Delamination of polyamide/polyolefin multilayer films by selective glycolysis of polyurethane adhesive
Recycling of multilayer packaging is challenging due to the heterogeneity of plastic types that can be comingled by chemical bonding with adhesives. For this purpose, delamination of polyamide(PA)/polyolefin (PO) multilayers, glued together by polyurethane (PUR), was investigated. A previous method,...
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| Veröffentlicht in: | Green chemistry : an international journal and green chemistry resource : GC 2022-09, Vol.24 (18), p.6867-6878 |
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| container_title | Green chemistry : an international journal and green chemistry resource : GC |
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| creator | O'Rourke, Galahad Houbrechts, Margot Nees, Marthe Roosen, Martijn De Meester, Steven De Vos, Dirk |
| description | Recycling of multilayer packaging is challenging due to the heterogeneity of plastic types that can be comingled by chemical bonding with adhesives. For this purpose, delamination of polyamide(PA)/polyolefin (PO) multilayers, glued together by polyurethane (PUR), was investigated. A previous method, using solvent targeted dissolution-precipitation (STRAP) for fractionation of the outer plastic layers (PO or PA) gave mixed fractions. In contrast, specifically targeting the PUR adhesive by glycolysis-depolymerization accomplished highly selective separation. A single processing step at mild temperatures in sustainable solvents based on ethylene glycol oligomers, detached the PA from the PO fraction, leading to split films without impurities. This study is the first of its kind to analyze the chemistry of delamination in depth and introduces a process that could be generally applicable for a multitude of other multilayers that are bonded by PUR adhesives.
Sustainable solvent mediated recycling of plastic multilayer packaging by splitting of polyurethane adhesive glue. |
| doi_str_mv | 10.1039/d2gc01531e |
| format | Article |
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Sustainable solvent mediated recycling of plastic multilayer packaging by splitting of polyurethane adhesive glue.</description><subject>Adhesives</subject><subject>Chemical bonds</subject><subject>Delamination</subject><subject>Depolymerization</subject><subject>Ethylene glycol</subject><subject>Fractionation</subject><subject>Glycolysis</subject><subject>Green chemistry</subject><subject>Heterogeneity</subject><subject>Impurities</subject><subject>Multilayers</subject><subject>Packaging</subject><subject>Polyamide resins</subject><subject>Polyamides</subject><subject>Polyolefins</subject><subject>Polyurethane</subject><subject>Polyurethane resins</subject><subject>Solvents</subject><issn>1463-9262</issn><issn>1463-9270</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNpFkN9LwzAUhYMoOKcvvgsB34S63LTpj0fZ5hQGvuhzSdObLSNtZtIK_e_tnM6nezh8nAsfIbfAHoHFxazmG8VAxIBnZAJJGkcFz9j5Kaf8klyFsGMMIEuTCdELtLIxreyMa6nTdO_sMBY1zg7JWdSmpU1vO2PlgJ5qY5tAq4EGtKg684V0Ywc1ssGEv4HeY7eVLVJZbzGMzDW50NIGvPm9U_LxvHyfv0Trt9Xr_GkdKZ5DFxW1Rs5ELlJVFwxiBBx7jXWhVFLpREnBJADWSlSxRM4lVFVW5VUGSikt4im5P-7uvfvsMXTlzvW-HV-WPAOR5zlkB-rhSCnvQvCoy703jfRDCaw8eCwXfDX_8bgc4bsj7IM6cf-e428U4HLS</recordid><startdate>20220920</startdate><enddate>20220920</enddate><creator>O'Rourke, Galahad</creator><creator>Houbrechts, Margot</creator><creator>Nees, Marthe</creator><creator>Roosen, Martijn</creator><creator>De Meester, Steven</creator><creator>De Vos, Dirk</creator><general>Royal Society of Chemistry</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7ST</scope><scope>7U6</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0002-1356-3676</orcidid><orcidid>https://orcid.org/0000-0003-0490-9652</orcidid></search><sort><creationdate>20220920</creationdate><title>Delamination of polyamide/polyolefin multilayer films by selective glycolysis of polyurethane adhesive</title><author>O'Rourke, Galahad ; Houbrechts, Margot ; Nees, Marthe ; Roosen, Martijn ; De Meester, Steven ; De Vos, Dirk</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c281t-9dfe205856cd9013e1e281fed9cc4bf4ca50a11edc5b3ae22a1bb7b8b71cccf53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Adhesives</topic><topic>Chemical bonds</topic><topic>Delamination</topic><topic>Depolymerization</topic><topic>Ethylene glycol</topic><topic>Fractionation</topic><topic>Glycolysis</topic><topic>Green chemistry</topic><topic>Heterogeneity</topic><topic>Impurities</topic><topic>Multilayers</topic><topic>Packaging</topic><topic>Polyamide resins</topic><topic>Polyamides</topic><topic>Polyolefins</topic><topic>Polyurethane</topic><topic>Polyurethane resins</topic><topic>Solvents</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>O'Rourke, Galahad</creatorcontrib><creatorcontrib>Houbrechts, Margot</creatorcontrib><creatorcontrib>Nees, Marthe</creatorcontrib><creatorcontrib>Roosen, Martijn</creatorcontrib><creatorcontrib>De Meester, Steven</creatorcontrib><creatorcontrib>De Vos, Dirk</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Environment Abstracts</collection><collection>Sustainability Science Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Materials Research Database</collection><jtitle>Green chemistry : an international journal and green chemistry resource : GC</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>O'Rourke, Galahad</au><au>Houbrechts, Margot</au><au>Nees, Marthe</au><au>Roosen, Martijn</au><au>De Meester, Steven</au><au>De Vos, Dirk</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Delamination of polyamide/polyolefin multilayer films by selective glycolysis of polyurethane adhesive</atitle><jtitle>Green chemistry : an international journal and green chemistry resource : GC</jtitle><date>2022-09-20</date><risdate>2022</risdate><volume>24</volume><issue>18</issue><spage>6867</spage><epage>6878</epage><pages>6867-6878</pages><issn>1463-9262</issn><eissn>1463-9270</eissn><abstract>Recycling of multilayer packaging is challenging due to the heterogeneity of plastic types that can be comingled by chemical bonding with adhesives. 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| fulltext | fulltext |
| identifier | ISSN: 1463-9262 |
| ispartof | Green chemistry : an international journal and green chemistry resource : GC, 2022-09, Vol.24 (18), p.6867-6878 |
| issn | 1463-9262 1463-9270 |
| language | eng |
| recordid | cdi_rsc_primary_d2gc01531e |
| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Adhesives Chemical bonds Delamination Depolymerization Ethylene glycol Fractionation Glycolysis Green chemistry Heterogeneity Impurities Multilayers Packaging Polyamide resins Polyamides Polyolefins Polyurethane Polyurethane resins Solvents |
| title | Delamination of polyamide/polyolefin multilayer films by selective glycolysis of polyurethane adhesive |
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