Moisture attack on adhesive joints: Roles of adhesive and interface properties

D. L. Hunston, K. T. Tan, Bryan Vogt, S. K. Satija, C. Clerici, C. C. White

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

It is well-known that moisture attacks the interfacial bonds within an adhesive joint. A particularly interesting observation is that when the moisture level in certain systems exceeds a critical concentration, the bonded joint shows a dramatic loss of strength. A number of authors have investigated this phenomenon and concluded that the interface plays a crucial role but have not been able to explain why there is a critical concentration of moisture or what role is played by the properties of the bulk adhesive. Other researchers have shown that the concentration of water near the interface can be quite different than that in the bulk adhesive. If the interface is crucial to the observed effect, the local water content should be very important. To gain a clearer picture of what controls this phenomenon, we have combined a fracture mechanics approach to determine joint strength with neutron reflectivity which provides a detailed characterization of the moisture distribution near the interface. The work uses silicon dioxide substrates bonded to a series of polymers based on poly(n-alkyl methyl methacrylate). By substituting different alkyl groups, the molecular structure of the polymer can be systematically changed to vary the chemical and physical properties over a wide range. The results in this study suggest that the loss of adhesion is dependent on a combination of local water concentration near the interface, swelling stresses resulting from the water absorption, and water induced weakening of the interface bonds.

Original languageEnglish (US)
Title of host publication24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites
Pages2772-2783
Number of pages12
StatePublished - Dec 1 2009
Event24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites - Newark, DE, United States
Duration: Sep 15 2009Sep 17 2009

Publication series

Name24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites
Volume4

Other

Other24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites
CountryUnited States
CityNewark, DE
Period9/15/099/17/09

Fingerprint

Adhesive joints
Adhesives
Moisture
Water
Polymers
Methacrylates
Water absorption
Fracture mechanics
Silicon Dioxide
Chemical properties
Water content
Molecular structure
Swelling
Neutrons
Adhesion
Physical properties
Silica
Substrates

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

Cite this

Hunston, D. L., Tan, K. T., Vogt, B., Satija, S. K., Clerici, C., & White, C. C. (2009). Moisture attack on adhesive joints: Roles of adhesive and interface properties. In 24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites (pp. 2772-2783). (24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites; Vol. 4).
Hunston, D. L. ; Tan, K. T. ; Vogt, Bryan ; Satija, S. K. ; Clerici, C. ; White, C. C. / Moisture attack on adhesive joints : Roles of adhesive and interface properties. 24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites. 2009. pp. 2772-2783 (24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites).
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title = "Moisture attack on adhesive joints: Roles of adhesive and interface properties",
abstract = "It is well-known that moisture attacks the interfacial bonds within an adhesive joint. A particularly interesting observation is that when the moisture level in certain systems exceeds a critical concentration, the bonded joint shows a dramatic loss of strength. A number of authors have investigated this phenomenon and concluded that the interface plays a crucial role but have not been able to explain why there is a critical concentration of moisture or what role is played by the properties of the bulk adhesive. Other researchers have shown that the concentration of water near the interface can be quite different than that in the bulk adhesive. If the interface is crucial to the observed effect, the local water content should be very important. To gain a clearer picture of what controls this phenomenon, we have combined a fracture mechanics approach to determine joint strength with neutron reflectivity which provides a detailed characterization of the moisture distribution near the interface. The work uses silicon dioxide substrates bonded to a series of polymers based on poly(n-alkyl methyl methacrylate). By substituting different alkyl groups, the molecular structure of the polymer can be systematically changed to vary the chemical and physical properties over a wide range. The results in this study suggest that the loss of adhesion is dependent on a combination of local water concentration near the interface, swelling stresses resulting from the water absorption, and water induced weakening of the interface bonds.",
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Hunston, DL, Tan, KT, Vogt, B, Satija, SK, Clerici, C & White, CC 2009, Moisture attack on adhesive joints: Roles of adhesive and interface properties. in 24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites. 24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites, vol. 4, pp. 2772-2783, 24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites, Newark, DE, United States, 9/15/09.

Moisture attack on adhesive joints : Roles of adhesive and interface properties. / Hunston, D. L.; Tan, K. T.; Vogt, Bryan; Satija, S. K.; Clerici, C.; White, C. C.

24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites. 2009. p. 2772-2783 (24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites; Vol. 4).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Hunston DL, Tan KT, Vogt B, Satija SK, Clerici C, White CC. Moisture attack on adhesive joints: Roles of adhesive and interface properties. In 24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites. 2009. p. 2772-2783. (24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites).