The temperature and frequency dependence of the bulk compliance of poly(vinyl acetate). A re-examination

被引：38

作者：

Deng T.H. ^{[1
]}

Knauss W.G. ^{[1
]}

机构：

[1] Graduate Aeronautical Laboratories, California Institute of Technology, Pasadena

来源：

Mechanics of Time-Dependent Materials | 1997年 / 1卷 / 1期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

Dynamic bulk compliance; Dynamic bulk modulus; Linearly viscoelastic properties; Poly(vinyl acetate);

D O I：

10.1023/A:1009734225304

中图分类号：

学科分类号：

摘要：

Measurements are described and analyzed for the determination of the dynamic bulk compliance for Poly(vinyl acetate) [PVAc] as a function of frequency and temperature at atmospheric pressure to generate a master compliance curve over a total frequency range of about 12 decades. Measurements are based on the compressibility of a specimen confined to an oil-filled cavity resulting from pressurization by a piezoelectric driver and response of a like receiver. Experimental problems addressing limitations in resolution capability are discussed. The results are compared with the classical measurements obtained by McKinney and Belcher over thirty years ago. Further comparison of the bulk with shear compliance data shows that the extent of the transition ranges for the two material functions are comparable, but the two transitions belong to different time scales, that of the bulk response falling mostly into the glassy domain of the shear behavior. One concludes thus that for linearly viscoelastic response the molecular mechanisms contributing to shear and bulk deformations have different conformational sources. © 1997 Kluwer Academic Publishers.

引用

页码：33 / 49

页数：16

共 14 条

[1]

Duran R.S., McKenna G.B., A torsional dilatometer for volume change measurements on deformed glasses: Instrument description and measurements on equilibrated glasses, J. Rheology, 34, (1990)

[2]

Ferry J.D., Viscoelastic Properties of Polymers, 3rd Edition, (1980)

[3]

Heydemann P., The dynamic compressibility of high polymers in the frequency range from 0.1 c/s to 60 kc/s, Acustica, 9, (1959)

[4]

Heymans L.J., An Engineering Analysis of Polymer Film Adhesion to Rigid Substrates, (1983)

[5]

Knauss W.G., Emri I.J., Non-linear viscoelasticity based on free volume consideration, Computers and Structures, 13, (1981)

[6]

Knauss W.G., Emri I.J., Volume change and the non-linearly thermo-viscoelastic constitution of polymers, Polymer Engineering and Science, 27, (1987)

[7]

Knauss W.G., Kenner V.H., On the hygrothermomechanical characterization of polyvinyl acetate, J. Appl. Phys., 51, (1980)

[8]

Lin T.S., Nolle A.W., Dynamic compressibility of poly(vinyl acetate) and poly(methylmethacrylate): Effects of molecular weight, Polymer, 30, (1989)

[9]

Losi G.U., Knauss W.G., Free volume theory and nonlinear thermoviscoelasticity, Polymer Science and Engineering, 32, (1992)

[10]

Lu H., Knauss W.G., Non-linear viscoelastic behavior of PMMA under multiaxial stress states, Mech. Time-Dep. Mat., 1, (1997)

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