Aromatic Structure Influence on the Selectivity of Substituted Methacryloylaminophenylmethacrylates Free-Radical Polymerization

A new dimethacrylic monomer with biphenylbenzoate-type aromatic core was tested to the possibility to carry out its selective homopolymerization under conditions of thermoinitiated radical polymerization in DMF solution. The kinetics of thermo-induced radical homopolymerization of this monomer as well as some model compounds were studied by dilatometry. The preferring polymerization of O-methacryloyl double bond was proved by 1H NMR spectroscopy

Synthesis and Adsorption Properties of 4-Vinylpyridine and Styrene Copolymer In Situ Immobilized on Silica Surface

Copolymer of 4-vinylpyridine with styrene was in situ immobilized on silica gel surface via the heterogeneous radical polymerization. Anchorage of the copolymer on the surface layer was confirmed by IR spectroscopy. The quantity of copolymer on the silica gel surface was evaluated as 25.73 wt.% by TG and DSC-MS analysis. “Islet” location of polymer layer on the silica surface was confirmed by the scanning electron microscopy. A high adsorption activity of silica gel with immobilized copolymer towards microquantitatives of Cu(II), Cd(II), Pb(II), Fe(III), and Ni(II) ions in steady state conditions as well as of Ni(II) ions in dynamic regime was found

In situ polymerization of 4-(methacryloylamino) phenyl-2-methylacrylate on the surface of silicagel

Immobilization of 4-(methacryloylamino)phenyl-2-methylacrylate homopolymer on the silica gel surface has been carried out in situ. The structure and quantitative characteristics of immobilized polymer have been examined by IR spectroscopy, thermogravimetric analysis and mass spectrometry. Adsorption activity towards microquantitatives of Pb(II), Cu (II), Mn(II), Co(II), Ni(II) and Fe(III) ions in the range of pH 6-8,5 has been observed. Quantitative adsorption of trace Pb(II) in neutral and slightly alkaline media has been reported

Problem of photoalignment in the lcd’s development: Synthetic routes in its solving. Molecular Crystals and Liquid Crystals 486

Hereinafter we discuss our last five years investigations in the field of new highly efficient polymers for liquid crystal (LC) photoalignment. New polymers finally 10 proposed are based on methacryloylaminoarylmethacrylates with two methacryloyl groups of different reactivity. Fries rearrangement and photocrosslinking= photopolymeryzation are such photochemical reactions which take place in their films under the action of UV light. In a case of polarized light irradiation rearrangement results in LC photoalignment. The problem of pretilt angle and 15 anchoring energy control as well as thermal stability of the induced alignment are discussed