Synthesis of Hyperbranched Polyacrylates by a Chloroinimer ApproachMacromolecules
Abstract(2-Chloro-2-alkoxycarbonyl)ethyl acrylates with methyl, dodecyl, perfluoroalkyl, siloxane, oligooxyethylene, and mesogenic ester substituents were synthesized as inimers for self-condensing vinyl polymerization (SCVP) to produce hyperbranched polyacrylates. The inimers were polymerized by atom transfer radical polymerization under a variety of conditions to produce soluble polymers with broad polydispersities (up to PDI = 5.24) characteristic of hyperbranched polymers, although the isolated polymers had narrower polydispersities. The molecular weight distribution was followed as a function of time and inimer conversion for the polymerization of the mesogenic inimer. The first-order inimer conversion was linear with time. The buildup of a hyperbranched structure during the SCVP was confirmed by comparison of the error in the GPCPSt-determined molecular weights of the mesogenic polymer with those of the corresponding linear, three-arm star, and comb architectures.
Citation InformationColeen Pugh, Anirudha Singh, Reichel Samuel and Karla M. Bernal Ramos. "Synthesis of Hyperbranched Polyacrylates by a Chloroinimer Approach" Macromolecules Vol. 43 Iss. 12 (2010) p. 5222 - 5232
Available at: http://works.bepress.com/coleen_pugh/14/