Related Researcher

Author's Photo

Baek, Jong-Beom
Center for Dimension-Controllable Organic Frameworks
Research Interests
  • Covalent Organic Frameworks (COFs), Carbon Nanotubes(CNTs), graphene, Energy Conversion and Storage


Multifunctional Poly(2,5-benzimidazole)/Carbon Nanotube Composite Films

DC Field Value Language Kang, Ji-Ye ko Eo, Soo-Mi ko Jeon, In-Yup ko Chioi, Yeong Suk ko Tan, Loon-Seng ko Baek, Jong-Beom ko 2014-04-10T01:34:36Z - 2013-06-13 ko 2010-03 -
dc.identifier.citation JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, v.48, no.5, pp.1067 - 1078 ko
dc.identifier.issn 0887-624X ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract The AB-monomer, 3,4-diaminobenzoic acid dihydrochloride, was recrystallized from an aqueous hydrochloric acid solution and used to synthesize high-molecular-weight poly(2,5-benzimidazole) (ABPBI). ABPBI/carbon nanotube (CNT) composites were prepared via in situ polymerization of the AB-monomer in the presence of single-walled carbon nanotube (SWCNT) or multiwalled carbon nanotube (MWCNT) in a mildly acidic polyphosphoric acid. The ABPBI/SWCNT and ABPBI/MWCNT composites displayed good solubility in methanesulfonic acid and thus, uniform films could be cast. The morphology of these composite films was studied by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and atomic force microscopy. The results showed that both types of CNTs were uniformly dispersed into the ABPBI matrix. Tensile properties of the composite films were significantly improved when compared with ABPBI, and their toughness (similar to 200 MPa) was close to the nature's toughest spider silk (similar to 215 MPa). The electrical conductivities of ABPBI/SWCNT and ABPBI/MWCNT composite films were 9.10 x 10(-5) and 2.53 x 10(-1) S/cm, respectively, whereas that of ABPBI film was 4.81 X 10(-6) S/cm. These values are similar to 19 and 52,700 times enhanced by the presence of SWCNT and MWCNT, respectively. Finally, without acid impregnation, the ABPBI film was nonconducting while the SWCNT- and MWCNT-based composites were proton conducting with maximum conductivities of 0.018 and 0.017 S/cm, respectively. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher JOHN WILEY & SONS INC ko
dc.subject Benzimidazoles ko
dc.subject High performance polymer ko
dc.subject High-performance polymers ko
dc.subject In-situ polymerization ko
dc.subject Poly (phosphoric acid) ko
dc.subject Poly(2,5-benzimidazole) ko
dc.title Multifunctional Poly(2,5-benzimidazole)/Carbon Nanotube Composite Films ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-76249111994 ko
dc.identifier.wosid 000274942000008 ko
dc.type.rims ART ko
dc.description.wostc 8 *
dc.description.scopustc 8 * 2014-10-18 * 2014-07-12 *
dc.identifier.doi 10.1002/pola.23862 ko
Appears in Collections:
ECHE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show simple item record


  • mendeley


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.