Gas Barrier and Various Properties of Modified Inorganic Filler/Polyethylene Composite Packaging Films

CHENG Yongfen; WANG Honglei; WANG Yidan; ZHANG Yusheng; ZHONG Yunyun; CHEN Guojian; XIAO Naiyu

doi:10.19554/j.cnki.1001-3563.2026.11.009

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Packaging Engineering ›› 2026, Vol. 47 ›› Issue (11) : 84-93. DOI: 10.19554/j.cnki.1001-3563.2026.11.009

Advanced Materials

Gas Barrier and Various Properties of Modified Inorganic Filler/Polyethylene Composite Packaging Films

CHENG Yongfen^1,3,4, WANG Honglei^1,3,4, WANG Yidan², ZHANG Yusheng², ZHONG Yunyun^1,3,4, CHEN Guojian^1,3,4*, XIAO Naiyu^1,3,4

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Abstract

The work aims to enhance the gas barrier property of packaging films while maintaining their overall properties. The modified halloysite nanotubes and expanded graphite were blended with polyethylene to fabricate packaging films with high gas barrier property. The effects of nano-fillers' type, size, surface modification, and addition amount on the fabricated films' micro-structure, hydrophilicity, gas barrier property, mechanical property, and light transmission were studied. The results showed that the halloysite nanotubes modified by KH570 silane coupling agent exhibited better compatibility with the polyethylene matrix. When the filler content was 30%, the barrier properties of the composite films reached their optimum, with the water vapor permeability and oxygen permeability reduced by 90.21% and 88.45% respectively; At a loading of 5%, the mechanical properties were optimal, with tensile strength and elongation at break increased by 38.05% and 59.47% respectively. Balancing barrier and mechanical properties, and considering application requirements, a filler loading range of 5%-15% was recommended. When the loading exceeded 30%, the films failed to meet the practical application requirements for packaging materials. In conclusion, the KH570-modified illite nanotubes exhibit good compatibility with polyethylene. The mechanical properties of the films are optimal at a 5% loading; the barrier properties are the best at a 30% loading, with water vapor and oxygen permeability reduced by up to 90%. This research provides theoretical and technical basis for the development and application of novel high gas-barrier packaging films.

Key words

gas-barrier properties / polyethylene / halloysite nanotubes / expanded graphite / blending

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CHENG Yongfen, WANG Honglei, WANG Yidan, ZHANG Yusheng, ZHONG Yunyun, CHEN Guojian, XIAO Naiyu. Gas Barrier and Various Properties of Modified Inorganic Filler/Polyethylene Composite Packaging Films[J]. Packaging Engineering. 2026, 47(11): 84-93 https://doi.org/10.19554/j.cnki.1001-3563.2026.11.009

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