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Free-Radical Polymerization of Acrylic Acid under Extreme Reaction Conditions Mimicking Deep-Sea Hydrothermal Vents
journal contribution
posted on 2017-06-19, 08:14 authored by Keigo Kinoshita, Yoshinori Takano, Naohiko Ohkouchi, Shigeru DeguchiFree-radical polymerization with
a thermochemical initiator, which
usually takes hours to complete, was dramatically accelerated under
reaction conditions mimicking the deep-sea hydrothermal vents, where
reaction mixtures were only briefly exposed to ultrahigh temperatures
under pressure. In tests using acrylic acid and potassium persulfate,
poly(acrylic acid) (Mn = 2.1 × 104, Đ = 2.73) was obtained in 5.2 s with
the monomer conversion of 60.3% in water at 200 °C and 25 MPa
without using any catalysts. The process that we call heat-shock-induced
polymerization may pave the way for an entirely new strategy in reaction
engineering for developing extremely fast, green, and scalable processes
for polymer synthesis.
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reaction conditionspotassium persulfatescalable processeshydrothermal ventsthermochemical initiatorultrahigh temperatures25 MPaExtreme Reaction Conditions Mimicking Deep-Sea Hydrothermal Vents Free-radical polymerizationreaction engineeringFree-Radical PolymerizationM nmonomer conversionacrylic acidheat-shock-induced polymerizationpolymer synthesisreaction mixtures
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