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Licensed Unlicensed Requires Authentication Published online by De Gruyter June 22, 2022

From passive to emerging smart silicones

  • Maria Cazacu ORCID logo EMAIL logo , Mihaela Dascalu ORCID logo , George-Theodor Stiubianu ORCID logo , Adrian Bele ORCID logo , Codrin Tugui ORCID logo and Carmen Racles ORCID logo

Abstract

Amassing remarkable properties, silicones are practically indispensable in our everyday life. In most classic applications, they play a passive role in that they cover, seal, insulate, lubricate, water-proof, weather-proof etc. However, silicone science and engineering are highly innovative, seeking to develop new compounds and materials that meet market demands. Thus, the unusual properties of silicones, coupled with chemical group functionalization, has allowed silicones to gradually evolve from passive materials to active ones, meeting the concept of “smart materials”, which are able to respond to external stimuli. In such cases, the intrinsic properties of polysiloxanes are augmented by various chemical modifications aiming to attach reactive or functional groups, and/or by engineering through proper cross-linking pattern or loading with suitable fillers (ceramic, magnetic, highly dielectric or electrically conductive materials, biologically active, etc.), to add new capabilities and develop high value materials. The literature and own data reflecting the state-of-the art in the field of smart silicones, such as thermoplasticity, self-healing ability, surface activity, electromechanical activity and magnetostriction, thermo-, photo-, and piezoresponsivity are reviewed.


Corresponding author: Maria Cazacu, Department of Inorganic Polymers, “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41A, 700487 Iasi, Romania, E-mail:

Funding source: Romanian Ministry of Research, Innovation and Digitization, CNCS/CCCDI–UEFISCDI https://doi.org/10.13039/501100006730

Award Identifier / Grant number: PN-III-P2-2.1-PED-2019-3652 within PNCDI III (contract 320/2020, 3DETSil)

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: This work was supported by a grant of the Romanian Ministry of Research, Innovation and Digitization, CNCS/CCCDI–UEFISCDI, project number PN-III-P2-2.1-PED-2019-3652, within PNCDI III (contract 320/2020, 3DETSil).

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2021-10-18
Accepted: 2022-03-26
Published Online: 2022-06-22

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