Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/70639
DC FieldValueLanguage
dc.contributor.authorLin, J.J.en_US
dc.contributor.authorChan, Y.N.en_US
dc.contributor.authorLan, Y.F.en_US
dc.date2010zh_TW
dc.date.accessioned2014-06-11T06:00:07Z-
dc.date.available2014-06-11T06:00:07Z-
dc.identifier.issn1996-1944zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/70639-
dc.description.abstractRecent studies on the intercalation and exfoliation of layered clays with polymeric intercalating agents involving poly(oxypropylene)-amines and the particular uses for epoxy nanocomposites are reviewed. For intercalation, counter-ionic exchange reactions of clays including cationic layered silicates and anionic Al-Mg layered double hydroxide (LDH) with polymeric organic ions afforded organoclays led to spatial interlayer expansion from 12 to 92 angstrom (X-ray diffraction) as well as hydrophobic property. The inorganic clays of layered structure could be modified by the poly(oxypropylene) amine-salts as the intercalating agents with molecular weights ranging from 230 to 5,000 g/mol. Furthermore, natural montmorillonite (MMT) clay could be exfoliated into thin layer silicate platelets (ca. 1 nm thickness) in one step by using polymeric types of exfoliating agents. Different lateral dimensions of MMT, synthetic fluorinated Mica and LDH clays had been cured into epoxy nanocomposites. The hydrophobic amine-salt modification resulting in high spacing of layered or exfoliation of individual clay platelets is the most important factor for gaining significant improvements of properties. In particular, these modified clays were reported to gain significant improvements such as reduced coefficient of thermal expansion (CTE), enhanced thermal stability, and hardness. The utilization of these layered clays for initiating the epoxy self-polymerization was also reported to have a unique compatibility between clay and organic resin matrix. However, the matrix domain lacks of covalently bonded crosslink and leads to the isolation of powder material. It is generally concluded that the hydrophobic expansion of the clay inter-gallery spacing is the crucial step for enhancing the compatibility and the ultimate preparation of the advanced epoxy materials.en_US
dc.language.isoen_USzh_TW
dc.relationMaterialsen_US
dc.relation.ispartofseriesMaterials, Volume 3, Issue 4, Page(s) 2588-2605.en_US
dc.relation.urihttp://dx.doi.org/10.3390/ma3042588en_US
dc.subjectlayered silicatesen_US
dc.subjectclayen_US
dc.subjectepoxyen_US
dc.subjectnanocompositeen_US
dc.subjectcompatibilityen_US
dc.subjectpolymer/layered silicate nanocompositesen_US
dc.subjectdouble hydroxidesen_US
dc.subjectclay/epoxyen_US
dc.subjectnanocompositesen_US
dc.subjectmodified montmorilloniteen_US
dc.subjectconformational-changeen_US
dc.subjectmechanical-propertiesen_US
dc.subjectself-polymerizationen_US
dc.subjectthermal-stabilityen_US
dc.subjectfineen_US
dc.subjectdispersionen_US
dc.subjectsmectite claysen_US
dc.titleHydrophobic Modification of Layered Clays and Compatibility for Epoxy Nanocompositesen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.3390/ma3042588zh_TW
item.fulltextno fulltext-
item.languageiso639-1en_US-
item.openairetypeJournal Article-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextnone-
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