Polymerization of A2 with B3 monomers: A facile approach to hyperbranched poly(aryl ester)s

Qin Lin, Timothy Edward Long*

*この研究の対応する著者

研究成果: Article査読

130 被引用数 (Scopus)

抄録

Hyperbranched polymers have received significant attention due to their unique combination of low viscosity, excellent solubility, and facile synthesis. This paper describes an efficient approach to hyperbranched poly(aryl ester)s via the polycondensation of A2 and B3 monomers. A dilute bisphenol A (A2) solution was added slowly to a dilute 1,3,5-benzenetricarbonyl trichloride (B3) solution at 25°C to prepare hyperbranched poly(aryl ester)s in the absence of gelation. The molar ratio of A2:B3 was maintained at 1:1, and the maximum final monomer concentration was ∼0.08 M. 1H NMR spectroscopy and derivitization of terminal groups indicated that the phenol functionalities were quantitatively consumed during the polycondensation. Two model compounds were synthesized to identify 1H NMR resonances for linear, dendritic, and terminal units, and the final degree of branching was determined to be ∼50%. Moreover, the hyperbranched polymers exhibited lower glass transition temperatures relative to their linear analogues.

本文言語English
ページ(範囲)9809-9816
ページ数8
ジャーナルMacromolecules
36
26
DOI
出版ステータスPublished - 2003 12月 30
外部発表はい

ASJC Scopus subject areas

  • 材料化学

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