MICROPHASE-SEPARATED STRUCTURES BASED ON N-SUBSTITUTED POLYDIALLYLAMINES

The ionogenic polymers namely poly(N,N-diallyl-N-cetylammonium hydroni trate) (PDACA.HNO3) and poly(N,N-diallyl-N,N-dimethylammonium chloride )-block-poly(cetyl acrylate) (PDADMACl-block-PA-16) were synthesized v ia activation of the terminal double bond of the PDADMACl precursor an d initiation of the polymerization of the acrylic monomer in alcohol s olution. The microphase separated structure of a blend of both homopol ymers and of the block copolymer was proved by differential scanning c alorimetry (DSC) and X-ray diffraction measurements. Side chain crysta llization in PDACA.HNO3 completely restricts the crystallization of th e ionogenic backbones which, however, control the layered structure an d the crystallization of the aliphatic chains. In PDADMACl-block-PA-16 crystalline polyacrylate blocks coexist with crystalline ionogenic bl ocks. The length of the polyacrylate block influences the ability of t he ionogenic block to form the crystalline structure.