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利用新型激光辅助装置制备乳液的光谱特性研究。

Spectroscopic Characterization of Emulsions Generated with a New Laser-Assisted Device.

机构信息

National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania.

Extreme Light Infrastructure-Nuclear Physics ELI-NP, "Horia Hulubei" National Institute for Physics and Nuclear Engineering IFIN-HH, 077125 Bucharest-Magurele, Romania.

出版信息

Molecules. 2020 Apr 9;25(7):1729. doi: 10.3390/molecules25071729.

DOI:10.3390/molecules25071729
PMID:32283754
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7180494/
Abstract

This paper presents a spectroscopic study of emulsions generated with a laser-assisted device. Fourier transform infrared (FTIR), Raman and UV-Vis-NIR reflectance spectra of emulsions, recorded before and after exposure to laser radiation were used to characterize the effect of laser irradiation. The paper also presents a comparison between the calculated IR spectra and the experimental FTIR spectra of an emulsion's components. FTIR measurements allowed the identification of absorption bands specific to each of the emulsions' components. Moreover, it enabled the observation of destabilization of the emulsion in real-time. Raman spectroscopy allowed the observation of the modifications at a molecular level, by identifying the vibrations of the representative functional groups and the polymerization of sodium tetradecyl sulfate (STS) molecules by analyzing the evolution of the carbonyl band. UV-Vis-NIR reflectance spectra of emulsions before and after exposure to laser radiation showed that the physical characteristics of the emulsions changed during irradiation-the dimensions of the droplets decreased, leading to an emulsion with a better time stability. These results proved that the employed spectroscopy techniques were powerful tools in emulsion analysis.

摘要

本文对激光辅助装置产生的乳液进行了光谱研究。记录了乳液在激光辐射前后的傅里叶变换红外（FTIR）、拉曼和紫外可见近红外反射光谱，用于表征激光照射的效果。本文还比较了计算的红外光谱和乳液成分的实验 FTIR 光谱。FTIR 测量允许识别每个乳液成分的特定吸收带。此外，它还能够实时观察乳液的失稳。拉曼光谱通过识别代表性官能团的振动和通过分析羰基带的演变来鉴定十四烷基硫酸钠（STS）分子的聚合，从而在分子水平上观察到了变化。乳液在激光辐射前后的紫外可见近红外反射光谱表明，乳液的物理性质在辐射过程中发生了变化——液滴的尺寸减小，导致乳液具有更好的时间稳定性。这些结果证明，所采用的光谱技术是乳液分析的有力工具。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/c97b846e8618/molecules-25-01729-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/1ff51797340a/molecules-25-01729-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/5a4a54b2c75a/molecules-25-01729-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/17b642d4214f/molecules-25-01729-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/fb17a35f5181/molecules-25-01729-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/85fe01179414/molecules-25-01729-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/745d21096291/molecules-25-01729-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/e3684bef04a4/molecules-25-01729-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/7e09db554d03/molecules-25-01729-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/55b2f44c0a74/molecules-25-01729-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/c97b846e8618/molecules-25-01729-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/1ff51797340a/molecules-25-01729-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/5a4a54b2c75a/molecules-25-01729-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/17b642d4214f/molecules-25-01729-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/fb17a35f5181/molecules-25-01729-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/85fe01179414/molecules-25-01729-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/745d21096291/molecules-25-01729-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/e3684bef04a4/molecules-25-01729-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/7e09db554d03/molecules-25-01729-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/55b2f44c0a74/molecules-25-01729-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f9/7180494/c97b846e8618/molecules-25-01729-g010.jpg

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