文献类型：期刊文献

英文题名：Effect of benzofuranone on degradation and mechanical properties of polypropylene in processing

作者：Meng, Xin;Chen, Weijie;Xin, Zhong[1];Wu, Chushi

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai, Peoples R China; East China Univ Sci & Technol, Sch Chem Engn, Prod Engn Dept, Shanghai, Peoples R China

年份：2018

卷号：24

期号：2

起止页码：124

外文期刊名：JOURNAL OF VINYL & ADDITIVE TECHNOLOGY

收录：;EI(收录号：20160902036755);WOS:【SCI-EXPANDED(收录号:WOS:000431665700004)】；

基金：The authors are grateful for the financial support of Ministry of Science and Technology of People's Republic of China (The People's Republic of China 863 Program, Grant No. 2015AA034003), the Fundamental Research Funds for the Central Universities (Grant No. 222201313006).

语种：英文

外文关键词：Fourier transform infrared spectroscopy - Calorimeters - Differential scanning calorimetry - Plastic products - Extrusion

摘要：Melt flow index, polydistribution index, Fourier-transform infrared spectroscopy, and differential scanning calorimetry have been used for the assessment of the degradation of virgin polypropylene (PP) and PP stabilized with benzofuranone derivatives. When PP samples were subjected to five extrusion cycles, the melt flow index and polydistribution index values of virgin PP sharply increased with the number of extrusion cycles, but the corresponding changes of PP stabilized with benzofuranone derivatives were not as great as those of virgin PP. Furthermore, the results of Fourier-transform infrared spectroscopy and differential scanning calorimetry showed that benzofuranone prevented the increasing of double bonds and the moving of crystal peak temperature to the higher temperature. All those changes indicate that the degradation of PP is inhibited efficiently by benzofuranone derivatives, and the stabilization with benzofuranone derivative in PP is beneficial to the maintenance of mechanical properties of PP. J. VINYL ADDIT. TECHNOL., 24:124-129, 2018. (c) 2016 Society of Plastics Engineers