A Biomimetic Approach to Enhancing Interfacial Interactions: Polydopamine-Coated Silica as Reinforcement for Epoxy Resin
A facile biomimetic method was developed to enhance the interfacial interaction in polymer-inorganic composites. By mimicking mussel adhesive proteins, a monolayer of polydopamine (PD) was constructed on surface of silica particles through a controllable coating pathway. The modified silica (PD-silica) was incorporated into an epoxy resin. It is found that the strong interfacial interactions brought by the polydopamine benefits the effective interfacial stress transfer, leading to greatly improved flexural properties of epoxy based composites.
Z.S. Liu, L.P. Xu, X.D. Liang, Z.H. Wang and H.M. Zhang
J. Li et al., "A Biomimetic Approach to Enhancing Interfacial Interactions: Polydopamine-Coated Silica as Reinforcement for Epoxy Resin", Advanced Materials Research, Vol. 1015, pp. 721-724, 2014