Efficient recycling pathway of bio-based composite polyurethane foams via sustainable diamine
Aminolysis is widely recognized as a valuable chemical route for depolymerizing polymeric materials containing ester, amide, or urethane functional groups, including polyurethane foams. Bio-based polyurethane foams, pristine and reinforced with 40 wt% of sustainable fillers, were depolymerized in th...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Ecotoxicology and Environmental Safety |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651323012629 |
| _version_ | 1827576512805601280 |
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| author | Federica Recupido Giuseppe Cesare Lama Sebastian Steffen Christian Dreyer Holger Seidlitz Vincenzo Russo Marino Lavorgna Ferdinando De Luca Bossa Selena Silvano Laura Boggioni Letizia Verdolotti |
| author_facet | Federica Recupido Giuseppe Cesare Lama Sebastian Steffen Christian Dreyer Holger Seidlitz Vincenzo Russo Marino Lavorgna Ferdinando De Luca Bossa Selena Silvano Laura Boggioni Letizia Verdolotti |
| author_sort | Federica Recupido |
| collection | DOAJ |
| description | Aminolysis is widely recognized as a valuable chemical route for depolymerizing polymeric materials containing ester, amide, or urethane functional groups, including polyurethane foams. Bio-based polyurethane foams, pristine and reinforced with 40 wt% of sustainable fillers, were depolymerized in the presence of bio-derived butane-1,4-diamine, BDA. A process comparison was made using fossil-derived ethane-1,2-diamine, EDA, by varying amine/polyurethane ratio (F/A, 1:1 and 1:0.6). The obtained depolymerized systems were analyzed by FTIR and NMR characterizations to understand the effect of both diamines on the degradation pathway. The use of bio-based BDA seemed to be more effective with respect to conventional EDA, owing to its stronger basicity (and thus higher nucleophilicity), corresponding to faster depolymerization rates. BDA-based depolymerized systems were then employed to prepare second-generation bio-based composite polyurethane foams by partial replacement of isocyanate components (20 wt%). The morphological, mechanical, and thermal conductivity properties of the second-generation polyurethane foams were evaluated. The best performances (σ10 %=71 ± 9 kPa, λ = 0.042 ± 0.015 W∙ m-1 ∙K-1) were attained by employing the lowest F/A ratio (1:0.6); this demonstrates their potential application in different sectors such as packaging or construction, fulfilling the paradigm of the circular economy. |
| first_indexed | 2024-03-08T21:13:32Z |
| format | Article |
| id | doaj.art-9aff6a16cee94159ac6d2311b9ed30b2 |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-03-08T21:13:32Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-9aff6a16cee94159ac6d2311b9ed30b22023-12-22T05:31:47ZengElsevierEcotoxicology and Environmental Safety0147-65132024-01-01269115758Efficient recycling pathway of bio-based composite polyurethane foams via sustainable diamineFederica Recupido0Giuseppe Cesare Lama1Sebastian Steffen2Christian Dreyer3Holger Seidlitz4Vincenzo Russo5Marino Lavorgna6Ferdinando De Luca Bossa7Selena Silvano8Laura Boggioni9Letizia Verdolotti10Institute of Polymers, Composites and Biomaterials, Italian National Research Council, P.le. E. Fermi 1, 80055 Portici, Naples, ItalyInstitute of Polymers, Composites and Biomaterials, Italian National Research Council, P.le. E. Fermi 1, 80055 Portici, Naples, ItalyFraunhofer-Institute for Applied Polymer Research IAP Research Division Polymeric Materials and Composites PYCO, Schmiedestrasse 5, 15745 Wildau, GermanyFraunhofer-Institute for Applied Polymer Research IAP Research Division Polymeric Materials and Composites PYCO, Schmiedestrasse 5, 15745 Wildau, GermanyFraunhofer-Institute for Applied Polymer Research IAP Research Division Polymeric Materials and Composites PYCO, Schmiedestrasse 5, 15745 Wildau, GermanyDepartment of Chemical Sciences, University of Naples, Federico II, Via Cinthia 4, 80126 Naples, ItalyInstitute of Polymers, Composites and Biomaterials, Italian National Research Council, P.le. E. Fermi 1, 80055 Portici, Naples, ItalyInstitute of Polymers, Composites and Biomaterials, Italian National Research Council, P.le. E. Fermi 1, 80055 Portici, Naples, ItalyInstitute of Chemical Sciences and Technologies “G. Natta, Italian National Research Council, Via A. Corti 12, 20133 Milan, ItalyInstitute of Chemical Sciences and Technologies “G. Natta, Italian National Research Council, Via A. Corti 12, 20133 Milan, Italy; Corresponding authors.Institute of Polymers, Composites and Biomaterials, Italian National Research Council, P.le. E. Fermi 1, 80055 Portici, Naples, Italy; Corresponding authors.Aminolysis is widely recognized as a valuable chemical route for depolymerizing polymeric materials containing ester, amide, or urethane functional groups, including polyurethane foams. Bio-based polyurethane foams, pristine and reinforced with 40 wt% of sustainable fillers, were depolymerized in the presence of bio-derived butane-1,4-diamine, BDA. A process comparison was made using fossil-derived ethane-1,2-diamine, EDA, by varying amine/polyurethane ratio (F/A, 1:1 and 1:0.6). The obtained depolymerized systems were analyzed by FTIR and NMR characterizations to understand the effect of both diamines on the degradation pathway. The use of bio-based BDA seemed to be more effective with respect to conventional EDA, owing to its stronger basicity (and thus higher nucleophilicity), corresponding to faster depolymerization rates. BDA-based depolymerized systems were then employed to prepare second-generation bio-based composite polyurethane foams by partial replacement of isocyanate components (20 wt%). The morphological, mechanical, and thermal conductivity properties of the second-generation polyurethane foams were evaluated. The best performances (σ10 %=71 ± 9 kPa, λ = 0.042 ± 0.015 W∙ m-1 ∙K-1) were attained by employing the lowest F/A ratio (1:0.6); this demonstrates their potential application in different sectors such as packaging or construction, fulfilling the paradigm of the circular economy.http://www.sciencedirect.com/science/article/pii/S0147651323012629Chemical recyclingAminolysisBio-based diaminesBio-based PUR foamsSecond generation-composite PUR foamsSustainability |
| spellingShingle | Federica Recupido Giuseppe Cesare Lama Sebastian Steffen Christian Dreyer Holger Seidlitz Vincenzo Russo Marino Lavorgna Ferdinando De Luca Bossa Selena Silvano Laura Boggioni Letizia Verdolotti Efficient recycling pathway of bio-based composite polyurethane foams via sustainable diamine Ecotoxicology and Environmental Safety Chemical recycling Aminolysis Bio-based diamines Bio-based PUR foams Second generation-composite PUR foams Sustainability |
| title | Efficient recycling pathway of bio-based composite polyurethane foams via sustainable diamine |
| title_full | Efficient recycling pathway of bio-based composite polyurethane foams via sustainable diamine |
| title_fullStr | Efficient recycling pathway of bio-based composite polyurethane foams via sustainable diamine |
| title_full_unstemmed | Efficient recycling pathway of bio-based composite polyurethane foams via sustainable diamine |
| title_short | Efficient recycling pathway of bio-based composite polyurethane foams via sustainable diamine |
| title_sort | efficient recycling pathway of bio based composite polyurethane foams via sustainable diamine |
| topic | Chemical recycling Aminolysis Bio-based diamines Bio-based PUR foams Second generation-composite PUR foams Sustainability |
| url | http://www.sciencedirect.com/science/article/pii/S0147651323012629 |
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