Chemical Recycling of Polycarbonates via Ammonolysis and Polycaprolactones by KOH-Catalyzed Methanolysis

Shaikh, Tanveer Mahmadalli; Sudalai, Arumugam; Cho, Kanghee; Jo, Changbum

doi:10.1002/ejoc.202301308

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Chemical Recycling of Polycarbonates via Ammonolysis and Polycaprolactones by KOH-Catalyzed Methanolysis

Shaikh, Tanveer Mahmadalli;
Sudalai, Arumugam;
Cho, Kanghee;
Jo, Changbum

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19

초록

Chemical recycling polymer waste is a highly required technology to follow the current carbon-neutral trend. Here, we present practical recycling methods for poly (bisphenol A carbonate) (PC) and poly(epsilon-caprolactone) (PCL). PC can be converted to bisphenol A and urea with excellent product yield at 80 degrees C via ammonolysis using ammonium salt (ammonium-formate or -carbonate) instead of liquid ammonia that is usually used in previous PC recycling. PCL can be converted to methyl 6-hydroxy-hexanoate monomer with excellent yield at 80 degrees C via methanolysis catalyzed by KOH.

키워드

Depolymerization; Recycling; Polycarbonate; Polycaprolactone; Transesterification; BISPHENOL-A; WASTE PLASTICS; REDUCTIVE DEPOLYMERIZATION; IONIC LIQUIDS; ALCOHOLYSIS; POLYMERS; POLY(BISPHENOL; DEGRADATION; CARBONATE); EFFICIENT

제목: Chemical Recycling of Polycarbonates via Ammonolysis and Polycaprolactones by KOH-Catalyzed Methanolysis

저자: Shaikh, Tanveer Mahmadalli; Sudalai, Arumugam; Cho, Kanghee; Jo, Changbum

DOI: 10.1002/ejoc.202301308

발행일: 2024-03-11

유형: Article

저널명: European Journal of Organic Chemistry

권: 27

호: 10