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Monday, 16 December 2019
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Raw materials & technologies

UV-cured organic–inorganic hybrid moisture barrier materials

Wednesday, 11 September 2019

In a new study, a synthesised polymerisable quaternary ammonium salt (PQAS-18) was intercalated into inorganic sodium montmorillonite (Na-MMT) as an organic modifier via cationic exchange.

The researchers developed hybrid moisture barrier materials based on polybutadiene dimethacrylate. Source: Avenfor7 / Pixabay.

The researchers developed hybrid moisture barrier materials based on polybutadiene dimethacrylate. Source: Avenfor7 / Pixabay.

Afterward, a novel organic–inorganic hybrid material was prepared through in situ UV-curing technology and combined with a polymer matrix based on polybutadiene dimethacrylate (PBDMA).

PQAS-18 fixed the crosslinked network due to its double bond, thereby leading to firm bonding between the polymer matrix and organoclay; moreover, the study showed homogeneous dispersion of the lamellar structure in the polymer matrix.

Significant improvement of the moisture barrier

X-ray diffraction proved that the distance between Na-MMT layers increased, and water vapour transmission measurement showed that the moisture barrier property of cured hybrid film was remarkably improved.

The study is published in: Journal of Coatings Technology and Research  March 2019, Volume 16, Issue 2, pp 429–437.

Image source: Pixabay

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