Polymer adhesion vs substrate receptor group density

Ilsoon Lee, Richard P. Wool

Research output: Research - peer-reviewArticle

  • 37 Citations

Abstract

The effect of substrate receptor group density on polymer adhesion was investigated. Model substrates with varying -NH2 density on Al2O3 were prepared by a self-assembly of mixed amine-terminated silanes and methyl-terminated silanes. The model polymer was synthesized through a high-pressure carboxylation of polybutadiene. The polymer adhesion was determined by the fracture energy of the polymer-solid interfaces, GIC, from a T-peel test. The strong acid-base interactions between the polymer sticker groups (-COOH) and the substrate receptor groups (-NH2) at the interface caused an interesting fracture energy variation in the range of annealing times examined. At short time, GIC increased as the density of substrate receptor groups increased. However, at long time, GIC increased up to 30% receptor group coverage and then decreased with increasing coverage. A maximum in GIC occurred because the adhesive interface strength increased between the solid surface and the adsorbed chains, and simultaneously the cohesive interface strength decreased between the adsorbed chains and the neighboring free chains with increasing density. Failure occurred at the weaker of the two interface strengths. In this paper, it was shown that the polymer adhesion was not a monotonic function of the surface energetics.

LanguageEnglish (US)
Pages2680-2687
Number of pages8
JournalMacromolecules
Volume33
Issue number7
DOIs
StatePublished - Apr 4 2000
Externally publishedYes

Profile

Polymers
Adhesion
Substrates
Silanes
Fracture energy
Carboxylation
Self assembly
Amines
Adhesives
Annealing
Acids
polybutadiene
Polybutadienes

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Polymer adhesion vs substrate receptor group density. / Lee, Ilsoon; Wool, Richard P.

In: Macromolecules, Vol. 33, No. 7, 04.04.2000, p. 2680-2687.

Research output: Research - peer-reviewArticle

Lee I, Wool RP. Polymer adhesion vs substrate receptor group density. Macromolecules. 2000 Apr 4;33(7):2680-2687. Available from, DOI: 10.1021/ma991037a
Lee, Ilsoon ; Wool, Richard P./ Polymer adhesion vs substrate receptor group density. In: Macromolecules. 2000 ; Vol. 33, No. 7. pp. 2680-2687
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