Synthesis of highly efficient non-lethal repellent for rats from natural capsaicin and its influence on properties of EVA

Polymer Testing

Sheng Cheng¹  Haibing Wei²  Xueliang Li²  Yiyang Zhou³  Xuechao Wang⁴  Gang Ruan⁴  Hongmei Xu⁴  Guobing Zhang⁴  Yunsheng Ding⁴  Chenxi Wang⁵ 

[1] Department of Pharmaceutical Science and Engineering, School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230601, China;School Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China;State Key Laboratory of Advanced Display Technology, Special Display and Imaging Technology Innovation Center of Anhui Province, Academy of Opto-electric Technology, Hefei University of Technology, Hefei, 230009, China;Anhui Province Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, 230009, China;School Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China;

关键词: Rat proof;    Natural capsaicin;    Synthesis;    Synergistic flame retardant;    Ethylene vinyl acetate copolymer;    Molecular dynamic simulation;   

DOI  :  

来源: DOAJ

【 摘 要 】

A repellent for rats named DC has been successfully synthesized from natural capsaicin and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) via a one-pot procedure. The chemical structure of obtained DC is confirmed by Fourier transform infrared (FTIR), Raman and nuclear magnetic resonance (NMR). Then DC was incorporated into ethylene vinyl acetate copolymer (EVA) by blending, to endow EVA with rat proof property and present the advantage of non-lethal. The influence of DC on the structure and properties of EVA is investigated systematically by theoretical calculations and various measurements. Thermogravimetric analysis (TGA) reveals that the incorporation of 4 wt% DC into EVA can significantly enhance the char residue yield from 2.80 wt% to 6.84 wt%. In addition, limiting oxygen index (LOI) and the char residues analysis suggest that DC could facilitate the formation of char layers, resulting in the improvement of synergistic flame retardancy for EVA/DC compounds. This work provided novel insights into the preparation of highly efficient non-lethal repellent for rats and its potential application for polymer materials.

【 授权许可】

Unknown