Encapsulated clay particles in polystyrene by RAFT mediated miniemulsion polymerization
dc.contributor.author | Samakande A. | |
dc.contributor.author | Sanderson R.D. | |
dc.contributor.author | Hartmann P.C. | |
dc.date.accessioned | 2011-05-15T16:03:41Z | |
dc.date.available | 2011-05-15T16:03:41Z | |
dc.date.issued | 2008 | |
dc.description.abstract | RAFT grafted montmorillonite (MMT) clays [i.e., N,N-dimethyl-N-(4- (((phenylcarbonothioyl)thio)methyl)benzyl)ethanammonium-MMT (PCDBAB-MMT) and N-(4-((((dodecylthio)carbonothioyl)thio)methyl)benzyl)-N,N- dimethylethanammonium-MMT (DCTBAB-MMT)] of various loadings were dispersed in styrene (S) monomer and the resultant mixtures emulsified and sonicated in the presence of a hydrophobe (hexadecane) into miniemulsions. The stable miniemulsions thus obtained were polymerized to yield encapsulated polystyrene-clay nanocomposites (PS-CNs). The molar mass and polydispersity index (PDI) of the PS-CNs depended on the amount of RAFT agent in the system, in accordance with the features of the RAFT process. The morphology of the PS-CNs ranged from partially exfoliated to an intercalated morphology, depending on the percentage clay loading. The thermomechanical properties of the PS-CNs were better than those of the neat PS polymer, and were dependent on the molar mass, PS-CN morphology and clay loading. The similarities and differences of the PS-CNs prepared here by miniemulsion polymerization were compared to those prepared using the same RAFT agents and polymer system by bulk polymerization (as reported by us in a previous article). © 2008 Wiley Periodicals, Inc. | |
dc.description.version | Article | |
dc.identifier.citation | Journal of Polymer Science, Part A: Polymer Chemistry | |
dc.identifier.citation | 46 | |
dc.identifier.citation | 21 | |
dc.identifier.issn | 0887624X | |
dc.identifier.other | 10.1002/pola.23016 | |
dc.identifier.uri | http://hdl.handle.net/10019.1/12733 | |
dc.subject | ABS resins | |
dc.subject | Agents | |
dc.subject | Chemical reactions | |
dc.subject | Emulsification | |
dc.subject | Free radical polymerization | |
dc.subject | Loading | |
dc.subject | Monomers | |
dc.subject | Nanocomposites | |
dc.subject | Nanostructured materials | |
dc.subject | Paraffins | |
dc.subject | Polydispersity | |
dc.subject | Polyethylene terephthalates | |
dc.subject | Polymer matrix composites | |
dc.subject | Polymerization | |
dc.subject | Polymers | |
dc.subject | Polystyrenes | |
dc.subject | Semiconductor quantum dots | |
dc.subject | Silicate minerals | |
dc.subject | Styrene | |
dc.subject | Bulk polymerizations | |
dc.subject | Clay loadings | |
dc.subject | Clay nanocomposites | |
dc.subject | Clay particles | |
dc.subject | Dodecylthio | |
dc.subject | Hexadecane | |
dc.subject | Mini emulsions | |
dc.subject | Miniemulsion polymerizations | |
dc.subject | Molar mass distribution | |
dc.subject | Montmorillonite clays | |
dc.subject | Polydispersity indices | |
dc.subject | Polymer systems | |
dc.subject | Raft agents | |
dc.subject | Raft processes | |
dc.subject | Reversible addition fragmentation chain transfer (RAFT) | |
dc.subject | Structure-property relationships | |
dc.subject | Thermo-mechanical properties | |
dc.subject | Clay minerals | |
dc.title | Encapsulated clay particles in polystyrene by RAFT mediated miniemulsion polymerization | |
dc.type | Article |