Construction of durable polyurea/polyvinylidene chloride composite film with high water vapor barrier property

Development of high barrier-coated white cardboard for fruit preservation

“…Notably, the increase in breaking force and breaking strength was 84% compared with the WC substrate as a reference. This may be because PVDC itself had the characteristics of high toughness, 37,38 so that the mechanical properties of PVDC emulsion-coated WC were also improved compared with the WC substrate. It is well accepted that the low mechanical strength is one of the main obstructions to the development of paper-based materials in packaging applications.…”

Monomer diffusion tendencies in complex-shaped materials by vapor deposition polymerization

“…Among the polymer thin films that can be deposited by VDP, we selected polyurea. Polyurea has a low water vapor permeability, making it an excellent gas barrier film, 23,24) suitable for use as a protective film in MEMS devices. Moreover, the hydrogen bonding between the polyurea molecular chains contributes to its excellent mechanical durability.…”