文献类型：期刊文献

英文题名：Structures of the co-branching reactive products of isotactic polypropylene with high-density polyethylene and the effect on the in situ compatibilization of mixed recycled materials

作者：Xu, Yinhan Wang, Jun Luo, Zhu Li, Jianjun Xue, Bai Chen, Xingjiang Li, Xiaolong Yang, Le Linghu, Changkai Tao, Yao

第一作者：Xu, Yinhan

通信作者：Luo, Z[1];Li, JJ[2]

机构：[1]Guizhou Univ, Coll Mat & Met, Guiyang 550025, Peoples R China;[2]Kingfa Sci & Technol Co Ltd, Guangzhou 510665, Peoples R China;[3]Guizhou Acad Sci, Guiyang, Peoples R China;[4]Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Hubei Engn Res Ctr Biomat & Med Protect Mat, Wuhan, Peoples R China;[5]Sch Mat & Energy Engn, Guizhou Inst Technol, Guiyang, Peoples R China

第一机构：Guizhou Univ, Coll Mat & Met, Guiyang 550025, Peoples R China

通信机构：corresponding author), Guizhou Univ, Coll Mat & Met, Guiyang 550025, Peoples R China;corresponding author), Kingfa Sci & Technol Co Ltd, Guangzhou 510665, Peoples R China.

年份：0

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20224012826875);Scopus(收录号：2-s2.0-85139061360);WOS:【SCI-EXPANDED(收录号:WOS:000859952300001)】；

基金：Science and Technology Plan Project of Guizhou Province, Grant/Award Number: Qian Ke He JiChu ZK [2022] 185; The Youth Science and Technology Project of Guizhou Provincial Education Department, Grant/Award Number: Qian Jiao He KY [2022] 354; The National Key R&D Plan of China, Grant/Award Number: 2019YFC1908200

语种：英文

外文关键词：applications; recycling; synthesis and processing techniques

摘要：The recycling of petroleum-based polymers such as polypropylene (PP) and polyethylene (PE) is an effective means of reducing environmental pollution. However, the incompatible PP and PE blended waste is difficult to separate accurately, which reduces the quality of the recycled material. In this paper, the trifunctional acrylate monomer (trimethylolpropane triacrylate), peroxide (2,5-dimethyl-92,5-di[tert-butylperoxy] hexane) and free radical activity modifier (zinc dimethyldithiocarbamate) were applied to in situ generate the copolymer of isotactic polypropylene and high-density polyethylene (iPP-co-HDPE) with a long-chain co-branched structure via a melt blending method. The co-crystallization of the branched copolymer chain segments with the chemical identical homopolymers vastly improved the compatibility of iPP and HDPE components. This in situ co-branching compatibility strategy resulted in a significant improvement in the mechanical properties of PE and PP mixed wastes. The temperature gradient extraction method was used to separate the co-branching modified iPP/HDPE blends. The results confirm that the separated iPP-co-HDPE components have a highly co-branched structure. The significant improvement in compatibility resulted in a large increase in elongation at break and impact strength of the iPP/HDPE blends, which provides an economic and effective method for the recycling of mixed PE and PP wastes.