Acoustical Analysis of Dextran+urea: Insights into Molecular Interactions

Subhraraj Panda
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Abstract

The aim of this study is to determine the acoustic parameters of polymer dextran with urea. Recent years have seen an increase in the use of ultrasonic research to describe the physiochemical and thermodynamic characteristics of liquid solutions at various temperatures and frequencies. The size of the pure component and the mixtures had an impact on various interactions, molecular mobility, and kinds of interaction. Which were studied using the acoustical and thermodynamic characteristics? To ascertain how the solvent urea interacts with the solute dextran at the molecular level. Dextran (molecular weight of 70000) with 6(M)urea was used. The solution's density using a pycnometer, viscosity using an Ostwald viscometer, and ultrasonic velocity using an ultrasonic interferometer were examined. The physical properties of the medium are affected by the transmission of ultrasonic waves, which also teaches us about the physics of liquids and solutions. Understanding the interactions between the solutes and the solvent in the solution of dextran and urea, both the evaluated parameters were used, such as free volume, internal pressure, absorption coefficient, Rao's constant, and Wada's constant, as well as the observed values, such as ultrasonic velocity, density, and viscosity. Based on the modification of these parameters with varied temperature and frequency, molecular mobility, different types of intermolecular interaction, and the strength of the bond between the solute (dextran 0.5%) and solvent (6(M) urea) are investigated. The findings have been explained in terms of a structural reorganisation in the aqueous dextran solution. At all the temperatures used for the investigation, the solute-solvent interactions are more significant. The change in the acoustic properties is small because the frequency variation causes the molecules to move swiftly and have little chance to interact. Investigating molecular interactions, including electrostriction, acceptor-donor association, dipole-dipole association, and hydrogen bonding, has used these properties. Understanding molecular interactions helps one to comprehend the core issues surrounding the mechanisms of chemical and biological catalysis and the routes of chemical reactions.
葡聚糖+尿素的声学分析:洞察分子相互作用
本研究的目的是确定含有尿素的聚合物葡聚糖的声学参数。近年来,人们越来越多地使用超声波研究来描述不同温度和频率下液体溶液的物理化学和热力学特性。纯成分和混合物的大小对各种相互作用、分子流动性和相互作用的种类都有影响。利用声学和热力学特性研究了哪些因素?确定溶剂尿素与溶质右旋糖酐在分子水平上的相互作用。 使用了分子量为 70000 的右旋糖酐和 6(M)脲。使用比重计检测溶液的密度,使用奥斯特瓦尔德粘度计检测溶液的粘度,使用超声波干涉仪检测溶液的超声波速度。 介质的物理特性受到超声波传输的影响,这也让我们了解到液体和溶液的物理特性。为了解右旋糖酐和尿素溶液中溶质和溶剂之间的相互作用,既使用了自由体积、内压、吸收系数、拉奥常数和和田常数等评估参数,也使用了超声波速度、密度和粘度等观测值。 在改变温度和频率对这些参数进行调节的基础上,研究了分子流动性、不同类型的分子间相互作用以及溶质(0.5% 右旋糖酐)和溶剂(6(M) 尿素)之间的结合强度。研究结果可以用葡聚糖水溶液中的结构重组来解释。在研究使用的所有温度下,溶质与溶剂之间的相互作用都更为显著。声学特性的变化很小,因为频率变化导致分子快速移动,几乎没有机会发生相互作用。对分子相互作用的研究,包括电致伸缩、受体-捐献者结合、偶极子-偶极子结合和氢键,都使用了这些特性。了解分子相互作用有助于理解围绕化学和生物催化机理以及化学反应途径的核心问题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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