Hostname: page-component-7479d7b7d-68ccn Total loading time: 0 Render date: 2024-07-08T11:38:19.501Z Has data issue: false hasContentIssue false
  • English
  • Français

A method of monitoring water absorption in polymers using a depth sensing indentation system

Published online by Cambridge University Press:  31 January 2011

I. A. Ashcroft  and
G. M. Spinks
I. A. Ashcroft
Affiliation:
Department of Materials Engineering, University of Wollongong, New South Wales, 2522, Australia
G. M. Spinks*
Affiliation:
Department of Materials Engineering, University of Wollongong, New South Wales, 2522, Australia
*
a) Address all correspondence to this author.
Get access

Abstract

The mechanical properties of many polymers are known to change as they absorb water. This fact has been used to monitor the absorption of water into the surface layers of an epoxy adhesive with a depth sensing indentation system. Two methods have been demonstrated. The sample can be immersed in water for a period of time and then removed and tested in air. Alternatively, the sample can be tested in in situ. In the second method the transport of water through the adhesive can clearly be seen in hardness/depth profiles. Hardness, elastic modulus, and creep strain of the adhesive change with time until a stable value is reached, which corresponds to full plasticization of the adhesive to the influence depth of the indenter. The initial mechanical properties of the epoxy are mostly recovered on drying.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 2 , February 1996 , pp. 529 - 536
Copyright
Copyright © Materials Research Society 1996

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.Brewis, D. M., Comyn, J., Raval, A. K., and Kinloch, A.J., Int. J. Adhesion and Adhesives 10, 247–253 (1990).CrossRefGoogle Scholar
2.Venables, J. D., J. Mater. Sci. 19, 2431–2453 (1984).CrossRefGoogle Scholar
3.Bianchi, N., Garbassi, F., Pucciariello, R., and Romano, G., Int. J. Adhesion and Adhesives 10, 19–23 (1990).CrossRefGoogle Scholar
4.Nakamura, K., Maruna, T., and Sasaki, S., Int. J. Adhesion and Adhesives 7, 97–102 (1987).CrossRefGoogle Scholar
5.Gledhill, R. A., Kinloch, A. J., and Shaw, S. J., J. Adhesion 11, 3–15 (1980).CrossRefGoogle Scholar
6.Foister, R. T., Niks, S. L. F., and Barker, M. J., J. Adhesion 30, 105–118 (1989).CrossRefGoogle Scholar
7.Barrer, R. M., Diffusion In and Through Solids (Cambridge University Press, London, 1941), p. 12.Google Scholar
8.Comyn, J., in Developments in Adhesives 2; edited by Kinlock, A. J. (Applied Science Publishers, Essex, U.K., 1981), pp. 279–313.Google Scholar
9.Tai, R. C. L. and Szklasrska-Smialowska, Z., J. Mater. Sci. 28, 6199–6204 (1993).CrossRefGoogle Scholar
10.Dewimille, B. and Bunsell, A.R., Composites, January 35–40 (1983).CrossRefGoogle Scholar
11.Althof, W. and Brockman, W., SAMPE Symp. Proc. 21, 581–591 (1976).Google Scholar
12.Tai, R. C. L. and Szklasrska-Smialowska, Z., J. Mater. Sci. 28, 6205–6210 (1993).CrossRefGoogle Scholar
13.Bell, T. J., Bendeli, A., Field, J. S., Swain, M. V., and Thwaite, E. G., Metrologia 28, 463–469 (1991).CrossRefGoogle Scholar
14.Crawford, R. J., Polymer Testing 3, 37–54 (1982).CrossRefGoogle Scholar
15.Ion, R. H., Pollock, H. M., and Roques-Carmes, C., J. Mater. Sci. 25, 1444–1454 (1990).CrossRefGoogle Scholar
16.Oliver, W. C. and Pharr, G.M., J. Mater. Res. 7, 1564–1583 (1992).CrossRefGoogle Scholar
17.Althof, W., Aluminum 55, 600 (1979).Google Scholar
18.Lawn, B. R., Evans, A.G., and Marshall, D.B., J. Am. Ceram. Soc. 63, 574 (1980).CrossRefGoogle Scholar
19.Watts, J. F., Castle, J. E., and Hall, T. J., J. Mater. Sci. Lett. 7, 176–178 (1988).CrossRefGoogle Scholar
20.Shaw, G. S., Rogers, C.E., and Payer, J.H., J. Adhesion 38, 255–268 (1992).CrossRefGoogle Scholar