Abstract
Measurements are described and analyzed for the determination of thedynamic bulk compliance for Poly(vinyl acetate) [PVAc] as a function offrequency and temperature at atmospheric pressure to generate a mastercompliance curve over a total frequency range of about 12 decades.Measurements are based on the compressibility of a specimen confined to anoil-filled cavity resulting from pressurization by a piezoelectricdriver and response of a like receiver. Experimental problems addressinglimitations in resolution capability are discussed. The results arecompared with the classical measurements obtained by McKinney andBelcher over thirty years ago. Further comparison of the bulk with shearcompliance data shows that the extent of the transition ranges for thetwo material functions are comparable, but the two transitions belong todifferent time scales, that of the bulk response falling mostly into theglassy domain of the shear behavior. One concludes thus that forlinearly viscoelastic response the molecular mechanisms contributing toshear and bulk deformations have different conformational sources.
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References
Duran, R.S. and McKenna, G.B., ‘A torsional dilatometer for volume change measurements on deformed glasses: Instrument description and measurements on equilibrated glasses’, J. Rheology 34, 1990, 813.
Ferry, J.D., Viscoelastic Properties of Polymers, 3rd Edition, Wiley, New York, 1980.
Heydemann, P., ‘The dynamic compressibility of high polymers in the frequency range from 0.1 c/s to 60 kc/s’, Acustica 9, 1959, 446.
Heymans, L.J., ‘An engineering analysis of polymer film adhesion to rigid substrates’, Ph.D. thesis, California Institute of Technology, 1983.
Knauss, W.G. and Emri, I.J., ‘Nonlinear viscoelasticity based on free volume consideration’, Computers and Structures 13, 1981, 123.
Knauss, W.G. and Emri, I.J., ‘Volume change and the nonlinearly thermoviscoelastic constitution of polymers’, Polymer Engineering and Science 27, 1987, 86.
Knauss W.G. and Kenner, V.H., ‘On the hygrothermomechanical characterization of polyvinyl acetate’, J. Appl. Phys. 51, 1980, 5131.
Lin, T.S. and Nolle, A.W., ‘Dynamic compressibility of poly(vinyl acetate) and poly(methyl methacrylate): Effects of molecular weight’, Polymer 30, 1989, 648.
Losi, G.U. and Knauss, W.G., ‘Free volume theory and nonlinear thermoviscoelasticity’, Polymer Science and Engineering 32, 1992, 542.
Lu, H. and Knauss, W.G., ‘Nonlinear viscoelastic behavior of PMMA under multiaxial stress states’, GALCIT SM Report 966, Mech. TimeDep. Mat. 1, 1997 (to appear).
Marvin, R.S. and McKinney, J.E., ‘Volume relaxation in amorphous polymers, physical ccoustics’, Physical Acoustics Vol. IIB, W.P. Mason (ed.), Academic Press, New York, 1965, 165.
McKinney, J.E. and Belcher, H.V., ‘Dynamic compressibility of poly(vinyl acetate) and its relation to free volume’, J. Research of National Bureau of Standards, A. Physics and Chemistry 67A, 1963, 43.
McKinney, J.E., Edelman, S., and Marvin, R.S., ‘Apparatus for the direct determination of the dynamic bulk modulus’, J. Appl. Phys. 27, 1956, 425.
Plazek, D.J., ‘The temperature dependence of the viscoelastic behavior of poly(vinyl acetate)’, Polymer Journal 12, 1980, 43.
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Deng, T., Knauss, W. The Temperature and Frequency Dependence of the Bulk Compliance of Poly(Vinyl Acetate). A Re-Examination . Mechanics of Time-Dependent Materials 1, 33–49 (1997). https://doi.org/10.1023/A:1009734225304
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DOI: https://doi.org/10.1023/A:1009734225304