Depolymerization Recycling : Plastics Circularity.

Format:

Book

Author/Creator:

Mangold, Hannah.

Series:

De Gruyter STEM Series

Language:

English

Subjects (All):

Plastics.

Circular economy.

Physical Description:

1 online resource (160 pages)

Edition:

1st ed.

Place of Publication:

Berlin/Boston : Walter de Gruyter GmbH, 2026.

Summary:

Plastics, structural polymers made from monomers, are ubiquitous in modern life and have unique benefits.At their end of life, they must be reused or recycled in ways not yet implemented today.In many cases, the polymerization process can be efficiently reversed via depolymerization recycling to regain monomers at the original quality level.

Contents:

Intro

Acknowledgments

Preface

Contents

Abbreviations

1 Introduction

1.1 The energy, yield and CO2 emission dimensions of plastic recycling

1.2 The waste stream dimension of plastic recycling

2 Depolymerization: Reversing the Polymerization Reaction

2.1 Polymers from chain-growth polymerization

2.2 Polymers from step-growth polymerization

2.3 The role of catalysis

2.3.1 Acid/alkaline catalysts in depolymerization reactions

2.3.2 Organometallic catalysis

2.3.3 Ionic liquids

2.3.4 Enzymatic catalysis

2.3.5 Photocatalysis

3 Process engineering

3.1 Pretreatment of plastic waste

3.1.1 Shredding

3.1.2 Sorting

3.1.3 Washing

3.1.4 Pelletization and agglomeration

3.2 Reaction technology options

3.3 Monomer purification technologies

4 Practical depolymerization examples

4.1 Polystyrene (PS)

4.2 Polymethyl methacrylate (PMMA)

4.3 Polyesters

4.3.1 Methanolysis

4.3.2 Glycolysis

4.3.3 (Alkaline) Hydrolysis

4.3.4 Comparison of approaches for PET

4.3.5 Biodegradable polyesters and mixed polyester feedstocks

4.4 Polyamides

4.4.1 Polyamide 6

4.4.2 Polyamide 66

4.5 Polyurethanes

4.5.1 Glycolysis

4.5.1.1 Monophase glycolysis

4.5.1.2 Split-phase glycolysis

4.5.2 Hydrolysis

4.5.3 Acidolysis

4.5.4 Aminolysis

4.5.5 Ammonolysis

4.5.6 Hydrogenolysis and other options

4.5.7 Comparison of approaches for PU

4.6 Polycarbonates

4.7 Silicones

5 Economics and life cycle considerations

5.1 Economics of depolymerization recycling

5.2 Life cycle analysis (LCA)

5.3 Learnings from LCA and TEA for selected depolymerization processes

6 Design for depolymerization recycling

6.1 Design for recycling on a molecular level

6.2 Design for recycling on a product level

7 Outlook

Literature

Index.

Notes:

Description based on publisher supplied metadata and other sources.

Part of the metadata in this record was created by AI, based on the text of the resource.

ISBN:

3-11-166169-5

OCLC:

1586297041