Sonochemically Initiated RAFT Polymerization in Organic Solvents
Joe Collins, Thomas G McKenzie, Mitchell D Nothling, Stephanie Allison-Logan, Muthupandian Ashokkumar, Greg G Qiao
MACROMOLECULES | AMER CHEMICAL SOC | Published : 2019
Sonochemically initiated RAFT polymerization (sonoRAFT) in organic solvents is presented for the first time. Acoustic cavitation, induced by high-frequency ultrasound (US) (490 kHz), caused pyrolysis of organic solvent molecules providing a source of initiating radicals. In this way, polymers could be prepared without conventional radical initiators (e.g., AIBN) or additives (e.g., piezoelectric nanoparticles). The polymerization of acrylates and acrylamides was well controlled with the prepared polymers displaying good agreement between theoretical and experimental molecular weights with low dispersities. Methacrylates were found to be less controlled. Several factors were found to influenc..View full abstract
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Awarded by Australian Research Council via an ARC-DP
M.A. acknowledges financial support from the Australian Research Council via an ARC-DP (DP160102908).