文献类型：期刊文献

英文题名：Reactive extrusion of recycled poly(ethylene terephthalate) with polycarbonate by addition of chain extender

作者：Tang, Xianwen[1]; Guo, Weihong[1]; Yin, Guorong[1]; Li, Binyao[1]; Wu, Chifei[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2007

卷号：104

期号：4

起止页码：2602

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20071610559607);WOS:【SCI-EXPANDED(收录号:WOS:000245141400070)】；

语种：英文

外文关键词：poly(ethylene terephthalate) (PET); polycarbonate (PC); reactive extrusion; impact strength; compatibility

摘要：Poly(ethylene terephthalate) (PET) resin is one of the most widely used engineering plastic with high performance, but the poor impact strength limits its applications for the notch sensitivity. In this research, toughened PET alloy was prepared by blending recycled PET with polycarbonate (PC) and MDI (methylenediphenyl diisocyanate). Intrinsic viscosity and melt viscosity measurements proved increase of the molecular weights of PET via chain-extending reaction. FTIR and DMA results proved that some PET-PC copolymers were produced and the compatibility of PET phase and PC phase was improved. In addition, the reaction induced by MDI also affected the crystallization behaviors of PET, as observed from DSC results, and the crytallinity of PET decreased with the increase of MDI content. For all of these effects of MDI of increasing of molecular weight, improving of compatibility, and limiting the crystallization behaviors of PET/PC alloy, the notched-impact strength was greatly improved from 17.3 to 70.5 kJ/m. (c) 2007 Wiley Periodicals, Inc.