Pineapple-Leaf-Derived, Copper-PAN-Modified Regenerated Cellulose Sheet Used as a Hydrogen Sulfide Indicator

Surached Thongboon; Thanaphat Chukeaw; Chalida Niamnuy; Supacharee Roddecha; Paweena Prapainainar; Metta Chareonpanich; Passakorn Kingwascharapong; Kajornsak Faungnawakij; Günther Rupprechter; Anusorn Seubsai

doi:10.1021/acsomega.3c01449

Pineapple-Leaf-Derived, Copper-PAN-Modified Regenerated Cellulose Sheet Used as a Hydrogen Sulfide Indicator

ACS Omega. 2023 May 2;8(19):17134-17142. doi: 10.1021/acsomega.3c01449. eCollection 2023 May 16.

Affiliations

¹ Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand.
² Center of Excellence on Petrochemical and Materials Technology, Kasetsart University, Bangkok 10900, Thailand.
³ Department of Fishery Products, Faculty of Fisheries, Kasetsart University, Bangkok 10900, Thailand.
⁴ National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand.
⁵ Institute of Materials Chemistry, Technische Universität Wien,Getreidemarkt 9/BC, Vienna 1060, Austria.

Abstract

Regenerated cellulose (RC) produced from waste pineapple leaves was used to develop a colorimetric sensor as a Cu-PAN sheet (RCS). Microcrystalline cellulose derived from dried pineapple leaves was combined with Cu-PAN, dissolved in NaOH and urea, and made into an RC sheet using Na₂SO₄ as a coagulant. The RCS was used as an H₂S indicator at various H₂S concentrations (0-50 ppm) and temperatures (5-25 °C). The RCS color changed from purple to New York pink when exposed to H₂S. A colorimeter method was used to develop prediction curves with values of R² > 0.95 for H₂S concentrations at 5-25 °C. The physicochemical properties of fresh and spent RCS were characterized using various techniques (Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy/energy-dispersive X-ray spectroscopy, and thermogravimetric analysis). In addition, when stored at 5 and 25 °C for 90 days, the RCS had outstanding stability. The developed RCS could be applied to food packaging as an intelligent indicator of meat spoilage.