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No Strain, No Gain? : Enzymatic Ring-Opening Polymerization of Strainless Aliphatic Macrolactones

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2017

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https://doi.org/10.1002/marc.201600638
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Macromolecular Rapid Communications : MRC. 2017, 38(4), 1600638. ISSN 1022-1336. eISSN 1521-3927. Available under: doi: 10.1002/marc.201600638

Zusammenfassung

Starting from readily available oleic and erucic acid, macrocyclic nonadecalactone (C19 ) and tricosalactone (C23 ) can be synthesized in polymerization grade purity in a four-step reaction sequence. Ring-opening polymerization (ROP) of these strainless macrolactones can be performed utilizing an enzyme as a catalyst. Despite the missing ring-strain as key driving force for smaller (strained) lactones, high molar masses (Mn ≈ 10(5) g mol(-1) ) can be accessed in an entropically driven ROP. Polyester-19 and polyester-23 prepared feature melting temperatures well above 100 °C. Further analysis of the mechanical properties of these materials displays the resemblance to polyethylene. For example, Young's moduli on the order of 600 MPa are observed as a result of the high crystallinity of the polymer.

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ISO 690WITT, Timo, Manuel HÄUSSLER, Stefan MECKING, 2017. No Strain, No Gain? : Enzymatic Ring-Opening Polymerization of Strainless Aliphatic Macrolactones. In: Macromolecular Rapid Communications : MRC. 2017, 38(4), 1600638. ISSN 1022-1336. eISSN 1521-3927. Available under: doi: 10.1002/marc.201600638
BibTex
@article{Witt2017-02Strai-38594,
  year={2017},
  doi={10.1002/marc.201600638},
  title={No Strain, No Gain? : Enzymatic Ring-Opening Polymerization of Strainless Aliphatic Macrolactones},
  number={4},
  volume={38},
  issn={1022-1336},
  journal={Macromolecular Rapid Communications : MRC},
  author={Witt, Timo and Häußler, Manuel and Mecking, Stefan},
  note={Article Number: 1600638}
}
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