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dc.contributor.author배영찬-
dc.date.accessioned2016-10-28T01:40:48Z-
dc.date.available2016-10-28T01:40:48Z-
dc.date.issued2015-04-
dc.identifier.citationSOFT MATTER, v. 11, NO 19, Page. 3936-3945en_US
dc.identifier.issn1744-683X-
dc.identifier.issn1744-6848-
dc.identifier.urihttp://pubs.rsc.org/en/Content/ArticleLanding/2015/SM/C5SM00448A#!divAbstract-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/23970-
dc.description.abstractThe influence of co-solvents on the swelling behavior of tunable thermosensitive core-shell nanoparticle gels was investigated. The poly(methyl methacrylate) (PMMA) core and poly(2-hydroxyethyl methacrylate) (PHEMA) shell network in 1-propanol reacted differently upon the addition of three co-solvents (cyclohexane (CHX), 1,3-propanediol (PDO), and water), resulting in highly controllable swelling properties of the core-shell gels. In particular, a strongly enhanced solvation effect, called the cosolvency phenomenon, occurred even with a very small amount of water (1-3 wt%). To examine the tunability, thermo-optical analysis (TOA) and photon correlation spectroscopy (PCS) were employed. The results show that a small addition of CHX, PDO, or water induced the "lower/upper,'' "even/upper,'' and "lower/lower'' volume transition temperatures (VTTs) of the core-shell networks, respectively. For theoretical treatment, a multi-component lattice theory of mixing was combined with the Flory-Rehner (F-R) chain model to calculate the net free energy of mixing. The required interaction parameters were obtained from the binary and ternary phase diagrams of the linear polymer solutions and were applied directly to the swelling calculation of the cross-linked core-shell network solutions. The calculated results corresponded well with the experimental swelling data without further adjustment.en_US
dc.description.sponsorshipThis research was supported by the Engineering Development Research Center (EDRC) funded by the Ministry of Trade, Industry & Energy (MOTIE) (No. N0000990).en_US
dc.language.isoenen_US
dc.publisherROYAL SOC CHEMISTRYen_US
dc.subjectBINARY POLYMER-SOLUTIONSen_US
dc.subjectDOUBLE-LATTICE MODELen_US
dc.subjectANGLE X-RAYen_US
dc.subjectSWELLING BEHAVIORSen_US
dc.subjectSTATISTICAL-MECHANICSen_US
dc.subjectPHASE-TRANSITIONen_US
dc.subjectMIXED-SOLVENTSen_US
dc.subjectDRUG-DELIVERYen_US
dc.subjectMICROGELSen_US
dc.subjectHYDROGELSen_US
dc.titleA cosolvency effect on tunable thermosensitive core-shell nanoparticle gelsen_US
dc.typeArticleen_US
dc.relation.no19-
dc.relation.volume11-
dc.identifier.doi10.1039/c5sm00448a-
dc.relation.page3936-3945-
dc.relation.journalSOFT MATTER-
dc.contributor.googleauthorLee, Sang Min-
dc.contributor.googleauthorBae, Young Chan-
dc.relation.code2015000972-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF CHEMICAL ENGINEERING-
dc.identifier.pidycbae-
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COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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