文献类型：期刊文献

英文题名：Thermal Degradation Kinetics of Plasticized Poly (Vinyl Chloride) with Six Different Plasticizers

作者：Wang, Qin[1,2];Wu, Wei[1];Tang, Yanfang[2];Bian, Jianjian[2];Zhu, Songwei[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Sino German Joint Res Ctr Adv Mat, Shanghai 200237, Peoples R China;[2]Shanghai New Shanghua Polymer Mat Co Ltd, Shanghai, Peoples R China

年份：2017

卷号：56

期号：6

起止页码：420

外文期刊名：JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS

收录：;EI(收录号：20172203706235);WOS:【SCI-EXPANDED(收录号:WOS:000402088800006)】；

语种：英文

外文关键词：Poly (vinyl chloride) (PVC); plasticizer; thermal degradation kinetics; activation energy

摘要：Plasticized PVC formulated with different kinds of normally used plasticizers, including bis(2-ethylhexyl) phthalate (DOP), dioctyl terephthalate (DOTP), acetyl tri-n-butyl citrate (ATBC), acetyl trioctyl citrate (ATOC), trioctyl trimellitate (TOTM), and a new vegetable devived plasticizer, isosorbide ester (ID-37), were prepared by a melt blending method. The effect of plasticizer on the thermal degradation behavior of plasticized PVC was investigated by thermal gravimetric analysis (TGA). The activation energies were calculated by three well known methods, developed by Flynn-Wall-Ozawa (FWO), Friedman and Kissinger, respectively. The TGA conducted in N-2 atmosphere showed that the type of plasticizer had an obvious influence on the thermal stability of plasticized PVC. It was found that the peak temperatures (T-P) of the thermal degradation processes shifted to higher temperature with the increase of the heating rate, with two processes being shown. The activation energy of the first thermal decomposition process (E-1), calculated by the Kissinger method, was between 118 and 130kJ/mol, while the activation energy of the second thermal decomposition process (E-2) was between 261 and 305kJ/mol, except 499kJ/mol for the PVC/TOTM formulation. The corresponding values of E-1 and E-2 obtained by the Flynn-Wall-Ozawa method were similar to the above data. E of the sample with TOTM also showed a higher value than the others; the results demonstrated that the PVC plasticized with TOTM was more thermally stable than with the others. The activation energies for certain conversion degrees were calculated by the Friedman method and the FWO method. The value of activation energy for 20%, 50%, and 80% conversion calculated by the Friedman method, exhibited an apparent difference from that calculated by the Flynn-Wall-Ozawa method; the results showed that the value of E obtained by the Friedman method was much more reasonable than that obtained by the Flynn-Wall-Ozawa method.