SAN-b-P4VP block copolymer synthesis by chain extension from RAFT-functional poly(4-vinylpyridine) in solution and in emulsion

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dc.contributor.authorBozovic-Vukic J.
dc.contributor.authorManon H.T.
dc.contributor.authorMeuldijk J.
dc.contributor.authorKoning C.
dc.contributor.authorKlumperman B.
dc.date.accessioned2011-05-15T15:59:55Z
dc.date.available2011-05-15T15:59:55Z
dc.date.issued2007
dc.description.abstractReversible addition fragmentation chain transfer (RAFT)-mediated polymerization was successfully applied for the synthesis of poly(4-vinylpyridine) (P4VP) polymers of predetermined molar mass and of low polydispersity index. These RAFT end-functionalized polymers were then used as macro-RAFT agents and further chain extended with an azeotropic mixture of styrene (STY) and acrylonitrile (AN) (63 mol% STY). Initially, these chain extension experiments were carried out in solution. In that case, the formation of the P4VP-b-SAN block copolymers clearly demonstrated the large fraction of chain end functionality in these RAFT-functional P4VP polymers. Proof of the formation of low molar mass P4VP-b-SAN block copolymer was obtained by using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) analysis. Gradient polymer elution chromatographic (GPEC) analysis confirmed successful formation of P4VP-b-SAN block copolymers. Block copolymer synthesis in emulsion was also investigated. The polymerization mediated by a RAFT-functional P4VP, macro-RAFT agent, was carried out as a semicontinuous process. The complete transformation of the P4VP starting block into P4VP-b-SAN block copolymer points to an efficient control of the polymerization in emulsion. This procedure leads to the formation of a colloidally stable latex. The results of GPEC analysis confirmed the successful block copolymer latex formation. © 2007 American Chemical Society.
dc.description.versionArticle
dc.identifier.citationMacromolecules
dc.identifier.citation40
dc.identifier.citation20
dc.identifier.issn249297
dc.identifier.other10.1021/ma070789z
dc.identifier.urihttp://hdl.handle.net/10019.1/11436
dc.subjectAzeotropes
dc.subjectEmulsion polymerization
dc.subjectLatexes
dc.subjectMolar mass
dc.subjectPolydispersity
dc.subjectSynthesis (chemical)
dc.subjectChain extension
dc.subjectGradient polymer elution chromatographic (GPEC)
dc.subjectLatex formation
dc.subjectMatrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS)
dc.subjectBlock copolymers
dc.titleSAN-b-P4VP block copolymer synthesis by chain extension from RAFT-functional poly(4-vinylpyridine) in solution and in emulsion
dc.typeArticle
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