通过减弱总反射-红外光谱和化学测量来快速预测宁热性质
Luke A Riddell1, Jean-Pierre B Lindner2, Peter de Peinder3,4
1Organic Chemistry & Catalysis, Institute for Sustainable and Circular Chemistry, Faculty of Science, Utrecht University, 3584CG, Utrecht, The Netherlands.
ChemSusChem
|January 9, 2024
概括
快速红外 (IR) 光谱学与部分最小平方 (PLS) 回归相结合,准确地预测了素的玻璃过渡温度 (Tg). 这种方法为材料科学中的素表征提供了更快,更强大的替代方案.
科学领域:
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
- 聚合物化学 聚合物化学
背景情况:
- 素的表征对于其在材料中的可持续使用至关重要.
- 目前用于预测素性质的方法可能很慢或不那么稳固.
- 红外 (IR) 光谱与部分最小平方 (PLS) 回归已经显示出预测素化学结构的前景.
研究的目的:
- 开发和验证一种用于预测素玻璃过渡温度 (Tg) 的快速分析方法.
- 证明基于IR的PLS模型的扩展用于预测Tg,这是一个关键的材料属性.
- 将新方法的稳定性与传统的经验关系进行比较.
主要方法:
- 使用基于红外 (IR) 光谱数据构建的部分最小平方 (PLS) 回归模型.
- 应用化学测量分析对一组多样化的植物和工艺不同的素样本.
- 开发了单独的模型来预测Tg和合酶的程度 (%allyl) 在合酶素分数中.
主要成果:
- 实现了Tg的低根平均平方预测错误 (RMSEP) (多种类型的素低至10.0°C, kraft素低至6.2°C).
- 成功地同时预测了Tg (RMSEP 6.1°C) 和%allyl (RMSEP 5.4%) 的合性素分数.
- 证明了精确的%allyl的确定,RMSEP为5.2%.
结论:
- 基于IR的PLS回归是一种强大而可靠的方法,用于预测素的玻璃过渡温度.
- 这种方法克服了传统方法的局限性,使得素的表征更快.
- 该方法促进了在先进材料应用中对红素的可持续利用.
相关概念视频
Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview
372
Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...
The ATR process begins by directing a beam...
372
Infrared (IR) Spectroscopy: Overview
1.8K
When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
Different compounds display unique properties due to their...
1.8K
Applications of IR Spectroscopy: Overview
734
The non-destructive nature and ability to provide valuable chemical information make IR spectroscopy a versatile technique with broad applications in various scientific and industrial fields. IR spectroscopy is commonly used to identify and characterize organic and inorganic compounds. It provides information about the functional groups present in a molecule and the bonding between atoms. This helps in the structural elucidation of compounds during organic synthesis, pharmaceutical research,...
734


