Determining the elastic properties of modified polystyrenes by sound velocity measurements

The effect of the binding of various polyfunctional groups to polystyrene's (PS's) aromatic ring on the elastic properties of the PS were investigated by an ultrasonic method. Various sets of samples were prepared by chemical modification of pure PSs having different molecular weights with...

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Bibliographic Details
Published inJournal of applied polymer science Vol. 121; no. 6; pp. 3425 - 3432
Main Authors Oral, Imran, Guzel, Hatice, Ahmetli, Gulnare, Gur, C. Hakan
Format Journal Article
LanguageEnglish
Published Hoboken Wiley Subscription Services, Inc., A Wiley Company 15.09.2011
Wiley
Wiley Subscription Services, Inc
Subjects
Acoustic impedance
Applied sciences
Chemical modifications
Chemical reactions and properties
Constants
Density
Elastic constants
Exact sciences and technology
Materials science
Mathematical analysis
mechanical properties
modification
Organic polymers
Physicochemistry of polymers
Polymers
polystyrene
Polystyrene resins
Sound velocity
Ultrasonic testing
Elastic constant
polystyrene
Mechanical properties
Benzo[c]furan-1,3dione(1,3-dihydro)
Styrene derivative copolymer
modification
Maleic anhydride
Chemical modification
Functionalization
Poisson ratio
Styrene polymer
Property structure relationship
Acid copolymer
Measurement method
Ultrasonic method
Styrene copolymer
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Summary:The effect of the binding of various polyfunctional groups to polystyrene's (PS's) aromatic ring on the elastic properties of the PS were investigated by an ultrasonic method. Various sets of samples were prepared by chemical modification of pure PSs having different molecular weights with SA, maleic anhydride, and phthalic anhydride. The ultrasonic wave velocities of modified PSs were measured with the pulse‐echo method at room temperature by a computer‐controlled analyzer and a digital oscilloscope. The values of the acoustic impedance, Poisson's ratio, and elasticity constants of the samples were calculated by the measured values of the densities and sound velocities. The longitudinal and shear wave velocities and the values of all elastic constants increased with chemical modification of the pure PS. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0021-8995
1097-4628
1097-4628
DOI:10.1002/app.33860