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Article

Molecular Weight Enables Fine-Tuning the Thermal and Dielectric Properties of Polymethacrylates Bearing Sulfonyl and Nitrile Groups as Dipolar Entities

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Facultad de Ciencias, Centro de Nanotecnología Aplicada, Universidad Mayor, Camino la Pirámide 5750, Santiago 8580745, Chile
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Departamento de Química Física, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
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Departamento de Química Orgánica, Universidad de La Laguna, Avda, Astrofísico Francisco Sánchez S/N, 38206 La Laguna, Tenerife, Spain
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Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda, Astrofísico Francisco Sánchez 2, 38206 La Laguna, Tenerife, Spain
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Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
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Universidad País Vasco/Euskal Herriko Unibertsitatea, ‘Materials + Technologies’ Group, Dpto. Ingeniería Química y Medio Ambiente, Escuela Univ Politécnica, Pza Europa 1, 20018 Donostia-San Sebastián, Gipuzkoa, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Eric David
Polymers 2021, 13(3), 317; https://doi.org/10.3390/polym13030317
Received: 31 December 2020 / Revised: 14 January 2021 / Accepted: 18 January 2021 / Published: 20 January 2021
(This article belongs to the Special Issue Dielectric Polymers)
In this work, polymethacrylates containing sulfonyl and nitrile functional groups were successfully prepared by conventional radical polymerization and reversible addition-fragmentation chain-transfer polymerization (RAFT). The thermal and dielectric properties were evaluated, for the first time, considering differences in their molecular weights and dispersity values. Variations of the aforementioned properties do not seem to substantially affect the polarized state of these materials, defined in terms of the parameters ε’r, ε”r and tan (δ). However, the earlier appearance of dissipative phenomena on the temperature scale for materials with lower molecular weights or broader molecular weight distributions, narrows the range of working temperatures in which they exhibit high dielectric constants along with low loss factors. Notwithstanding the above, as all polymers showed, at room temperature, ε’r values above 9 and loss factors below 0.02, presenting higher dielectric performance when compared to conventional polymer materials, they could be considered as good candidates for energy storage applications. View Full-Text
Keywords: polymer dielectrics; dipolar glass polymer; dielectric constant; loss tangent; energy storage polymer dielectrics; dipolar glass polymer; dielectric constant; loss tangent; energy storage
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MDPI and ACS Style

Bonardd, S.; Saldías, C.; Leiva, Á.; Díaz Díaz, D.; Kortaberria, G. Molecular Weight Enables Fine-Tuning the Thermal and Dielectric Properties of Polymethacrylates Bearing Sulfonyl and Nitrile Groups as Dipolar Entities. Polymers 2021, 13, 317. https://doi.org/10.3390/polym13030317

AMA Style

Bonardd S, Saldías C, Leiva Á, Díaz Díaz D, Kortaberria G. Molecular Weight Enables Fine-Tuning the Thermal and Dielectric Properties of Polymethacrylates Bearing Sulfonyl and Nitrile Groups as Dipolar Entities. Polymers. 2021; 13(3):317. https://doi.org/10.3390/polym13030317

Chicago/Turabian Style

Bonardd, Sebastian, Cesar Saldías, Ángel Leiva, David Díaz Díaz, and Galder Kortaberria. 2021. "Molecular Weight Enables Fine-Tuning the Thermal and Dielectric Properties of Polymethacrylates Bearing Sulfonyl and Nitrile Groups as Dipolar Entities" Polymers 13, no. 3: 317. https://doi.org/10.3390/polym13030317

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