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Polymer Bulletin
Erschienen in: Polymer Bulletin 7/2020

25.11.2019 | Original Paper

RAFT polymerization of styrene mediated by naphthyl-functionalized trithiocarbonate RAFT agents

verfasst von: Gabriel J. Summers, Thembinkosi S. Mdletshe, Carol A. Summers

Erschienen in: Polymer Bulletin | Ausgabe 7/2020

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Abstract

Three new naphthyl-functionalized trithiocarbonate RAFT agents, ethyl 1-naphthylmethyltrithiocarbonate, butyl 1-naphthylmethyltrithiocarbonate and dodecyl 1-naphthylmethyltrithiocarbonate, were prepared and employed as chain transfer agents in RAFT polymerization reactions. The RAFT polymerization of styrene, mediated by the different naphthyl-functionalized trithiocarbonate RAFT agents, with AIBN as the initiator at 75 °C proceeded via a controlled/living polymerization process to produce quantitative yields of α-naphthyl-functionalized polymers with the naphthyl group introduced at the α-terminus of the polymer chain. Ultraviolet visible spectroscopy and fluorescence spectroscopy data provide evidence for the incorporation of the naphthyl group at the α-terminus of the polymer chain. Polymer kinetic measurements show that each polymerization reaction follows first-order rate kinetics with respect to monomer consumption and the number average molecular weights increase linearly with monomer conversion to produce polymers with narrow molecular weight distributions. The percentage monomer conversion for each reaction was monitored by 1H NMR spectroscopy. The naphthyl-functionalized trithiocarbonate chain transfer agents and the α-naphthyl-functionalized polymers were characterized by 1H and 13C NMR spectroscopy, FTIR spectroscopy, size exclusion chromatography, ultraviolet visible spectroscopy and fluorescence spectroscopy.

Graphic abstract

The AIBN-initiated RAFT polymerization of styrene, mediated by new alkyl 1-naphthylmethyltrithiocarbonate RAFT agents at 75 °C proceeded via controlled/living polymerization processes to produce quantitative yields of α-naphthyl-functionalized polymers with the naphthyl group introduced at the α-terminus of the polymer chain.
Vorheriger Artikel Impact and thermal analysis of heat-treated and untreated mangrove wood/high-density polyethylene composites
Nächster Artikel Fabrication of nanofibers using fibroin regenerated by recycling waste silk selvage

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Metadaten
Titel
RAFT polymerization of styrene mediated by naphthyl-functionalized trithiocarbonate RAFT agents
verfasst von
Gabriel J. Summers
Thembinkosi S. Mdletshe
Carol A. Summers
Publikationsdatum
25.11.2019
Verlag
Springer Berlin Heidelberg
Erschienen in
Polymer Bulletin / Ausgabe 7/2020
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-019-03011-7

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