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Ring-Opening Polymerization of Cyclic Esters onto Liquefied Biomass

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Abstract

Ring-opening polymerization of cyclic esters (ɛ-caprolactone, δ-valerolactone, and l-lactide) onto liquefied biomass (LB) was conducted to obtain the polyester-type polyol and to regulate the characteristics of LB. IR and 1H-NMR spectra of the obtained polyol showed that the polymerization was successfully conducted in the presence of acid catalyst, which is used in liquefaction. The molecular weight (Mw), hydroxyl value, and viscosity were controllable by changing the reaction conditions. Polyester-type polyurethane foams with a wide range of properties were prepared from the obtained polyol with the appropriate combinations of foaming agents.

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Authors and Affiliations

  1. GreenBio Institute, Shimogamo Morimotocho 10, Sakyo-ku, Kyoto, 606–0805, Japan

    Seung-Hwan Lee & Tsutomu Ohkita

Authors
  1. Seung-Hwan Lee
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  2. Tsutomu Ohkita
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Correspondence to Seung-Hwan Lee.

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Lee, SH., Ohkita, T. Ring-Opening Polymerization of Cyclic Esters onto Liquefied Biomass. J Polym Environ 12, 203–210 (2004). https://doi.org/10.1007/s10924-004-8147-z

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  • DOI: https://doi.org/10.1007/s10924-004-8147-z

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