Wash Fastness of Hybrid AlOx-PET Fabrics Created via Vapor-Phase Infiltration AITranslate

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DOI：https://doi.org/10.1021/acsapm.1c01851

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Vapor-phase infiltration (VPI) infuses polymers with metalorganics to create organic–inorganic hybrid materials with properties distinct from the parent polymer. While many studies exist demonstrating the utility of VPI, few studies investigate the stability of the chemical structure and properties of the hybrid material under long-term use conditions. Herein, the durability to simulated washing of AlOx-poly(ethylene terephthalate) hybrid fabrics prepared via VPI with trimethylaluminum (TMA) and water vapor at temperatures 60, 80, 100, 120, and 140 °C under excess TMA infiltration conditions is investigated. The inorganic loading of the fabrics varies with VPI process temperature, with fabrics prepared below 100 °C containing ∼25 wt % inorganic and fabrics prepared above 100 °C having ∼17 wt % inorganic as measured by thermogravimetric analysis. Consistent with literature reports, AlOx-PET fabrics exhibit changes in color and photoluminescence that vary with the infiltration temperature. Fabrics infiltrated at lower temperatures (100 °C and below) with high inorganic loading lose a significant quantity of inorganic following washing. This loss is attributed to the formation of highly brittle, oxide-rich hybrid layers near the fibers’ surfaces that delaminate and are removed during the washing process. Decreasing the inorganic loading of fabrics at these low infiltration temperatures (by controlling the relative precursor/fabric quantity) improves the wash durability of these hybrid fabrics. At higher infiltration temperatures, a negligible amount of inorganic is lost. In addition to these physical changes, differences in the photoluminescence and chemical structure, indicated by infrared spectroscopy, are observed for all fabrics and provide insights into their chemical structure and degradation pathways.