Biodegradable composites for sustainable nutrient delivery in aquatic environment.
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| Title: | Biodegradable composites for sustainable nutrient delivery in aquatic environment. |
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| Authors: | Machado, Ana C.1 (AUTHOR) b13618@dep.uminho.pt, Castro, M. Cidália R.1 (AUTHOR) cidaliacastro@dep.uminho.pt, Duarte, F. M.1 (AUTHOR) fduarte@dep.uminho.pt |
| Source: | Polymer Bulletin. May2026, Vol. 83 Issue 5, p1-27. 27p. |
| Abstract: | This research aimed to obtain materials with controlled-release properties by compounding a commercial nitrogen-phosphorus-potassium fertilizer into biodegradable matrices, with or without used coffee grounds. Polybutylene adipate-co-terephthalate (PBAT) and a biodegradable polymer based on polylactic acid (PLA) were used as polymeric matrices. Upon compounding by extrusion, composites were converted into plates through compression molding to evaluate their morphological properties, water degradation capacity (weight loss), and subsequent nutrient release (catarometry and inductively coupled plasma optical emission spectrometry). Additionally, composites were injection molded and characterized for their mechanical properties to assess the effect of polymer type and filler content. The incorporation of spent coffee grounds by itself proved to be poor in nutrient release. However, in composites containing fertilizer, the addition of coffee grounds appears to influence water degradation and subsequent nutrients release. Scanning electron microscopy analysis highlighted the influence of coffee grounds as a degradation-enhancing agent. Furthermore, the inclusion of coffee grounds in the polymeric matrix increased the stiffness of the composites, which can be attributed to the intrinsic rigidity of lignocellulosic materials. [ABSTRACT FROM AUTHOR] |
| Copyright of Polymer Bulletin is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 191510177 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Biodegradable composites for sustainable nutrient delivery in aquatic environment. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Machado%2C+Ana+C%2E%22">Machado, Ana C.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> b13618@dep.uminho.pt</i><br /><searchLink fieldCode="AR" term="%22Castro%2C+M%2E+Cidália+R%2E%22">Castro, M. Cidália R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> cidaliacastro@dep.uminho.pt</i><br /><searchLink fieldCode="AR" term="%22Duarte%2C+F%2E+M%2E%22">Duarte, F. M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> fduarte@dep.uminho.pt</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Polymer+Bulletin%22">Polymer Bulletin</searchLink>. May2026, Vol. 83 Issue 5, p1-27. 27p. – Name: Abstract Label: Abstract Group: Ab Data: This research aimed to obtain materials with controlled-release properties by compounding a commercial nitrogen-phosphorus-potassium fertilizer into biodegradable matrices, with or without used coffee grounds. Polybutylene adipate-co-terephthalate (PBAT) and a biodegradable polymer based on polylactic acid (PLA) were used as polymeric matrices. Upon compounding by extrusion, composites were converted into plates through compression molding to evaluate their morphological properties, water degradation capacity (weight loss), and subsequent nutrient release (catarometry and inductively coupled plasma optical emission spectrometry). Additionally, composites were injection molded and characterized for their mechanical properties to assess the effect of polymer type and filler content. The incorporation of spent coffee grounds by itself proved to be poor in nutrient release. However, in composites containing fertilizer, the addition of coffee grounds appears to influence water degradation and subsequent nutrients release. Scanning electron microscopy analysis highlighted the influence of coffee grounds as a degradation-enhancing agent. Furthermore, the inclusion of coffee grounds in the polymeric matrix increased the stiffness of the composites, which can be attributed to the intrinsic rigidity of lignocellulosic materials. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Polymer Bulletin is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s00289-026-06314-8 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 27 StartPage: 1 Titles: – TitleFull: Biodegradable composites for sustainable nutrient delivery in aquatic environment. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Machado, Ana C. – PersonEntity: Name: NameFull: Castro, M. Cidália R. – PersonEntity: Name: NameFull: Duarte, F. M. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 01700839 Numbering: – Type: volume Value: 83 – Type: issue Value: 5 Titles: – TitleFull: Polymer Bulletin Type: main |
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