Study On The Click Reaction Of Thiol-ENE/YNE On The Surface Of Polymer Substrate

Thiol-ene/yne photopolymerization has a long-standing application in modification of the substrates. The main purpose of this paper is to introduce thiol-ene/yne click reaction.on the on the surface of polymer films.The photosensitive monomers can be synthesized by 4-Hydroxyben-zophenone with Propargyl bromide.At the same time, the poly(BPMA-YNE) can be synthesized by BPMA and Propargyl methacrylate.Both of them can be used as the anchor structure of polymer films, but also the important monomers of the click reaction. In addition, through the photopolymerization of DVB, a large number of alkenyl groups can be introduced to the surfaceof polymer film.Then the click reaction of thiol-ene and thiol-yne take place on the surface of modified films with BPYNE and 1,6-Hexanedithiol or BPYNE and allylpentaerythritol.By changing the reaction monomers,we can change the hydrophobicity of the surface.With the help of photopolymerization of DVB, he polymer film has been grafted with the uniform cross-linking network prepared of APE and TH.The thickness of network can be changed with different monomer addition.The CA of PET is 60° when APE:TH=1.5,then the combination with AgNPs can be achieved by the reduction of silver nitrate solution. When the AgF6Sb is uniformly mixed in the APE:TH=1.5 system, we can get the uniform network of thiol ene with a high degree of density,which contain a a large amount of silver nanoparticles on the film and inside the crossing network. The modified film has good optical,electrical and antibacterial ability. At the same,the film has the excellent mechanical properties due to the thiol-ene crossing network. These modification greatly expand the application prospect of the polymer films.