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Improving compatibility between coffee or black tea ground wastes and polymer matrix via silane treatment for production sustainable biofillers
Abstrakt
The incorporation of bio-waste products into polymer materials as a fillers and colorants represents a highly significant approach for developing sustainable composites, aligning with the principles of a circular bioeconomy and contributing to reduced environmental impact. In this study, coffee grounds (CG) and black tea grounds (BTG), two mainstream food processing by-products, were employed as bio-fillers and pigments for ethylene-norbornene (EN) composites. The effects of hydrophobic treatment with (3-aminopropyl)triethoxysilane (APTS) on CG and BTG powders were compared to those of untreated bio-fillers with respect to dispersion, color characteristics, mechanical properties, and UV aging stability of the polymer composites subjected to 50, 100, 200 and 300 h of UV aging. Both the waste additives and the resulting composites were characterized through Fourier-transform infrared (FTIR) spectroscopy, tensile testing, thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and spectrophotometric method. The obtained results demonstrated that the silanization of CG and BTG bio-fillers improved their dispersion within the EN matrix, consequently enhancing the UV aging resistance of the polymer composites. The EN/CG-APTS composite exhibited the best mechanical properties during the aging process, with the highest aging factor value of 0.6 after 300 h. On the other hand, the EN/BTG-APTS composite showed the smallest color change (ΔE = 7.8) after 300 h of aging. These findings indicate that improving the compatibility of bio-fillers with the polymer matrix can further increase their application potential in sustainable polymer materials technology.
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Autorzy (3)
-
Bolesław Szadkowski
-
Anna Marzec
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Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuły w czasopismach
- Opublikowano w:
-
Scientific Reports
nr 15,
ISSN: 2045-2322 - Język:
- angielski
- Rok wydania:
- 2025
- Opis bibliograficzny:
- Szadkowski B., Śliwka-Kaszyńska M., Marzec A.: Improving compatibility between coffee or black tea ground wastes and polymer matrix via silane treatment for production sustainable biofillers// Scientific Reports -,iss. 1 (2025),
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1038/s41598-025-97980-7
- Weryfikacja:
- Politechnika Gdańska
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