Self-healing, stretchable, and highly adhesive hydrogels for epidermal patch electrodes was written by Zhou, Xin;Rajeev, Ashna;Subramanian, Arunprabaharan;Li, Yang;Rossetti, Nicolo;Natale, Giovanniantonio;Lodygensky, Gregory A.;Cicoira, Fabio. And the article was included in Acta Biomaterialia in 2022.Name: 2,2′-Oxybis(ethan-1-ol) This article mentions the following:
Flexible, self-healing and adhesive conductive materials with Young′s modulus matching biol. tissues are highly desired for applications in bioelectronics. Here, we report self-healing, stretchable, highly adhesive and conductive hydrogels obtained by mixing polyvinyl alc., sodium tetraborate and a screen printing paste containing the conducting polymer Poly (3,4-ethylenedioxythiophene) doped with polystyrene sulfonate (PEDOT:PSS) and diol additives. The as prepared hydrogels exhibited modeling ability, high adhesion on pig skin (1.96 N/cm2), high plastic stretchability (>10000%), a moderate conductivity, a low compressive modulus (0.3-3.7 KPa), a good strain sensitivity (gauge factor = 3.88 at 500% strain), and remarkable self-healing properties. Epidermal patch electrodes prepared using one of our hydrogels demonstrated high-quality recording of electrocardiog. (ECG) and electromyog. (EMG) signal. Because of their straightforward fabrication, outstanding mech. properties and possibility to combine the electrode components in a single material, hydrogels based on PVA, borax and PEDOT:PSS are highly promising for applications in bioelectronics and wearable electronics. Soft materials with elec. conductivity are investigated for healthcare applications, such as electrodes to measure vital signs that can easily adapt to the shape and the movements of human skin. Conductive hydrogels (i.e. gels containing water) are ideal materials for this purpose due softness and flexibility. In this this work, we report hydrogels obtained mixing an elec. conductive polymer, a water-soluble biocompatible polymer and a salt. These materials show high adhesion on skin, elec. conductivity and ability to self-repair after a mech. damage. These hydrogels were successfully used to fabricate electrode to measure cardiac and muscular elec. signals. In the experiment, the researchers used many compounds, for example, 2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6Name: 2,2′-Oxybis(ethan-1-ol)).
2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. A multistep synthesis may use Grignard-like reactions to form an alcohol with the desired carbon structure, followed by reactions to convert the hydroxyl group of the alcohol to the desired functionality.Name: 2,2′-Oxybis(ethan-1-ol)
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts