In 2022,Xia, LiangLiang; Tu, HongJun; Zeng, Wen; Yang, XiaoLing; Zhou, Ming; Li, Linkai; Guo, Xiao published an article in Journal of Materials Chemistry A: Materials for Energy and Sustainability. The title of the article was 《A room-temperature self-healing elastomer with ultra-high strength and toughness fabricated via optimized hierarchical hydrogen-bonding interactions》.Safety of 2,6-Pyridinedimethanol The author mentioned the following in the article:
The preparation of room-temperature self-healing polymeric materials with good healing efficiency and high mech. strength is challenging. Two processes are essential to realize the room-temperature self-healing of materials: (a) a non-crystallized structure and interpenetration and diffusion of polymer chains; (b) fast reorganization of the intermol. bonds at damaged sites. Using these strategies, a new polyurethane elastomer is prepared in this study via three-step polyadditions using polytetramethylene ether glycol, isophorone diisocyanate, 2,6-pyridinedimethanol, and 4,4′-methylene bis(2-chloroaniline). The prepared elastomer possesses excellent tensile strength (34.1 MPa), high toughness (127.3 MJ m-3), high fracture energy (119.1 kJ m-2), and good stretchability (2014%). Furthermore, it exhibits strain-induced strengthening behavior and its mech. performances are superior to those of previously reported room-temperature self-healing polymer materials. The polyurethane elastomer synthesized via optimized hierarchical H-bonding interactions ultimately exhibited a synchronous self-healing efficiency of more than 83% with tensile strength, elongation, and toughness at 25°C ± 2°C after self-healing for 48 h. This study offers beneficial insights into the preparation of room-temperature self-healing polymers with high mech. strength. In the experiment, the researchers used many compounds, for example, 2,6-Pyridinedimethanol(cas: 1195-59-1Safety of 2,6-Pyridinedimethanol)
2,6-Pyridinedimethanol(cas: 1195-59-1) belongs to pyridine. Pyridine is very deactivated towards electrophilic substitution with respect to benzene. For this reason classical formylation, using methods such as the Gattermann or Vilsmeier reactions, are not generally successful. Safety of 2,6-Pyridinedimethanol
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