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Chemical and Biochemical Engineering Quarterly, Vol. 38 No. 1, 2024.

Original scientific paper

https://doi.org/10.15255/CABEQ.2023.2197

Study on Alcoholysis of Waste PET and Its Application in Wood Modification

W. Xiang orcid id orcid.org/0009-0005-1742-0989 ; Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
Z. Li ; Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
B. Zhang ; Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
H. Tang orcid id orcid.org/0009-0005-1742-0989 ; Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
X. Yuan ; Ochemate Advanced Material Technologies Co, Huzhou, Zhejiang, China
T. Xz ; Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China

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Abstract

Polyethylene terephthalate (PET), a thermoplastic polyester, is frequently used in plastic packaging such as bottles, films, and synthetic fibers. Due to its slow degradation in the natural environment, the accumulation of PET in large quantities poses a serious threat to the ecosystem. In this study, camphor pine wood was impregnated with these products by first alcoholyzing the waste PET, followed by the creation of a functional resin. The process of PET binary alcoholysis and unsaturated polyester (UPR) synthesis successfully incorporated certain characteristic groups from the PET raw material structure into the subsequent products of each stage, and cured them into a bulk unsaturated polyester with p-phenylene structure. The curing reaction primarily occurred in the carbon-carbon double bonds, according to the FTIR analysis of the PET raw material and the products at each stage. Under ideal conditions, the vacuum impregnation enhancement modification of camphor pine led to a 52.1 % increase in compressive strength and a decrease in water absorption from 103.8 % to 42 %, effectively enhancing the wood’s compressive strength and resistance to water absorption.







This work is licensed under a Creative Commons Attribution 4.0 International License.

Keywords

vacuum impregnation; wood alteration; unsaturated polyester; PET recycling

Hrčak ID:

316517

URI

https://hrcak.srce.hr/316517

Publication date:

29.4.2024.

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