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dc.contributor.author유진원-
dc.contributor.author정진-
dc.contributor.author최용문-
dc.contributor.author최재헌-
dc.contributor.author유재상-
dc.contributor.authorJae Kwan Lee-
dc.contributor.author유남호-
dc.contributor.author고문주-
dc.date.accessioned2015-12-16T17:00:08Z-
dc.date.available2015-12-16T17:00:08Z-
dc.date.issued201601-
dc.identifier.citationVOL 7, 36-43-
dc.identifier.issn17599954-
dc.identifier.other45965-
dc.identifier.urihttp://pubs.kist.re.kr/handle/201004/58249-
dc.description.abstractWe synthesized diamine-functionalized graphene oxide, DDS–GO and HMDA–GO, by introducing 4,4’-diaminodiphenyl sulfone (DDS) or hexamethylenediamine (HMDA) into the carboxylic acid groups on graphene oxide (GO) via amide bonds. The introduction of diamines was confirmed by analytical methods such as FT-IR, TG-DTA, XPS, AFM, and optical microscopy. Then, we applied DDS–GO and HMDA–GO as co-curing agents for epoxy (EP) nanocomposites that were prepared by mixing bisphenol-A type EP and DDS curing agent (ca. 21 wt%). Interestingly, when 1.0 wt% of DDS–GO was added to the EP/DDS mixture, the crosslink density (CD) increased from 0.028 to 0.069 mol cm−3. Due to the higher CD, both the glass transition temperature and tensile strength of the EP/DDS/DDS–GO nanocomposite effectively improved from 160.7 °C to 183.4 °C and from 87.4 MPa to 110.3 MPa, respectively.-
dc.publisherPolymer Chemistry-
dc.subjectepoxy-
dc.subjectgraphene-
dc.subjectcuring agent-
dc.subjectglass transition temperature-
dc.subjectresin-
dc.titleEnhancement of the crosslink density, glass transition temperature, and strength of epoxy resin by using functionalized graphene oxide co-curing agents-
dc.typeArticle-
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