PMID- 37080025
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20230501
LR  - 20230501
IS  - 1873-3336 (Electronic)
IS  - 0304-3894 (Linking)
VI  - 453
DP  - 2023 Jul 5
TI  - Water-solvent regulation on complete hydrolysis of thermosetting polyester and 
      complete separation of degradation products.
PG  - 131423
LID - S0304-3894(23)00706-9 [pii]
LID - 10.1016/j.jhazmat.2023.131423 [doi]
AB  - As one of the largest productions of thermosetting plastics, unsaturated 
      polyester resin (UPR) is difficult to be effectively chemcycled after it is 
      discarded due to its dense network structure. Herein, we demonstrate a mild 
      method for efficient alkaline hydrolysis of UPR into useful feedstocks in mixed 
      solvents of polar aprotic solvent and a small amount of H(2)O by utilizing the 
      fragmentation effect of the solvent on the UPR and the swelling effect of H(2)O 
      on the subsequent partially hydrolyzed UPR respectively. The mixed solvents also 
      play a key role in the aggregation and solubility of the degradation products. It 
      is worth noting that the tetrahydrofuran (THF)-H(2)O system achieved 100 % 
      separation of degradation products in an energy-efficient way taking advantage of 
      the insolubility of the carboxylate-containing products in THF and the low 
      boiling point of THF. The participation of non-reactive mixed solvents greatly 
      promotes both the degradation and the separation process of thermosetting 
      polymers.
CI  - Copyright (c) 2023 Elsevier B.V. All rights reserved.
FAU - An, Wenli
AU  - An W
AD  - The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric 
      Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National 
      Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of 
      Chemistry, Sichuan University, Chengdu 610064, China.
FAU - Liu, Xuehui
AU  - Liu X
AD  - The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric 
      Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National 
      Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of 
      Chemistry, Sichuan University, Chengdu 610064, China.
FAU - Li, Junyan
AU  - Li J
AD  - The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric 
      Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National 
      Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of 
      Chemistry, Sichuan University, Chengdu 610064, China.
FAU - Zhao, Xu
AU  - Zhao X
AD  - The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric 
      Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National 
      Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of 
      Chemistry, Sichuan University, Chengdu 610064, China.
FAU - Long, Yuwei
AU  - Long Y
AD  - The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric 
      Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National 
      Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of 
      Chemistry, Sichuan University, Chengdu 610064, China.
FAU - Xu, Shimei
AU  - Xu S
AD  - The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric 
      Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National 
      Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of 
      Chemistry, Sichuan University, Chengdu 610064, China. Electronic address: 
      xushimei@scu.edu.cn.
FAU - Wang, Yu-Zhong
AU  - Wang YZ
AD  - The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric 
      Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National 
      Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of 
      Chemistry, Sichuan University, Chengdu 610064, China.
LA  - eng
PT  - Journal Article
DEP - 20230414
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
SB  - IM
OTO - NOTNLM
OT  - Aprotic solvent
OT  - Fragmentation effect
OT  - Hydrolysis
OT  - Swelling effect
OT  - Unsaturated polyester resin
COIS- Declaration of Competing Interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2023/04/21 00:42
MHDA- 2023/04/21 00:43
CRDT- 2023/04/20 18:05
PHST- 2023/02/27 00:00 [received]
PHST- 2023/04/08 00:00 [revised]
PHST- 2023/04/13 00:00 [accepted]
PHST- 2023/04/21 00:43 [medline]
PHST- 2023/04/21 00:42 [pubmed]
PHST- 2023/04/20 18:05 [entrez]
AID - S0304-3894(23)00706-9 [pii]
AID - 10.1016/j.jhazmat.2023.131423 [doi]
PST - ppublish
SO  - J Hazard Mater. 2023 Jul 5;453:131423. doi: 10.1016/j.jhazmat.2023.131423. Epub 
      2023 Apr 14.