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Ultrasonic Studies of Molecular Interactions in Polymer Solution of the Polyisobutylene (PIB) and Benzene

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Ultrasonic studies of intermolecular interactions in the polymer solution of poly isobutylene (PIB) and Benzene have been done at 40 °C using ultrasonic velocity, density and refractive index data taken from literature. Several acoustic parameters such as acoustic impedance, isothermal compressibility, molar sound velocity, molar adiabatic compressibility, internal pressure, free volume, van der Waal constants, molar cohesive energy, molecular radius and relaxation time have been studied. A large number of thermo-dynamical parameters such as available volume, geometrical volume, intermolecular free length, relative association, surface tension, molar refraction, pseudo-Gruneisen parameter, Debye temperature, diff usion constant, coefficient of thermal conductivity, latent heat of melting and electronic polarisability have also been evaluated. Several thermo-elastic parameters such as Young modulus, shear modulus, bulk modulus and Poisson ratio are also determined. Schaaff 's collision factor theory, Nomoto's relation, Van Dael-Vangeel relation, impedance dependence relation and ideal mixing relation have been used to predict the values of ultrasonic velocities in the system under study. The obtained results have been compared with the experimental results as available in literature. Present investigation of the polymer solution provides a deep insight into the nature, type and strength of intermolecular interactions prevalent in it. The non-ideal behaviour of the solution has been explained in terms of its composition and variation of its acoustical and thermo-dynamical parameters.
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Document Type: Research Article

Publication date: May 1, 2014

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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