Controlled alcoholysis of PET to obtain oligomers for the preparation of PET-PLA copolymer
文献类型：期刊论文
| 作者 | Fang, Pengtao1,2; Lu, Xingmei2,4; Zhou, Qing2,4; Yan, Dongxia2,4; Xin, Jiayu1,2,4; Xu, Junli2,4; Shi, Chunyan2,4; Zhou, Yongquan3,4; Xia, Shuqian1 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2023 |
| 卷号 | 451页码:15 |
| 关键词 | Polyoxometalate (POM) Controlled alcoholysis Oligomer Swelling |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2022.138988 |
| 英文摘要 | Controlled degradation of macromolecules or natural macromolecules is important for their subsequent utilization. Normally, it is easier to degrade them to monomers than to oligomers in designated molecular weight range, the controlled degradation is much difficult to achieve and has been challenge for the utilization of macromolecules. Here, we proposed a strategy for simultaneous degradation of the inner and outer layers of PET, which avoid the degradation of polymers from the outside to the inside and achieved the controlled degradation. Under high temperature and micro-pressure conditions, PET is transformed from dense to flocculent structure by the swelling effect, which satisfies the need for simultaneous degradation of the inner and outer layers. In addition, a stable "Dawson" type Polyoxometalates (POMs) alpha(2)-K8P2W17O61X(H2O)center dot 16H(2)O (X = Zn, Mn, Co, Ni, Cu) with limited number of catalytic activity center was synthesized and applied to PET alcoholysis to obtain oligomer with given molecular weight range. Under the optimal conditions, PET: EG: POM catalyst = 1.0: 4.0: 0.02 (wt%), 240 degrees C, 10 min, PET was completely degraded and obtained the oligomer products (Mn < 2000 g/mol) with 72.1 % yield. By investigating the mechanism of the controlled alcoholysis, the formation of flocculent PET was be the key factor in achieving controlled degradation; hydrogen bonding and coordination of POMs are the key interactions to achieve rapid alcoholysis. Finally, oligomers were applied in the preparation of PET-PLA copolymers to follow sustainable route. The incorporation of bio-based polymers demonstrates better inclusiveness to the environment and contributes to harmonious development. |
| WOS关键词 | POLYETHYLENE TEREPHTHALATE ; IONIC LIQUIDS ; POLY(ETHYLENE-TEREPHTHALATE) ; GLYCOLYSIS ; DEGRADATION ; CATALYSIS |
| 资助项目 | National Key Research and Development Program of China[2019YFC1908204] ; National Key Research and Development Program of China[2019YFC1908201] ; National Natural Scientific Fund of China[21878292] ; National Natural Scientific Fund of China[22178343] ; National Natural Scientific Fund of China[21908232] ; National Natural Scientific Fund of China[22178364] ; National Natural Scientific Fund of China[22178358] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2022048] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000878104900001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Key Research and Development Program of China ; National Natural Scientific Fund of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/55547]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Lu, Xingmei; Xia, Shuqian |
| 作者单位 | 1.Tianjin Univ, Key Lab Green Chem Technol, State Educ Minist, Sch Chem Engn & Technol, Tianjin 300350, Peoples R China 2.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, CAS Key Lab Green Proc Engn, Inst Proc Engn, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Qinghai Inst Salt Lakes, Qinghai 810008, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fang, Pengtao,Lu, Xingmei,Zhou, Qing,et al. Controlled alcoholysis of PET to obtain oligomers for the preparation of PET-PLA copolymer[J]. CHEMICAL ENGINEERING JOURNAL,2023,451:15. |
| APA | Fang, Pengtao.,Lu, Xingmei.,Zhou, Qing.,Yan, Dongxia.,Xin, Jiayu.,...&Xia, Shuqian.(2023).Controlled alcoholysis of PET to obtain oligomers for the preparation of PET-PLA copolymer.CHEMICAL ENGINEERING JOURNAL,451,15. |
| MLA | Fang, Pengtao,et al."Controlled alcoholysis of PET to obtain oligomers for the preparation of PET-PLA copolymer".CHEMICAL ENGINEERING JOURNAL 451(2023):15. |
入库方式： OAI收割
来源：过程工程研究所
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