SYNTHESIS OF NANOSILICA FROM AGRICULTURAL WASTE SUGAR BAGASS AND PREPARATION OF NANOSILICA COLLAGEN FOR COSMETIC

Abstract

Vietnam is a nation renowned for its agricultural production, which generates a vast quantity of agricultural waste annually. Improper and untimely management of these agricultural byproducts can lead to detrimental effects on the environment and public health. Notably, agricultural wastes such as rice husks, sugarcane bagasse, and corncobs are rich in silica, presenting an opportunity to utilize these materials for the synthesis of nanosilica. Nanosilica is a versatile material with extensive applications in diverse fields, including drug delivery, cosmetics, construction material additives, and environmental remediation. This research focuses on using sugarcane bagasse, an agricultural waste, for the production of nanosilica, and then prepares nanosilica collagen used in cosmetic ingredients. Scanning Electron Microscopy (SEM) results reveal that the synthesized nanosilica particles are spherical with an average size ranging from approximately 25 to 30 nm. Collagen-modified nanosilica, the product of the modification process, also exhibits a spherical morphology with a slightly larger average size, approximately 30 to 40 nm. Analysis of N₂ adsorption-desorption isotherms (BET) indicates that the nanosilica material possesses a stable porous structure and exhibits good absorption capacity, rendering it suitable for cosmetic applications by promoting a dry and smooth product texture, enhancing the adsorption of active ingredients within the cosmetic formulation, and facilitating efficient release upon application to the skin.