Preparation and Properties of Coated Paper with Dual Functionality of Moisture/Oil Resistance and Oxygen Barrier

LAI Ning; LIU Xiaofang; WAN Honghao; FAN Min; LI Li

doi:10.19554/j.cnki.1001-3563.2026.09.015

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Packaging Engineering ›› 2026, Vol. 47 ›› Issue (9) : 142-149. DOI: 10.19554/j.cnki.1001-3563.2026.09.015

Advanced Materials

Preparation and Properties of Coated Paper with Dual Functionality of Moisture/Oil Resistance and Oxygen Barrier

LAI Ning, LIU Xiaofang, WAN Honghao, FAN Min, LI Li^*

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Abstract

The work aims to explore the effects of coating formulation parameters on the water/oil resistance, moisture barrier, and oxygen barrier properties of coated paper, to screen the optimal formulations. PHA-Wax coated paper samples with a PHA content of 10%-30% and silane-crosslinked PVA-PEI-MMT coated paper samples with a HY-Si75 dosage of 0.07%-0.28% were prepared by combining water-based coating with hot pressing and regulating the PHA content in polyhydroxyalkanoate (PHA) wax emulsion (Wax) and the dosage of coupling agent (HY-Si75) in the polyvinyl alcohol (PVA)-polyethylenimine (PEI) system. The performance of coated paper samples with different formulations was comprehensively evaluated by testing water vapor permeability (WVP), oxygen transmission rate (OTR), Cobb value, and KIT rating. The PHA-Wax coating significantly improved the moisture, water, and oil resistance of the paper. PHA30% reduced the WVP from 2.03×10^-11 to 8.85×10^-13 g·cm/(cm²·s·Pa), lowered the Cobb (30 min) value to (9±3.56)g/m², and increased the KIT rating to 12. The PVA-PEI-MMT coating with 0.14% HY-Si75 showed the lowest OTR of (2.61±0.09)×10^-4 cm³/(m²⋅d⋅Pa). PHA30% and PVA-PEI-MMT with 0.14% HY-Si75 are identified as optimal formulations. The two systems are superior in moisture barrier, water and oil resistance, and oxygen barrier properties respectively, serving as the preferred combinations for subsequent assembly. This provides a theoretical basis for the engineering development of high-barrier paper-based packaging materials.

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coated paper / polyhydroxyalkanoate (PHA) / silane crosslinking / water vapor barrier / oxygen barrier

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LAI Ning, LIU Xiaofang, WAN Honghao, FAN Min, LI Li. Preparation and Properties of Coated Paper with Dual Functionality of Moisture/Oil Resistance and Oxygen Barrier[J]. Packaging Engineering. 2026, 47(9): 142-149 https://doi.org/10.19554/j.cnki.1001-3563.2026.09.015

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