Application for measuring the saponification degree of polyvinyl alcohol using near-infrared spectroscopic analysis!
Near Infrared Analyzer Technical Data 21 Petrochemicals Polyvinyl Alcohol Polyvinyl alcohol (PVA) has low toxicity, is less likely to adhere to proteins, and has film-forming properties, making it suitable for various pharmaceuticals (such as eye drops). PVA is a linear polymer and a copolymer of vinyl acetate and vinyl alcohol. The ratio of hydroxyl groups to all functional groups in the molecule is referred to as the saponification degree. This is an important indicator of the product's solubility, viscosity, and adhesiveness.
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PDF Page 2 《Free Download Available》 In traditional methods, the measurement of saponification value requires weighing the sample, dissolving it, heating and cooling it, and then titrating. This procedure can take up to 6 hours for a single sample. Unlike this widely used conventional method, near-infrared analyzers (NIR) can complete the measurement in just 1 minute. This application note will explain the measurement of saponification value using NIR. With NIR, it is also possible to establish quantitative methods for sodium acetate and volatile substances in addition to measuring saponification value.
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This is the application sheet for the metronome near-infrared spectrometer (NIRS). It is available for free download.
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Metronome Near-Infrared Analyzer OMNIS NIR Analyzer
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Combination of OMNIS NIR Analyzer and Sample Robot
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Metrom AG, based in Herisau, Switzerland, is a leading company specializing in ion analysis with over 70 years of history. It provides products and services in more than 140 countries worldwide. Based on Swiss technology developed over many years, the equipment comes with a 3-year warranty.