Determination of Phase Transition Temperatures by the Analysis of Baseline Variations in Transmittance Infrared Spectroscopy

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Determination of Phase Transition Temperatures by the Analysis of Baseline Variations in Transmittance Infrared Spectroscopy

机译：通过透射红外光谱中基线变化的分析确定相变温度

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A simple method for obtaining phase transition temperatures is proposed. It is based on absolute variations of a baseline in a temperature-dependent mid-infrared transmittance spectral data set recorded for a sample KBr pellet. The method is rapid, inexpensive, and completely free of any personal bias. The method efficiency was corroborated by measuring the phase transitions of mesomorphic (trans-4-heptyl cyclohexanecarboxylic acid) and polymorphic compounds (polycyclic aromatic hydrocarbons and phenylacetylenes). In addition, the exothermic decomposition of phenylacetylenes was also monitored, thereby opening the possibility for simple and rapid monitoring of chemical reactions in solid and liquid phase. A great prospect of the method as an economical way of establishing critical temperature regions for analytical and quality control purposes is foreseen.

机译：提出了一种获得相变温度的简单方法。它基于为样品KBr颗粒记录的温度相关的中红外透射光谱数据集中基线的绝对变化。该方法快速，廉价且完全没有任何个人偏见。通过测量介晶型（反式-4-庚基环己烷羧酸）和多晶型化合物（多环芳烃和苯乙炔）的相变，证实了方法的效率。另外，还监测了苯乙炔的放热分解，从而为简单，快速地监测固相和液相中的化学反应提供了可能性。可以预见该方法作为建立用于分析和质量控制目的的临界温度区域的经济方法的巨大前景。

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《Applied Spectroscopy》 |2009年第10期|1152-1161|共10页
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1. Determination of Phase Transition Temperatures by the Analysis of Baseline Variations in Transmittance Infrared Spectroscopy [J] . BORIS ZIMMERMANN, GORAN BARANOVIC Applied Spectroscopy: Society for Applied Spectroscopy . 2009,第10期

机译：通过透射红外光谱中基线变化的分析确定相变温度
2. Mechanism of Thermal Phase Transition of a Ferroelectric Liquid Crystal with Monotropic Transition Temperature Studied by Infrared Spectroscopy Combined with Principal Component Analysis and Sample-Sample Two-Dimensional Correlation Spectroscopy [J] . JINGGANG ZHAO, KENJI TATANI, YUKIHIRO OZAKI Applied Spectroscopy: Society for Applied Spectroscopy . 2005,第5期

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3. Solid dosage form analysis by near infrared spectroscopy: comparison of reflectance and transmittance measurements including the determination of effective sample mass [J] . Meenakshy Iyer, Hannah R. Morris, James K. Drennen III Journal of near infrared spectroscopy . 2002,第4期

机译：通过近红外光谱对固体剂型进行分析：比较反射率和透射率，包括确定有效样品质量
4. Phase-Transition Temperature Determination Using Optical Spectroscopy In a Rotating Flow Inside a Scrape Surface Crystallizer [C] . Carlos A. Acosta, Amar Bhalla, Ruyan Guo Conference on Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications . 2020

机译：在刮刮表面结晶器内使用光学光谱法测定光谱的相变温度测定
5. Off-axis cavity ring down spectroscopy with exponential and phase shift detection: Absorption spectra of weak transitions at low temperatures. [D] . Perez-Delgado, Yasnahir Z. 2009

机译：具有指数和相移检测功能的离轴腔衰荡光谱：低温下弱跃迁的吸收光谱。
6. Nondestructive monitoring storage quality of apples at different temperatures by near‐infrared transmittance spectroscopy [O] . Zhiming Guo, Mingming Wang, Ali Shujat, 2020

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7. Determination of Phase Transition by Principal Component Analysis Applied to Raman Spectra of Polycristalline BATIO3 at Low and High Temperature [O] . E.V. Mejía-Uriarte, R.Y. Sato-Berrú, M. Navarrete, 2012

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Determination of Phase Transition Temperatures by the Analysis of Baseline Variations in Transmittance Infrared Spectroscopy

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