3. Juni 2020

3D Printing of Supramolecular Polymers: Impact of Nanoparticles and Phase Separation on Printability.

Rupp, H., et al. Macromolecular Rapid Communications 2019,1900467, DOI: https://doi.org/10.1002/marc.201900467.

3D printing of linear and three-arm star supramolecular polymers with attached hydrogen bonds and their nanocomposites is reported. The linear and three-arm star poly(isobutylene)s PIB-B2 (Mn = 8500 g mol -1), PIB-B3 (Mn = 16 000 g mol -1), and linear poly(ethylene glycol)s PEG-B2 (Mn = 900 g mol-1, 8500 g mol -1) are prepared and then probed by melt-rheology to adjust the viscosity to address the proper printing window. A blend of the linear polymer PIB-B2 and the three-arm star polymer PIB-B3 (ratio ≈ 3/1 mol) reaches an even higher structural stability, able to build free-standing structures. Reproduced by permission. Copyright © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.