Prasad, A. V.; Oh, B. Y. A.; Woo, Y. L.; Stubbs, L. P.; Zhu, Y. H., Synthesis and new application of green and recyclable cyclic poly(L-lactide)-clay hybrid. Journal of Polymer Science Part A: Polymer Chemistry 2013, 51, (19), p 4167-4174.
Abstract:
We report on the application of biodegradable cyclic poly(L-lactide) (PLLA) as new stabilizer; synthesis and application of a cyclic PLLA-clay hybrid material as recyclable catalyst support. Cyclic PLLAs were used to stabilize palladium nanoparticles synthesized by a wet chemical method. It was found that the palladium particles were smaller with cyclic PLLA stabilizer (∼5–10 nm) than the particles obtained from linear PLLA. The cyclic PLLA-clay hybrid was prepared by a zwitterionic ring-opening polymerization catalyzed by in situ-generated N-heterocyclic carbene catalyst. Palladium (0) nanoparticles were supported and well dispersed on the cyclic PLLA-clay hybrid to form a new nanocomposite. The nanocomposite was found to be a highly efficient and recyclable catalyst for the aminocarbonylation reactions of aryl halides with various amines.
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Funding Info:
This work was funded by the Institute of Chemical and Engineering Sciences, Agency for Science, Technology, and Research, Singapore, and “Singapore-EDB-GSK Partnership for Green and Sustainable Manufacture”.
Description:
This is the peer reviewed version of the following article: Prasad, A. V.; Oh, B. Y. A.; Woo, Y. L.; Stubbs, L. P.; Zhu, Y. H., Synthesis and new application of green and recyclable cyclic poly(L-lactide)-clay hybrid. Journal of Polymer Science Part A: Polymer Chemistry 2013, 51, (19), p 4167-4174., which has been published in final form at http://dx.doi.org/10.1002/pola.26829. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.