Mechanics of Polyborosiloxanes across Strain Rates and Strain Amplitudes
- 1University of Bristol , , ,
- 2University of Parma , , Parco Area delle Scienze 17 A , ,
- 3Australian National University , , GPO Box 334 , , ,
Abstract
We report a comprehensive study of the dynamic mechanical properties of polyborosiloxane (PBS) tested using uniaxial compression, shear rheometry, compression DMA, impact loading, and vibrational transmissibility on a commercially available PBS formulation. We report properties for varying orders of magnitude in strain rate and as a function of strain amplitude wherever possible to quantify performance limits of PBS for different loading cases. We observe that in addition to undergoing a viscous to viscoelastic transition, PBS also experiences an increase in damping at sufficiently high strains within the viscoelastic regime, suggesting that losses arising from chain interactions in the polymer backbone decrease the effectiveness of the reversible B:Si in storing elastic energy at high strain rates for a given PBS formulation. Further, our results suggest that the onset of damping increase depends on the strain as well as the strain rate, with transitions occurring at 0.18 s–1, 1.48 s–1, and between 50 and 150 s–1 for strains of 0.03%, 0.7%, and 15%, respectively. These results inform the use of PBS for energy dissipation applications such as impact and vibration damping, as well as serving as a benchmark to aid in cross-comparison of other application-driven work with comparatively limited mechanical test campaigns.
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BibTeX
@article{nelms2026mechanics,
title = {{Mechanics of Polyborosiloxanes across Strain Rates and Strain Amplitudes}},
author = {Katherine Nelms and Manuel Dedola and Cameron Abercromby and Charles de Kergariou and Jemma Rowlandson and Neha Chandarana and Ludovico Cademartiri and Adam W. Perriman and James P. K. Armstrong and Fabrizio Scarpa},
journal = {ACS Omega},
year = {2026},
month = oct,
doi = {10.1021/acsomega.6c09801},
url = {https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c09801/5461365/Mechanics-of-Polyborosiloxanes-across-Strain-Rates},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Mechanics of Polyborosiloxanes across Strain Rates and Strain Amplitudes
AU - Katherine Nelms
AU - Manuel Dedola
AU - Cameron Abercromby
AU - Charles de Kergariou
AU - Jemma Rowlandson
AU - Neha Chandarana
AU - Ludovico Cademartiri
AU - Adam W. Perriman
AU - James P. K. Armstrong
AU - Fabrizio Scarpa
PY - 2026
DA - 2026/10/30
JO - ACS Omega
DO - 10.1021/acsomega.6c09801
UR - https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c09801/5461365/Mechanics-of-Polyborosiloxanes-across-Strain-Rates
AB - We report a comprehensive study of the dynamic mechanical properties of polyborosiloxane (PBS) tested using uniaxial compression, shear rheometry, compression DMA, impact loading, and vibrational transmissibility on a commercially available PBS formulation. We report properties for varying orders of magnitude in strain rate and as a function of strain amplitude wherever possible to quantify performance limits of PBS for different loading cases. We observe that in addition to undergoing a viscous to viscoelastic transition, PBS also experiences an increase in damping at sufficiently high strains within the viscoelastic regime, suggesting that losses arising from chain interactions in the polymer backbone decrease the effectiveness of the reversible B:Si in storing elastic energy at high strain rates for a given PBS formulation. Further, our results suggest that the onset of damping increase depends on the strain as well as the strain rate, with transitions occurring at 0.18 s–1, 1.48 s–1, and between 50 and 150 s–1 for strains of 0.03%, 0.7%, and 15%, respectively. These results inform the use of PBS for energy dissipation applications such as impact and vibration damping, as well as serving as a benchmark to aid in cross-comparison of other application-driven work with comparatively limited mechanical test campaigns.
SN - 2470-1343
ER -