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Depolymerization of poly(ethylene naphthalate) in fused silica capillary reactor and autoclave reactor from 240 to 280 degrees C in subcritical water
Bei, Ke1; Ma, Peixia1; Wang, Junliang1; Li, Kai1; Lyu, Jinghui1; Hu, Zhichao1; Chou, I-Ming2; Pan, Zhiyan1; *; Pan, Zhiyan(Zhejiang Univ Technol, Dept Environm Engn, Hangzhou 310032, Zhejiang, Peoples R China)
2017-12-01
Source PublicationPOLYMER ENGINEERING AND SCIENCE
Volume57Issue:12Pages:1382-1388
Contribution Rank第1完成单位 ; 第2完成单位
AbstractDepolymerization of poly(ethylene naphthalate) (PEN) in subcritical water was performed in a fused silica capillary reactor (FSCR) and an autoclave reactor. The phase behaviors of PEN in water during the heating-cooling process in the FSCR were observed under microscope and images were captured by digital camera. Reaction conditions for PEN hydrolysis in the autoclave reactor were chosen based on the experimental results obtained from the FSCR. Under autogenous pressures in the autoclave reactor, the effects of the water/PEN mass ratio (8.0 g/1.0 g to 16.0 g/1.0 g), reaction temperature (240-280 degrees C) and reaction time (5-60 min) on the depolymerization yield and products yields were investigated. The main products of depolymerization were identified and quantified as 2,6-naphthalene dicarboxylic acid (2,6-NDA) and ethylene glycol (EG). PEN was completely depolymerized at 260 degrees C in 60 min with an optimal water/PEN mass ratio of 12.0 g/1.0 g (12:1). The yields of 2,6-NDA and EG were optimized to 83.1% and 79.7%, respectively. Reaction kinetics analysis showed that the PEN depolymerization in subcritical water was first-order and the activation energy was 95 kJ mol(-1). Additionally, a reaction pathway was proposed based on the experimental results. POLYM. ENG. SCI., 57:1382-1388, 2017. (c) 2017 Society of Plastics Engineers
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1002/pen.24523
URL查看原文
Indexed BySCI
Language英语
WOS KeywordHOT COMPRESSED WATER ; SUPERCRITICAL METHANOL ; POLYETHYLENE TEREPHTHALATE ; POLY(BUTYLENE TEREPHTHALATE) ; PHTHALIC-ANHYDRIDE ; HIGH-TEMPERATURE ; ETHYLENE-GLYCOL ; POLY(TRIMETHYLENE TEREPHTHALATE) ; HYDROLYTIC DEPOLYMERIZATION ; PHASE-BEHAVIOR
WOS SubjectEngineering, Chemical ; Polymer Science
WOS IDWOS:000417474400013
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.idsse.ac.cn/handle/183446/5266
Collection深海科学研究部_深海极端环境模拟研究实验室
Corresponding AuthorPan, Zhiyan; *; Pan, Zhiyan(Zhejiang Univ Technol, Dept Environm Engn, Hangzhou 310032, Zhejiang, Peoples R China)
Affiliation1.Zhejiang Univ Technol, Dept Environm Engn, Hangzhou 310032, Zhejiang, Peoples R China
2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Lab Expt Study Deep Sea Extreme Condit, Sanya 572000, Peoples R China
Recommended Citation
GB/T 7714
Bei, Ke,Ma, Peixia,Wang, Junliang,et al. Depolymerization of poly(ethylene naphthalate) in fused silica capillary reactor and autoclave reactor from 240 to 280 degrees C in subcritical water[J]. POLYMER ENGINEERING AND SCIENCE,2017,57(12):1382-1388.
APA Bei, Ke.,Ma, Peixia.,Wang, Junliang.,Li, Kai.,Lyu, Jinghui.,...&Pan, Zhiyan.(2017).Depolymerization of poly(ethylene naphthalate) in fused silica capillary reactor and autoclave reactor from 240 to 280 degrees C in subcritical water.POLYMER ENGINEERING AND SCIENCE,57(12),1382-1388.
MLA Bei, Ke,et al."Depolymerization of poly(ethylene naphthalate) in fused silica capillary reactor and autoclave reactor from 240 to 280 degrees C in subcritical water".POLYMER ENGINEERING AND SCIENCE 57.12(2017):1382-1388.
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