Synthesis of Transition Metal Complexes and Their Effects on Combustion Properties of Semi-Rigid Polyvinyl Chloride
Using introduction of MoO<sub>4</sub><sup>2−</sup> and Fe<sup>3+</sup>, Cu<sup>2+</sup>, or Zn<sup>2+</sup> into amphiphilic polymers (DN) via an ion-exchange reaction, different transition metal complexes, as retardants and smoke suppressa...
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doaj-52a5f69531234cadb3dca04a4068b9132021-06-01T00:21:12ZengMDPI AGMaterials1996-19442021-05-01142634263410.3390/ma14102634Synthesis of Transition Metal Complexes and Their Effects on Combustion Properties of Semi-Rigid Polyvinyl ChloridePei Xiang0Jun Xu1Biao Li2Weiqi Liu3Jinshun Zhao4Qining Ke5Siwen Bi6Xuhuang Chen7School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, ChinaSchool of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, ChinaSchool of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, ChinaSchool of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, ChinaSchool of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, ChinaSchool of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, ChinaSchool of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, ChinaSchool of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, ChinaUsing introduction of MoO<sub>4</sub><sup>2−</sup> and Fe<sup>3+</sup>, Cu<sup>2+</sup>, or Zn<sup>2+</sup> into amphiphilic polymers (DN) via an ion-exchange reaction, different transition metal complexes, as retardants and smoke suppressants, including (DN)Mo, Fe(DN)Mo, Cu(DN)Mo, and Zn(DN)Mo were synthesized. Combined with the results of X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR), it could be determined that ionic bonding of these ions with DN occurred. Subsequently, the influence of flame-retardant, smoke-suppression, and mechanical properties of (DN)Mo, Fe(DN)Mo, Cu(DN)Mo, and Zn(DN)Mo on polyvinyl Chloride (PVC) were tested. It was demonstrated that transition metal complexes of three metal elements, Fe(DN)Mo, Cu(DN)Mo, and Zn(DN)Mo, showed better flame retardancy, smoke suppression, and thermal stability as confirmed by microcalorimetry, limiting oxygen index (LOI), smoke density, and thermogravimetric analysis (TGA) tests, in which Cu(DN)Mo worked best due to the Lewis acid mechanism and reductive coupling mechanism. Scanning electron microscopy (SEM) showed that the addition of (DN)Mo, Fe(DN)Mo, Cu(DN)Mo, and Zn(DN)Mo promoted the formation of a dense carbon layer on the PVC surface during combustion, which could protect the interior PVC. The addition of these transition metal complexes hardly impaired the mechanical properties of PVC.https://www.mdpi.com/1996-1944/14/10/2634polyvinyl chloridethermal stabilityflame retardancysmoke suppressionmechanical properties |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Pei Xiang Jun Xu Biao Li Weiqi Liu Jinshun Zhao Qining Ke Siwen Bi Xuhuang Chen |
spellingShingle |
Pei Xiang Jun Xu Biao Li Weiqi Liu Jinshun Zhao Qining Ke Siwen Bi Xuhuang Chen Synthesis of Transition Metal Complexes and Their Effects on Combustion Properties of Semi-Rigid Polyvinyl Chloride Materials polyvinyl chloride thermal stability flame retardancy smoke suppression mechanical properties |
author_facet |
Pei Xiang Jun Xu Biao Li Weiqi Liu Jinshun Zhao Qining Ke Siwen Bi Xuhuang Chen |
author_sort |
Pei Xiang |
title |
Synthesis of Transition Metal Complexes and Their Effects on Combustion Properties of Semi-Rigid Polyvinyl Chloride |
title_short |
Synthesis of Transition Metal Complexes and Their Effects on Combustion Properties of Semi-Rigid Polyvinyl Chloride |
title_full |
Synthesis of Transition Metal Complexes and Their Effects on Combustion Properties of Semi-Rigid Polyvinyl Chloride |
title_fullStr |
Synthesis of Transition Metal Complexes and Their Effects on Combustion Properties of Semi-Rigid Polyvinyl Chloride |
title_full_unstemmed |
Synthesis of Transition Metal Complexes and Their Effects on Combustion Properties of Semi-Rigid Polyvinyl Chloride |
title_sort |
synthesis of transition metal complexes and their effects on combustion properties of semi-rigid polyvinyl chloride |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2021-05-01 |
description |
Using introduction of MoO<sub>4</sub><sup>2−</sup> and Fe<sup>3+</sup>, Cu<sup>2+</sup>, or Zn<sup>2+</sup> into amphiphilic polymers (DN) via an ion-exchange reaction, different transition metal complexes, as retardants and smoke suppressants, including (DN)Mo, Fe(DN)Mo, Cu(DN)Mo, and Zn(DN)Mo were synthesized. Combined with the results of X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR), it could be determined that ionic bonding of these ions with DN occurred. Subsequently, the influence of flame-retardant, smoke-suppression, and mechanical properties of (DN)Mo, Fe(DN)Mo, Cu(DN)Mo, and Zn(DN)Mo on polyvinyl Chloride (PVC) were tested. It was demonstrated that transition metal complexes of three metal elements, Fe(DN)Mo, Cu(DN)Mo, and Zn(DN)Mo, showed better flame retardancy, smoke suppression, and thermal stability as confirmed by microcalorimetry, limiting oxygen index (LOI), smoke density, and thermogravimetric analysis (TGA) tests, in which Cu(DN)Mo worked best due to the Lewis acid mechanism and reductive coupling mechanism. Scanning electron microscopy (SEM) showed that the addition of (DN)Mo, Fe(DN)Mo, Cu(DN)Mo, and Zn(DN)Mo promoted the formation of a dense carbon layer on the PVC surface during combustion, which could protect the interior PVC. The addition of these transition metal complexes hardly impaired the mechanical properties of PVC. |
topic |
polyvinyl chloride thermal stability flame retardancy smoke suppression mechanical properties |
url |
https://www.mdpi.com/1996-1944/14/10/2634 |
work_keys_str_mv |
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1721415133221093376 |