Synthesis of hyperbranched polyacrylates by a chloroinimer approach

Coleen Pugh, Anirudha Singh, Reichel Samuel, Karla M. Bernal Ramos

Research output: Contribution to journalArticle

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.

Original languageEnglish (US)
Pages (from-to)5222-5232
Number of pages11
JournalMacromolecules
Volume43
Issue number12
DOIs
StatePublished - Jun 22 2010
Externally publishedYes

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Polyacrylates
Polymers
Polymerization
Polydispersity
Siloxanes
Atom transfer radical polymerization
Molecular weight distribution
Stars
Esters
Molecular weight

ASJC Scopus subject areas

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry

Cite this

Synthesis of hyperbranched polyacrylates by a chloroinimer approach. / Pugh, Coleen; Singh, Anirudha; Samuel, Reichel; Bernal Ramos, Karla M.

In: Macromolecules, Vol. 43, No. 12, 22.06.2010, p. 5222-5232.

Research output: Contribution to journalArticle

Pugh, Coleen ; Singh, Anirudha ; Samuel, Reichel ; Bernal Ramos, Karla M. / Synthesis of hyperbranched polyacrylates by a chloroinimer approach. In: Macromolecules. 2010 ; Vol. 43, No. 12. pp. 5222-5232.
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AB - (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.

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