| Autor: |
Lotfy, Vivian F., Basta, Altaf H., Shafik, Emad S. |
| Předmět: |
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| Zdroj: |
Applied Nanoscience; Sep2023, Vol. 13 Issue 9, p6503-6518, 16p |
| Abstrakt: |
This work was done to develop cellulose nanostructures (CNSs) and carbon nanostructures as effective materials for valorization of agro and plastic wastes. In this respect, the CNSs were synthesized from different rice straw pulps and assessed their effect on the properties of polyesters (PEs) from hybrid RS–polyol and glycolysis polyethylene terephthalate waste (PETPW), in comparison with using graphene oxide (GO) and carbon oxide (CO) nanostructures. Further assessment was carried out on the modified polyester–HDPE nanocomposites. The nanostructure materials were characterized using transmission electron microscopy, X-ray diffraction, and FTIR spectroscopy. The FTIR, TGA, and mechanical properties of nano-based polyester were studied. It was found that nano-based polyester showed better thermal stability and mechanical properties compared to unmodified polyester. The cellulose nanostructures were more effective than carbon nanostructures. The loading of cellulose and carbon nanostructures led to improve the toughness of the nanopolyesters, it was increased by 67–300% for cellulose nanostructure-based polyesters, and 91–179% increased for carbon nanostructure-based polyesters. The optimum mechanical behavior of the nanopolyesters was obtained from incorporation of cellulose nanostructure of sulphite pulp precursor and graphene oxide. In agreement with the mechanical behavior of nanopolyester, the nanocellulose PE was more effective than nanocarbon PE on the mechanical assessment of high-density polyethylene (HDPE), the improvement in strength properties in a good relationship with particle dimension distribution of CNSs. The high-performance HDPE nanocomposites were related to the cellulose nanostructure from cotton linters and carbon oxide from sugarcane bagasse. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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