In this study, nanocomposite hydrogels of poly(methacrylic acid-co-acrylamide) (Poly(MAA-co-AAm)) containing different weight percent bentonite clay nanoparticles (0, 5, 10, and 15 wt. %) were used to remove methyl violet (MV) dye. FTIR, SEM, TGA, XRD analyze the properties adsorbents. Results showed that successfully distributed in hydrogel system. Bentonite at 10 % gave maximum MV dye adsorpt...

Partially methylated polycytidylic acids were used as templates in an RNA-dependent RNA polymerase reaction with enzyme isolated from Micrococcus lysodeikticus. The presence of methylated cytidylic acid residues in the template led to the formation of a copolymer of uridylic and guanylic acids. The composition of this product copolymer was dependent on the extent of methylation of the polycytid...

A one-pot ultrasonic procedure has been developed as a versatile route for synthesizing polymer-coated microspheres that have potential application as drug delivery vehicles. The use of synthetic thiolated poly(methacrylic acid) macromolecules as the shell material offers control over size, morphology and functionality of the microspheres.

The annealed copolymer polyriboinosinic acid x polyriboinosinic acid reacted with Limulus amoebocyte lysate to cause gelation at a concentration approximately 2,000-fold or greater than bacterial endotoxins. This copolymer was pyrogenic in rabbits and demonstrated hypochromicity, but no significant correlation was noted among Limulus amoebocyte lysate reactivity, progenicity, and hypochromicity...

We report here a nanospherical polymer consisting of methacrylic acid and N,N'-methylenebisacrylamide, which works as a metal-free magnetic resonance imaging (MRI) sensor for pH. The nanospherical polymer gave a lower signal T2-weighted MRI image with decreasing pH. In contrast, it had little effect on the T1-weighted MRI image.

copolymerization of aniline and 2-anilinoethanol was carried out by electrochemical and chemical polymerization. homo and copolymer thin films were synthesized electrochemically, under cyclic voltammetric conditions in aqueous solutions of sulfuric acid as electrolyte at room temperature. the films were deposited on the surface of working electrode [glassy carbon ()gc)(] versus ag/agcl electrod...

New biodegradable network polymers containing siloxane-linked polymeric prodrugs of 5-ammino-2-hydroxybenzoic acid (5-ASA) in the main chain were prepared by ter polymerization of methacrylic acid (MA), 2-hydroxyethylmethacrylate (HEMA), and bis (trimethylsilyloxy) methylsilane (VBM) in the presence of some new cross-linking agents.The monomers and polymers were characterized by FT-IR and 1H-NM...

The feasibility of extractive reaction of methacrylic acid from aqueous solution using a quaternary amine, tri–octyl methyl ammonium chloride (TOMAC) as an extractant, was studied. The diluents chosen in the present work belong to different chemical classes, n–butyl acetate, carbon tetrachloride, isoamyl alcohol, methyl isobutyl ketone, and toluene. The effect of initial acid concentration in t...

Front Cover: In article number 2300006, Nermin Orakdogen and co-workers deal with temperature-optimized synthesis of N-(alkyl)acrylamide-based semi-interpenetrating polymer network reinforced silica nanoparticles functionalized methacrylic acid units by varying the polymerization temperature. The gelation is performed at different temperatures to evaluate formation mechanism. mechanical propert...