Tin(ii) 2-ethylhexanoate catalysed methanolysis of end-of-life poly(lactide)

被引：37

作者：

Hofmann, Melanie ^{[1
]}

Alberti, Christoph ^{[1
]}

Scheliga, Felix ^{[2
]}

Meissner, Roderich R. ^{[1
]}

Enthaler, Stephan ^{[1
]}

机构：

[1] Univ Hamburg, Inst Anorgan & Angew Chem, Martin Luther King Pl 6, D-20146 Hamburg, Germany

[2] Univ Hamburg, Inst Tech & Makromol Chem, Bundesstr 45, D-20146 Hamburg, Germany

来源：

POLYMER CHEMISTRY | 2020年 / 11卷 / 15期

关键词：

RING-OPENING POLYMERIZATION; HIGH-MOLECULAR-WEIGHT; POLYLACTIC ACID; LACTIC-ACID; CYCLE ASSESSMENT; IONIC LIQUIDS; ALKYL LACTATE; BIODEGRADATION; DEGRADATION; POLY(L-LACTIDE);

D O I：

10.1039/d0py00292e

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In recent times, plastics derived from renewable resources have received significant consideration as alternatives to plastics based on fossil resources. Nevertheless, some challenging issues, for instance the embedding of these plastics in a future circular economy, are currently under investigation. In this regard, recycling by applying chemical methodologies to reconvert the monomers would be a useful process. The selective depolymerisation/degradation of end-of-life poly(lactide) (EoL-PLA) plastics via methanolysis was explored in the presence of the industrially relevant catalyst tin(ii) 2-ethylhexanoate (Sn(Oct)(2)). EoL-PLAs used in daily life were successfully degraded to methyl lactate utilising microwave heating. Outstanding turnover frequencies of up to 39 600 h(-1) were observed.

引用

页码：2625 / 2629

页数：5

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