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

Xuechao Wang; Haibing Wei; Hongmei Xu; Xueliang Li; Guobing Zhang; Sheng Cheng; Chenxi Wang; Gang Ruan; Yiyang Zhou; Yunsheng Ding

Polymer Testing (Nov 2021)

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

Xuechao Wang,
Haibing Wei,
Hongmei Xu,
Xueliang Li,
Guobing Zhang,
Sheng Cheng,
Chenxi Wang,
Gang Ruan,
Yiyang Zhou,
Yunsheng Ding

Affiliations

Xuechao Wang: 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
Haibing Wei: 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
Hongmei Xu: Anhui Province Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, 230009, China; Department of Pharmaceutical Science and Engineering, School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230601, China
Xueliang Li: School Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China
Guobing Zhang: Anhui Province Key Laboratory of Advanced Functional Materials and Devices, 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
Sheng Cheng: Anhui Province Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, 230009, China; Instrumental Analysis Center, Hefei University of Technology, Hefei, 230009, China
Chenxi Wang: 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
Gang Ruan: 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
Yiyang Zhou: 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
Yunsheng Ding: 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; Corresponding author. Anhui Province Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, 230009, China.

Journal volume & issue: Vol. 103
p. 107365

Abstract

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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.

Published in Polymer Testing

ISSN: 0142-9418 (Print); 1873-2348 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Chemical technology: Polymers and polymer manufacture
Website: https://www.journals.elsevier.com/polymer-testing

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