Benzaldehyde decorated octadecylamine for tailor-made molecular firefighting and efficient thermal energy management was written by Zhao, Pan-Pan;Deng, Cong;Zhao, Ze-Yong;Li, Xing-Yu;Chen, Hong;Wang, Yu-Zhong. And the article was included in Chemical Engineering Journal (Amsterdam, Netherlands) in 2022.Recommanded Product: 1552-42-7 This article mentions the following:
More than 40% of the energy generated globally is consumed by residential and com. buildings, so energy efficient materials for buildings are urgently needed at present. On-demand thermal energy storage/release using phase change materials (PCMs) can improve thermal energy utilization efficiency, however, they are facing low adaptability to temperature and easy flammability in the case of fulfilling high thermal management capacity. Herein, we report octadecylamine-based PCMs with tailor-made mol. firefighting and thermal energy management capability. These synthesized octadecylamine-based Schiff base-containing PCMs (SB-PCMs) may self-extinguish while encountering short-time fire and possess variable phase transition temperatures of 33, 42, 92, and 101°C. Meanwhile, these SB-PCMs own high phase transition enthalpies of 161.4-183.4 J g-1 and excellent cyclic stability. When SB-PCMs as thermal energy management materials in wood plastic-based building materials, they show high adaptability to ambient temperature and excellent thermal management capability, achieving temperature regulation of 9.0°C. Meanwhile, fire safety of the composite wood plastic materials is significantly improved. Detailed anal. confirms that the incorporated benzaldehyde with various positional substituted hydroxyl may induce noncovalent interactions (mainly hydrogen bond and π-π stacking) of SB-PCMs and further control their self-assembling processes, thus achieving multiple thermal responses of SB-PCMs; self-crosslinking charring of benzaldehyde-based Schiff base structure may retard fire spreading, therefore presenting mol. firefighting. Addnl. multistage thermochromic behaviors of SB-PCMs may extend their application in temperature-sensitive paint, intelligent fabric, etc. This work firstly represents a method for manipulating the multistage thermal and fire responses of PCM in the case of fulfilling high thermal energy management capacity and confirms its mol.-firefighting and energy efficient application in building materials. In the experiment, the researchers used many compounds, for example, Crystal violet lactone (cas: 1552-42-7Recommanded Product: 1552-42-7).
Crystal violet lactone (cas: 1552-42-7) belongs to benzofurans derivatives. Benzofurans are only weakly aromatic in nature and they are cleaved by many oxidative and reductive conditions. They are also prone to polymerisation in the presence of concentrated mineral acids and Lewis acids.Recommanded Product: 1552-42-7
Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem