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dc.contributor.authorMa, Sungwonen_US
dc.date.accessioned2010-09-15T19:04:06Z
dc.date.available2010-09-15T19:04:06Z
dc.date.issued2010-06-23en_US
dc.identifier.urihttp://hdl.handle.net/1853/34769
dc.description.abstractNanostructures and properties of blends of homopolymer and elastomeric block copolymer nanoparticles were studied focusing on the effect of morphology and the viscoelastic properties on blends. The cylindrical and lamellar morphology of PS-b-PI copolymer was employed to generate the morphology of elastomeric nanoparticles such as nanofiber and nanosheet. The particles were synthesized using cold vulcanization process. The vulcanization process using sulfur monochloride (S2Cl2) was used to preserve the morphologies. The crosslinking density of block copolymer was controlled by exposure time of crosslinking agent in the chamber. The blend samples for DMA and rheometer were prepared using solvent casting process. The diameter and thickness of nanofiber and nanosheet obtained by the process were ~40 nm and ~70 nm, respectively. The rheological and dynamic mechanical properties of the blends of polystyrene (PS) and elastomeric nanoparticles were studied in terms of morphology and crosslinking density. The effect of core PI size also investigated and discussed. Based on these viscoelastic results, the theoretical percolation threshold was calculated and compared with experimental results. It is demonstrated that block copolymer is a facile method to generate elastomeric nanoparticles using cold vulcanization and viscoelastic properties can be tuned with addition of nanoparticles.en_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectNanoparticleen_US
dc.subjectBlenden_US
dc.subjectElastomeren_US
dc.subjectMechanical propertyen_US
dc.subjectCold vulcanizationen_US
dc.subject.lcshNanoparticles
dc.subject.lcshElastomers
dc.subject.lcshBlock copolymers
dc.titleNanostructures and properties of blends of homopolymer and elastomeric block copolymer nanoparticlesen_US
dc.typeDissertationen_US
dc.description.degreePh.D.en_US
dc.contributor.departmentPolymer, Textile and Fiber Engineeringen_US
dc.description.advisorCommittee Chair: Thio, Yonathan; Committee Member: Griffin, Anselm; Committee Member: Bucknall, David G.; Committee Member: Jang, Seung Soon; Committee Member: Tsukruk, Vladmiren_US


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