Multifunctional waterborne polyurethane films: Amine-response, thermal-driven self-healing and recyclability was written by Sai, Futao;Zhang, Haitao;Qu, Jianbo;Wang, Jianyong;Zhu, Xiuzhong;Bai, Yang;Ye, Peng. And the article was included in Applied Surface Science in 2022.Synthetic Route of C6H9ClO3 The following contents are mentioned in the article:
Currently, the preparation and application of functional waterborne polyurethane has become a research hotspot in the field of polyurethane. In the present work, different weight ratios of diacetyl oxime and coumarin diol were used as the reactive filler with isophorone diisocyanate (IPDI) and polypropylene glycol (PPG) to prepare superior amine-response, self-healing and recyclable waterborne polyurethane films (WPU-x). Dynamic mech. anal. was carried out to identify the self-healing properties of WPU-x. It was revealed that the WPU-2 film showed an excellent self-healing capability based on the combination of the mobility of the soft segment, dynamic reaction of oxime carbamate bond and hydrogen bonds, and the mech. properties self-healing efficiency can reach 91.11% after self-healing at 90°C for 7 h. UV testing and fluorescence imaging results showed that WPU-2 film exhibit a rapid and concentration-dependent response to dimethylamine (DMA), and it also showed varying degrees of response to other organic amines. The WPU-2 film could be readily applied in cold chain transportation of shrimp and fish for real-time and visual monitoring the freshness of seafoods. At the same time, the WPU-2 film could be recycled via hot-pressing and solution casting. Therefore, this strategy provides some insights for preparing multi-functional waterborne polyurethane. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Synthetic Route of C6H9ClO3).
Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Synthetic Route of C6H9ClO3
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics