Document Type

Article

Publication Date

4-17-2024

Abstract

New antibacterial properties of a composite made from thermally treated white scallop shell powder (TWWSSP) and modified polylactide (MPLA) are described. The carbonate waste was calcined at 1000 °C to produce calcium oxide (CaO) and calcium hydroxide (Ca(OH)2). The content and structure of the calcined product were examined using energy dispersive spectrometry, Fourier transform infrared spectroscopy and X-ray diffraction. TWWSSP was tested to establish its efficacy as a bactericidal component when combined with MPLA to produce composites. Infrared spectroscopy, tensile, and morphological research revealed that TWWSSP and PLA adhered better to composites and were more compatible than PLA/WWSSP composites. The results of the MTT assay and cell adhesion test of composites revealed that the relative growth rate of Mus dunni fibroblast (MDFB) cells rose with increasing TWWSSP concentration in the composites, indicating that the composites were not cytotoxic. Aside from that, MPLA composites including TWWSSP demonstrated significantly increased antibacterial activity of TWWSSP and MPLA, with the highest results obtained with MPLA and TWWSSP. MPLA/TWWSSP and PLA/WWSSP composites have excellent antibacterial and biodegradable qualities, making them ideal for a wide range of applications, particularly food packaging and biomedical products.

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