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Low-volatility dye inks: enhanced stability through advanced analytical techniques
Researchers employ LF-NMR and UV–visible spectroscopy to develop dye inks with improved hygroscopicity and dispersibility. These findings pave the way for more stable and low-volatility formulations suitable for high-performance applications.
Ensuring stability and low-volatility in aqueous dye inks is crucial for their application in high-performance coatings and printing technologies. A recent study, published in the Journal of Coatings Technology and Research, explores innovative methods to enhance these properties by focusing on hygroscopicity and dispersibility.
The researchers utilised low-field nuclear magnetic resonance (LF-NMR) to monitor changes in water molecule states within ink solutions, revealing insights into hygroscopic behaviour. T2 relaxation times, derived from LF-NMR measurements, provided a rapid screening mechanism for inks with superior water retention properties. Complementing this, UV–visible spectroscopy was employed to analyse dispersibility by observing peak variations in the spectral data.
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Optimising ink formulations for better performance
Through rigorous testing, Ink 2 demonstrated enhanced hygroscopicity and dispersibility under optimal viscosity and surface tension conditions. These findings highlight the combined power of LF-NMR and UV–visible spectroscopy as tools for both ink design and quality evaluation. This approach not only establishes a framework for creating stable dye inks but also serves as a benchmark for future innovation in coatings technology.
Source: Ren, Y., Li, R. & Tian, Z., Research and preparation of low-volatility, high-stability dye inks. Journal of Coatings Technology and Research, 23, 557–568 (2026).
