Surface functionalization of honeycomb-patterned porous poly(ε-caprolactone) films by interfacial polymerization of aniline

•Fabrication of conducting honeycomb-patterned films through interfacial polymerization.•Poly(ε-carprolactone) containing benzoyl peroxide was fabricated to obtain PCL-BPO honeycomb-patterned films.•PCL-BPO films are serving dual role of template as well as an oxidant.•The films were treated with aqueous aniline solution to polymerize at the interface.

We present a new and facile strategy for the fabrication of conducting honeycomb-patterned porous films through interfacial polymerization. Polymer solutions containing poly(ε-carprolactone) (PCL) and benzoyl peroxide (BPO) in chloroform was fabricated under high humid conditions to obtain PCL-BPO honeycomb patterned films. The films were treated with aqueous aniline hydrochloride solution to polymerize aniline at the interface of the PCL film and aniline hydrochloride solution. PCL-BPO films served dual role of a template as well as an oxidant. The proposed strategy retains the electrical conductivity of polyaniline as well as the mechanical strength and biodegradable properties of PCL. In contrast with in-situ templated bulk polymerization methods, the proposed method exhibits the advantage of retaining porosity without causing any wreckage.

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