Journal
POLYMER CHEMISTRY
Volume 12, Issue 39, Pages 5640-5649Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1py00728a
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In this study, a robust and straightforward synthesis of surfactant-free poly(vinylidene fluoride) (PVDF) latexes was demonstrated using RAFT/MADIX-mediated emulsion polymerization. Different stabilization modes were carefully examined in VDF emulsion polymerizations conducted in the presence of commercial poly(ethylene glycol) chains (PEG-OH) and those carrying a dithiocarbonate (xanthate) chain end (PEG-X). The use of PEG-X resulted in significantly smaller particle size, indicating a positive effect on particle stabilization compared to PEG-OH.
A robust and straightforward synthesis of surfactant-free poly(vinylidene fluoride) (PVDF) latexes is presented using RAFT/MADIX-mediated emulsion polymerization. VDF emulsion polymerizations were conducted in the presence of commercial poly(ethylene glycol) chains (PEG-OH) and in the presence of the same chains carrying a dithiocarbonate (xanthate) chain end (PEG-X). The identification of the stabilization mode in both cases is carefully examined, considering the irreversible chain transfer reactions well known in VDF free radical polymerization. The particle size is significantly smaller when PEG-X was used, demonstrating the positive effect on particle stabilization of the involvement of xanthate chain end in the free radical process.
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