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Depolymerization of Waste Polybutylene Terephthalate in Hot Compressed Water in a Fused Silica Capillary Reactor and an Autoclave Reactor: Monomer Phase Behavior, Stability, and Mechanism
Wang, Junliang1; Bei, Ke1; Hu, Zhichao1; Liu, Yingping1; Ma, Yanpei1; Shen, Yuan1; Chou, I-Ming2; Pan, Zhiyan1
2017-05-01
Source PublicationPOLYMER ENGINEERING AND SCIENCE
Volume57Issue:5Pages:544-549
AbstractDepolymerization is a potentially viable means of recycling waste polymers, converting them back into monomers or other useful compounds. Terephthalic acid (TPA) and 1,4-butanediol (1,4-BD) are the depolymerization monomer products of polybutylene terephthalate. Their yields from depolymerization in hot compressed water (HCW) were previously found to be lower than reported theoretical values. Thus, the phase behavior, stability, and mechanism of monomers in HCW were investigated in a fused silica capillary reactor (FSCR) and a stainless steel autoclave reactor. Phase change observations showed that TPA was completely dissolved in water at 300 degrees C, was relatively stable at 320 to 350 degrees C, and that its recovery significantly decreased at temperatures above 350 degrees C. The decomposition of TPA increased with increasing heating time. However, the recovery of 1,4-BD decreased rapidly with increasing temperature or heating time. A mechanism for the stability of TPA and 1,4-BD is proposed based on their depolymerization products. The products were quantified by Fourier transform-infrared spectroscopy, high-performance liquid chromatography, and gas chromatography coupled with mass spectrometry. The wall effect of the stainless steel autoclave promoted the decomposition of TPA and 1,4-BD in HCW. (C) 2016 Society of Plastics Engineers
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1002/pen.24450
Indexed BySCI
Language英语
WOS KeywordSUPERCRITICAL WATER ; SUBCRITICAL WATER ; HIGH-TEMPERATURE ; BIOMASS ; POLYCARBONATE ; CHLOROBENZENE ; DEGRADATION ; HYDROLYSIS
WOS SubjectEngineering, Chemical ; Polymer Science
WOS IDWOS:000403319300007
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/3790
Collection深海科学研究部_深海极端环境模拟研究实验室
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, Hainan, Peoples R China
Recommended Citation
GB/T 7714
Wang, Junliang,Bei, Ke,Hu, Zhichao,et al. Depolymerization of Waste Polybutylene Terephthalate in Hot Compressed Water in a Fused Silica Capillary Reactor and an Autoclave Reactor: Monomer Phase Behavior, Stability, and Mechanism[J]. POLYMER ENGINEERING AND SCIENCE,2017,57(5):544-549.
APA Wang, Junliang.,Bei, Ke.,Hu, Zhichao.,Liu, Yingping.,Ma, Yanpei.,...&Pan, Zhiyan.(2017).Depolymerization of Waste Polybutylene Terephthalate in Hot Compressed Water in a Fused Silica Capillary Reactor and an Autoclave Reactor: Monomer Phase Behavior, Stability, and Mechanism.POLYMER ENGINEERING AND SCIENCE,57(5),544-549.
MLA Wang, Junliang,et al."Depolymerization of Waste Polybutylene Terephthalate in Hot Compressed Water in a Fused Silica Capillary Reactor and an Autoclave Reactor: Monomer Phase Behavior, Stability, and Mechanism".POLYMER ENGINEERING AND SCIENCE 57.5(2017):544-549.
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