Polymerization post-film synthesis

Additionally, the polymer composition can be modified to enable the material to function under varied environmental conditions. Poly(ethylene glycol) (PEG) is a copolymer that is often used for both in vivo and in situ medical devices. PEG reduces the ability of proteins to bind to the surface of materials and reduces their antigenicity while minimizing inflammatory response. PEG can be applied to polymers post-synthesis or can be used as a comonomer. Vinyl PEGs are frequently used as comonomers during UV polymerization of hydrogels and films. 

The electrochemical stability of PAn film at higher potentials is essential for its use as an electrochromic material and as a catalytic electrode. Similarly, soluble polyaniline is also required for many applications to facilitate post-synthesis processing. Electrochemical polymerization can be carried out by 0.1 M monomer in 1 M of aqueous solution of aromatic sulphonic acid. Prior to polymerization, the solution should be deoxygenated by passing argon gas for 30 minutes. 

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