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Efficiently production of micron-sized polyethylene terephthalate (PET) powder from waste polyester fibre by physicochemical method

journal contribution
posted on 2021-02-01, 00:00 authored by Linli Gan, Zhiheng Xiao, Heng Pan, Weilin Xu, Yunli Wang, Xungai Wang
Polyester has the highest share of world fibre market, which also leads to a large volume of polyester waste. In this study, a compact process combining alkali treatment and stone milling was used to recycle waste polyester fibre into ultrafine powder efficiently. The morphology of the original polyester fibre, alkali modified fibre and milled polyester powder were observed by Scanning electronic microscopy (SEM) and atomic force microscope (AFM). The particle size, crystallinity and strength loss were also studied. It was found that the alkali treatment greatly reduced fibre strength and the crystallinity of the fibre largely decreased after stone milling. The waste polyester fibre was converted into micron powders easily and efficiently. About 700 g dry ultrafine powders with particle size of around 60 µm were achieved in 2 h. This method shows a great potential for industrial application of waste polyester in the future.

History

Journal

Advanced Powder Technology

Volume

32

Pagination

630-636

Location

Amsterdam, Netherlands

ISSN

0921-8831

eISSN

1568-5527

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2021, Society of Powder Technology Japan

Issue

2

Publisher

Elsevier BV