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Interactions between Low-Density Polyethylene (LDPE) and Polypropylene (PP) during the Mild Cracking of Polyolefin Mixtures in a Closed-Batch Reactor
Jing, Xiaodong1,2; Zhao, Yuehong1; Wen, Hao1; Xu, Zhihong1
2013-10-01
Source PublicationENERGY & FUELS
Volume27Issue:10Pages:5841-5851
AbstractThermal decomposition behaviors of neat polypropylene (PP) and low-density polyethylene (LDPE) and LDPE/PP mixture with different ratios (30/70, 50/50, 70/30) are studied under nonisothermal conditions in closed-batch reactors. The presence of a synergistic effect is observed for mixture samples with a PP composition of >= 30 wt %. Different proportions of PP in LDPE/PP mixtures give different interaction effects. The 70/30 LDPE/PP mixture starts to give viscosity-reducing effect and can degrade at lower temperature; the 50/50 LDPE/PP mixture gives higher gaseous products yield, specifically, more methane, ethane and propane; and the 30/70 LDPE/PP mixture makes more aromatics formed in the liquid products. The synergetic effect of LDPE and PP is related not only to the mass fraction of PP, but also to the reaction time. The interactions mechanism are related to enhanced intermolecular hydrogen transfer between LDPE/its cracked products and PP/its cracked products, not only in the liquid phase but also in the gas phase, because of the long cracking time in closed-batch reactors, where PP/its cracked products provide more radicals and PE/its cracked products provide more secondary hydrogen for intermolecular hydrogen transfer, and the combination of these factors enhances the chain breakage. This study also indicates that LDPE/PP mixture increases the aromatics formation mainly by increasing olefinic content due to the more beta-scission reactions in the LDPE/PP mixture mild cracking.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Language英语
WOS KeywordTHERMAL-DEGRADATION ; TEMPERATURE PYROLYSIS ; PLASTIC WASTE ; CO-PYROLYSIS ; PRODUCTS ; KINETICS ; POLYSTYRENE ; DECOMPOSITION ; THERMOLYSIS ; POLYETHENE
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000326126700029
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Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13498
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Jing, Xiaodong,Zhao, Yuehong,Wen, Hao,et al. Interactions between Low-Density Polyethylene (LDPE) and Polypropylene (PP) during the Mild Cracking of Polyolefin Mixtures in a Closed-Batch Reactor[J]. ENERGY & FUELS,2013,27(10):5841-5851.
APA Jing, Xiaodong,Zhao, Yuehong,Wen, Hao,&Xu, Zhihong.(2013).Interactions between Low-Density Polyethylene (LDPE) and Polypropylene (PP) during the Mild Cracking of Polyolefin Mixtures in a Closed-Batch Reactor.ENERGY & FUELS,27(10),5841-5851.
MLA Jing, Xiaodong,et al."Interactions between Low-Density Polyethylene (LDPE) and Polypropylene (PP) during the Mild Cracking of Polyolefin Mixtures in a Closed-Batch Reactor".ENERGY & FUELS 27.10(2013):5841-5851.
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