Ethylene gas scavenging properties of nano-silica isolated from rice straw and of its PVA-based formulation coated on duplex paperboard made from softwood and rice straw

Autor: Saini, Shashank, Kardam, Saurabh Kumar, Kadam, Ashish A., Singh, Surendra Pratap, Kumar, Vivek, Gaikwad, Kirtiraj K.
Zdroj: Biomass Conversion and Biorefinery; 20240101, Issue: Preprints p1-10, 10p
Abstrakt: Utilization of rice straw (RS) was demonstrated to the maximum possible extent in making value-added products intended for active food packaging applications. Rice straw was used as a starting material for extracting pure silica via a relatively green route, i.e., using minimum chemicals. The size of the silica particles was in the range of 60–80 nm. The silica was further characterized for purity, composition, and surface properties. The X-ray diffractogram suggested that the nano-silica was free from impurities, namely alkaline earth metals, and silicates. A duplex paperboard was made by sandwiching 200 g·m−2rice straw sheet between two softwood pulp sheets, each of 50 g·m−2. The duplex paperboard coated with nano-silica/poly(vinyl alcohol) formulation had improved barrier, mechanical, and surface properties with higher ethylene scavenging activity than uncoated paperboard. The coated duplex paperboard exhibited the potential to be a value-added product made from rice straw which is perceived as an agro-residue.
Databáze: Supplemental Index
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