Study of Phase Behavior of Aqueous Nano-Sized Dispersion of n-Eicosane (n-C20H42)

IF 0.8 4区 化学 Q4 CHEMISTRY, PHYSICAL Russian Journal of Physical Chemistry A Pub Date : 2025-02-11 DOI:10.1134/S0036024424702856
V. N. Kuryakov, D. A. Mrachkovskaya, E. G. Gudkova
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Abstract

Every year, the interest in obtaining new forms of phase change materials (PCM) and studying their physicochemical properties is growing. A topical task is to develop new experimental methods for studying the phase behavior of PCM. The paper presents the results of a study of the phase behavior of a nanosized aqueous dispersion of n-eicosane (C20H42) using an optical method. Samples of an aqueous dispersion of the studied paraffin were obtained using ultrasonic dispersion without adding surfactants. For the studied sample, the temperatures of phase transitions (melting, crystallization, rotator phases) were determined during heating and cooling. Phase transitions not observed in a bulk sample of the studied paraffin were discovered.

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正二十烷(n-C20H42)纳米级水分散体的相态研究
近年来,人们对新型相变材料(PCM)的研究及其物理化学性质的兴趣日益浓厚。当前的课题是开发新的实验方法来研究PCM的相行为。本文介绍了用光学方法研究纳米级正二十烷(C20H42)水溶液分散体的相行为的结果。在不添加表面活性剂的情况下,采用超声波分散获得了所研究石蜡的水分散样品。对于所研究的样品,在加热和冷却过程中测定了相变温度(熔化相、结晶相、旋转相)。发现了在所研究的石蜡的散装样品中未观察到的相变。
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来源期刊
CiteScore
1.20
自引率
14.30%
发文量
376
审稿时长
5.1 months
期刊介绍: Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world. Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.
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