开发一种基于NMR的量化方法,用于VAE类型粘合剂/乳液中的主要成分
Jiajia Niu1, Aimin He2, Feng Gao3
1Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China.
BMC chemistry
|July 3, 2025
概括
准确测试VAE粘合剂至关重要. 一种使用内部标准的新型1HNMR方法提供了精确量化氧化,乙烯和乙烯醇成分的方法,其性能优于正常化方法.
科学领域:
- 聚合物化学 聚合物化学
- 分析化学 分析化学
背景情况:
- 精确量化乙乙烯 (VAE) 类型粘合剂和乳液中主要成分对于质量控制至关重要.
- 现有的方法可能缺乏精度或效率来分析VAE的核心成分:氧化,乙烯和乙烯醇组.
研究的目的:
- 建立一种可靠和有效的方法来量化VAE类型粘合剂/乳液的主要成分.
- 为了比较基于1H NMR规范化和基于内部标准的量化方法的有效性.
主要方法:
- 研究了干燥的VAE样本的溶解性,确定了二甲基硫氧化物 (DMSO) 作为最佳溶剂.
- 在1H NMR光谱中分配的质子化学转移用于氧基,乙烯基和乙烯基醇组.
- 开发并验证了一种使用基酸的1H NMR内部基于标准的量化方法.
主要成果:
- 1H NMR内部标准方法显示出高精度,与氧基基量定量的经典方法非常相匹配.
- 已确定的方法表现出极好的可重复性 (RSD < 5%) 和可重复性 (乙烯基和氧乙烯基的RSD < 5%,乙烯基酒精的RSD < 11.24%).
- 由于高度和时间要求,13C NMR内部标准方法被认为不合适.
结论:
- 一种基于1H NMR内部标准的量化方法被确立为一种适合于确定VAE类型粘合剂/乳液中主要成分的技术.
- 这种方法提供了准确,可重复和可重复的结果,增强了VAE分析.
- 该研究强调了1H NMR内部标准化的优点,而不是正常化和13C NMR用于VAE组件分析的优点.
相关概念视频
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01:10Volatilization
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