Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/70576
DC FieldValueLanguage
dc.contributor.authorLin, J.J.en_US
dc.contributor.authorHsu, Y.C.en_US
dc.contributor.authorChou, C.C.en_US
dc.date2003zh_TW
dc.date.accessioned2014-06-11T06:00:02Z-
dc.date.available2014-06-11T06:00:02Z-
dc.identifier.issn0743-7463zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/70576-
dc.description.abstractA novel class of surfactants was prepared from the ionic exchange reaction of sodium montmorillonite (MMT) and a comb-branch shape of maleated polypropylene (MPP) derived copolymers consisting of pendent quaternary ammonium salts, polyoxyalkylene linkers, and a polypropylene (PP) backbone. The hybrid surfactant is composed of a hydrophilic silicate core and a hydrophobic PP corona. In the silicate core, there are approximately 6-10 silicate layers which are intercalated by multiple ammonium salts of the copolymer at d spacing of 19 Angstrom. Surrounding the core, the flexible PP strains contribute to the hydrophobic property in balancing with the hydrophilic silicates to form a water-in-oil (W/O) type cluster structure. When using 2000 g/mol molecular weight poly(oxyethylene)amine, the copolymer (MPP-POE2000) intercalated MMT hybrid was found to be dispersed well in toluene at an average 570-580 nm particle diameter. The aggregated particles exhibited an ability of lowering the toluene/water interfacial tension until 5.0 mN/m at a critical concentration of 0.01 wt %. The aggregated particle size is indifferent to the temperature change in the range 25-75 degreesC, implying the unusual thermal stability of the MMT-template hybrid surfactants and possibly the presence of a single-molecular surfactant micelle with the MMT primary particle as the central hydrophilic core.en_US
dc.language.isoen_USzh_TW
dc.relationLangmuiren_US
dc.relation.ispartofseriesLangmuir, Volume 19, Issue 13, Page(s) 5184-5187.en_US
dc.relation.urihttp://dx.doi.org/10.1021/la0340221en_US
dc.subjectpolypropylene copolymersen_US
dc.subjectmicelle formationen_US
dc.subjectblock-copolymersen_US
dc.subjectwateren_US
dc.subjectnanocompositesen_US
dc.subjectxyleneen_US
dc.titleCopolymer-layered silicate hybrid surfactants from the intercalation of montmorillonite with amphiphilic copolymersen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1021/la0340221zh_TW
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypeJournal Article-
item.cerifentitytypePublications-
item.fulltextno fulltext-
item.languageiso639-1en_US-
item.grantfulltextnone-
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