@article{c1d5b7dc-33b7-4f8f-95aa-00bf2bdf8a7a,
  abstract     = {{There has been active research in the development of new rigid biobased <br>
aromatic dicarboxylate monomers that can replace the widely used <br>
fossil-based dimethyl terephthalate in polyester production. In this <br>
work, a new biobased dicarboxylate monomer with a spiroacetal unit was <br>
synthesized from biobased vanillin and pentaerythritol, which aims to <br>
partially or completely replace the fossil-based dimethyl terephthalate <br>
monomer in the production of polyesters. Polyesterification of the new <br>
spirocetal diester monomer, 1,6-hexanediol, in the presence or absence <br>
of dimethyl terephthalate, yielded a series of copolyesters with a <br>
tunable monomer composition and properties. The incorporated rigid <br>
spiroacetal units in the polyesters significantly enhanced the glass <br>
transition temperature <i>T</i><sub>g</sub> (up to 72°C) and the storage<br>
 moduli according to differential scanning calorimetry (DSC) and dynamic<br>
 mechanical analysis (DMA) measurements, respectively. Furthermore, the <br>
obtained polymer films displayed improved oxygen gas barrier by the <br>
incorporation of spiroacetal structures, which indicated their potential<br>
 toward food packaging. Finally, we discovered that the obtained <br>
polyesters could be enzymatically depolymerized by the cutinase HiCut <br>
from <i>Humicola insolens</i>, indicating potential biodegradability or enzymatic recyclability.}},
  author       = {{Mankar, Smita V. and Linares-Pastén, Javier A. and Nguyen, Tam T. and Wahlberg, Jan and Warlin, Niklas and Valsange, Nitin G. and Rehnberg, Nicola and Lundmark, Stefan and Jannasch, Patric and Zhang, Baozhong}},
  issn         = {{1438-7492}},
  language     = {{eng}},
  month        = {{05}},
  number       = {{5}},
  publisher    = {{Wiley-VCH Verlag}},
  series       = {{Macromolecular Materials and Engineering}},
  title        = {{Toward Fully Biobased Polyesters with Spiroacetal Units: Synthesis and Enzymatic Depolymerization}},
  url          = {{http://dx.doi.org/10.1002/mame.202500469}},
  doi          = {{10.1002/mame.202500469}},
  volume       = {{311}},
  year         = {{2026}},
}