Paper coated with sonochemically synthesized zinc oxide nanoparticles: Enhancement of properties for preservation of documents, TAPPI JOURNAL January 2017

ABSTRACT: Sonochemically synthesized zinc oxide (ZnO) nanoparticles were coated on paper for enhancing its properties in view of the preservation of documents. The paper used for accession register was used as substrate. Physical, chemical, optical, hydrophobic, and antifungal properties of the coated and uncoated papers were com-pared. Nanoparticles were synthesized with ultrasound from organic precursors and were characterized by X-ray dif-fraction (XRD) and field emission scanning electron microscopy (FESEM), whereas coated and uncoated papers were examined following standard procedures as described by the Bureau of Indian Standards (BIS). It was observed that coating with nanoparticles imparted mechanical strength, water repellence, and antifungal properties to the paper without compromising its printability. Hence, coated paper is comparatively more suitable for preservation of writ-ten or printed documents than uncoated paper.

Application: In this work, we coated paper with sonochemically synthesized zinc oxide nanoparticles and explored various properties of the coated paper, including the antifungal property. It was observed that coating with nanoparticles imparts mechanical strength, water repellence, and antifungal properties without compromising print-ability. This enhanced the durability of accession register paper; hence, documents can be preserved for longer.

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