Performance comparison of coatings based on cellulose nanocrystals and microfibrillated cellulose for food packaging

• DOI: 10.1016/j.carpta.2022.100264
• Publication Date: 2022-11-30T07:53:28Z
• Authors: Ghislain Fotie; Stefano Gazzotti; Marco Aldo Ortenzi; Sara Limbo; Luciano Piergiovanni
• Keywords: Ammonium persulfate; Nanocellulose; Opacity

This article aimed at comparing gas barrier performance of plastic films coated with both cellulose nanocrystals (CNCs) and microfibrillated (MFC) obtained from cotton linters. CNCs were chemically isolated by ammonium persulfate (APS) hydrolysis, while the MFC was mechanically either APS-assisted pretreatment (MFCaps) or without (MFC). Initially, mechanical tests three samples performed their properties characterized dynamic light scattering, TEM, FTIR, TGA WAXS. Subsequently, PET water contact angle, transparency opacity evaluation following vapor oxygen transmission rates assessment 25°C/ 90% RH [0%-80% RH] respectively. Finally, diffusion solubility coefficients calculated using half-time method. The findings showed that, based on MFCaps display a much better under higher level residue when submitted to 700°C degradation compared CNCs.