Synthesis and pyrolysis mechanism of phenolphthalein poly(aryl ether sulfone) containing isopropyl groups was written by Ling, Meiqi;Yu, Kaifeng;Wang, Jian;Wang, Honghua;Nie, Heran;Wang, Zhipeng;Zhou, Guangyuan. And the article was included in Thermochimica Acta in 2022.Recommanded Product: 496-16-2 This article mentions the following:
A novel phenolphthalein poly(aryl ether sulfone) polymer containing iso-Pr groups (iPrPESC) has been successfully synthesized by SN2 aromatic nucleophilic polycondensation reaction. The pyrolysis mechanism and behavior of iPrPESC were investigated by thermogravimetry coupled with Fourier transform IR spectroscopy and pyrolysis combined with gas chromatog./mass spectrometry. TG-FTIR and Py-GC/MS were used to identify the thermal decomposition products and to determine the possible thermal degradation mechanism. The main mechanism for iPrPESC was one-stage pyrolysis involving main-chain random scission, and the major products of SO2 and phenol were released from the sulfone and ether groups in iPrPESC. The thermal degradation activation energy of iPrPESC was calculated to be 151 ± 4 and 139 ± 4 kJ mol-1 by the Flynn-Wall-Ozawa and Kissinger methods, resp., which were much lower than that of phenolphthalein poly(aryl ether sulfone). Furthermore, introduction of iso-Pr groups on the main chain can significantly reduce the char yield. In the experiment, the researchers used many compounds, for example, 2,3-Dihydrobenzo[b]furan (cas: 496-16-2Recommanded Product: 496-16-2).
2,3-Dihydrobenzo[b]furan (cas: 496-16-2) belongs to benzofurans derivatives. Benzofuran derivatives are one of the most important oxygen-containing heterocycles. Substituted benzofurans find applications such as fluorescent sensors, oxidants, in drug discovery, and in another field of chemistry and agriculture.Recommanded Product: 496-16-2
Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem