Structure of Conducting Polymer Films Prepared on the Surface and in the Pores of Poly(ethylene terephthalate) Track Membranes by Template Synthesis

Abstract

The results of a structural study of conducting polymer coatings deposited onto poly(ethylene terephthalate) (PET) track membranes by template synthesis are reported. The following aspects of the quality of polymer coatings were studied: the ratio between film and granular polymers, the polymer distribution over the surface of track membranes, and the thickness of polymer layers on the opposite sides of track membranes. The fraction of granular polypyrrole (PPy) on the surface and in the pores of a film increased with pore diameter. A decrease in the polymerization temperature decreased the amount of granular PPy on the surface of membranes, whereas the effect of granular PPy on the water permeability of track membranes remained unchanged. A more homogeneous distribution of PPy over the surface of track membranes can be obtained by density equalization of reacting solutions; however, the fraction of granular PPy on the membrane surface increased in this case. It was found that polymer coatings on the two sides of the surface of a membrane template had different thicknesses. Poly( N -methylpyrrole) completely covered only one side of a track membrane facing a monomer solution.

Electrochemically Patterned Transducer with Anisotropic PEDOT through Liquid Crystalline Template Polymerization

“…This can be carried out by the selective control of noncovalent interactions such as hydrogen bonding, van der Waals forces, π−π stacking, and so forth. 13,14 The different synthetic routes include synthesis in micellar media, 15,16 template-guided polymerization using porous surfaces 17,18 and liquid crystalline (LC) phases. 19−21 Aqueous solutions containing a variety of anionic, cationic, or nonionic surfactants can self-assemble to form concentration dependent LC phases of specific textures.…”

“…However, these strategies lack in the prediction of morphology and performance. , Other promising strategies reported for the enhancement in the ordering of CPs are to prepare them in the nanometer regime using self-assembly. This can be carried out by the selective control of noncovalent interactions such as hydrogen bonding, van der Waals forces, π–π stacking, and so forth. , The different synthetic routes include synthesis in micellar media, , template-guided polymerization using porous surfaces , and liquid crystalline (LC) phases. − Aqueous solutions containing a variety of anionic, cationic, or nonionic surfactants can self-assemble to form concentration dependent LC phases of specific textures. − These specific textures may contain well-organized channels which can be exploited to tune the size and shape of the functional nanomaterials. Stupp et al studied the electrochemical polymerization of EDOT in a hexagonal lyotropic LC template and observed that formed PEDOT retained the texture and optical anisotropy of the LC template .…”