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

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Nanocomposites derived from in situ grafting of linear and hyperbranched poly(ether-ketone)s containing flexible oxyethylene spacers onto the surface of multiwalled carbon nanotubes

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dc.contributor.author Jeon, In-Yup ko
dc.contributor.author Tan, Loon-Seng ko
dc.contributor.author Baek, Jong-Beom ko
dc.date.available 2014-09-16T06:57:01Z -
dc.date.created 2014-09-15 ko
dc.date.issued 2008-06 -
dc.identifier.citation JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, v.46, no.11, pp.3471 - 3481 ko
dc.identifier.issn 0887-624X ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/6034 -
dc.identifier.uri http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=44949217385 ko
dc.description.abstract Linear and hyperbranched poly(ether-ketone)s (PEKs) containing flexible oxyethylene spacers grafted multiwalled carbon nanotube (PEK-g-MWNT) nanocomposites were prepared by direct Friedel-Crafts acylation as the polymer forming and grafting reaction. To achieve the composites, in situ polycondensations of AB monomers 3-(2-phenoxyethoxy)benzoic acid (3-PEBA) and 4-(2-phenoxyethoxy)benzoic acid (4-PEBA), and AB 2 monomer 3,5-bis(2-phenoxyethoxy)benzoic acid (3,5-BPEBA) were carried out in the presence of multiwalled carbon nanotubes (MWNTs). The reaction conditions, polyphosphoric acid (PPA) with additional phosphorous phentoxide (P 2O 5) in the temperature range of 110-120 °C, were previously optimized. The conditions were used as the polymerization and grafting medium that were indeed benign not to damage MWNTs but strong enough to promote the covalent attachment of PEKs onto the surface of the electron-deficient MWNTs. From scanning electron microscopy (SEM) and transmission electron microscopy studies, the polymers were uniformly grafted onto the MWNTs. The resultant nanocomposites are soluble in most strong acids such as trifluoroacetic acid, methanesulfonic acid, and sulfuric acid. Both isothermal and dynamic TGA studies in air showed that nanocomposites displayed improved thermo-oxidative stability when compared with those of corresponding PEK homopolymers. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher WILEY-BLACKWELL ko
dc.subject Carbon nanotubes ko
dc.subject Electrophilic substitution reaction ko
dc.subject Hyperbranched ko
dc.subject Nanocomposites ko
dc.subject Poly(ether-ketone)s ko
dc.subject Polycondensation ko
dc.title Nanocomposites derived from in situ grafting of linear and hyperbranched poly(ether-ketone)s containing flexible oxyethylene spacers onto the surface of multiwalled carbon nanotubes ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-44949217385 ko
dc.identifier.wosid 000256390100014 ko
dc.type.rims ART ko
dc.description.wostc 31 *
dc.description.scopustc 32 *
dc.date.tcdate 2015-05-06 *
dc.date.scptcdate 2014-09-15 *
dc.identifier.doi 10.1002/pola.22649 ko
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