polar organic solvents and exhibited a lower thermal resistance than their non-sulfonated counterparts. The polymer films exhibited good mechanical properties with tensile strength in the range 100-120 MPa and with moduli in the range 2.2-3.1 GPa. Sulfonic and benzimidazole groups significantly enhanced the hydrophilicity of the copolyimides, which showed water uptake up to 39%.

AB - A new diamine monomer containing benzimidazole-5-sulfonic acid has been synthesised. It has been reacted, alone or mixed with diaminodiphenyl ether, with naphthalenic dianhydride to attain polynaphthalimides in which the sulfonic acid functionality is borne by pendant benzimidazole groups. The presence of sulfonic and benzimidazole groups greatly affected the physical properties of the polyimides as the novel polymers were found to be soluble in polar organic solvents and exhibited a lower thermal resistance than their non-sulfonated counterparts. The polymer films exhibited good mechanical properties with tensile strength in the range 100-120 MPa and with moduli in the range 2.2-3.1 GPa. Sulfonic and benzimidazole groups significantly enhanced the hydrophilicity of the copolyimides, which showed water uptake up to 39%.

KW - Fuel cells

KW - Monomers

KW - Polyimides

KW - Sulfonated benzimidazole

KW - Synthesis

UR - http://www.scopus.com/inward/record.url?scp=34547861294&partnerID=8YFLogxK

U2 - 10.1002/marc.200600700

DO - 10.1002/marc.200600700

M3 - Article

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SN - 1022-1336

VL - 28

SP - 616

EP - 622

JO - Macromolecular Rapid Communications

JF - Macromolecular Rapid Communications

IS - 5

ER -

Synthesis and properties of novel polyimides bearing sulfonated benzimidazole pendant groups

Abstract

Keywords

ASJC Scopus subject areas

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