In this pre-print, we show that a self-assembled close-packed morphology can be achieved in bimodal polystyrene latex blends at an optimum blending ratio. We then compare the experimental results and the theoretical predictions when examining the competition between polymer interdiffusion and a crosslinking reaction in the film. The latex film was prepared from bimodal reactive polystyrene latex blends, in which the reactive groups (carboxylic acid and primary amine) are incorporated in separate latex particles. Our study validates de Gennes' Scaling Theory in the slow reaction regime. We have also proved that by controlling the molecular parameters, we are able to design a reaction-controlled latex blend system, so that the corresponding film mechanical performance will be enhanced.

Film formation from bimodal reactive latexes

242nd National Meeting (2011)

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