فهرست نشریات علمی دسترسی آزاد ایران

Cellulose-based paper is widely used in sustainable food packaging; however, its inherent limitations in barrier and mechanical properties restrict broader application. This study investigates the role of poly-dimethylsiloxane (PDMS) as an anti-blocking agent in water-based coatings applied to ivory board, kraft paper, and machine-glazed (MG) paper. Three coating formulations were evaluated: a control without PDMS (STD), and formulations containing 0.2 g of PDMS (T-1) and 0.5 g of PDMS (T-2). Coating performance was assessed for blocking resistance, rheological stability, surface friction, coating integrity, barrier properties, and mechanical performance under different storage conditions. The results demonstrate that PDMS incorporation significantly improves anti-blocking behavior, reduces the coefficient of friction, and enhances mechanical durability without compromising water resistance. The formulation with higher PDMS content (T-2) exhibited the most balanced and stable performance during storage, showing improved surface uniformity, lower friction, and enhanced sealing and rub resistance. Substrate-dependent behavior was observed: smooth, dense papers favored uniform surface film formation, while porous substrates promoted coating penetration and mechanical interlocking. These findings highlight the importance of optimizing PDMS concentration and substrate selection to develop high-performance, eco-friendly paper-based coatings for sustainable packaging applications.