Statistical copolymers of methacrylic acid (MAA) and methyl methacrylate (MMA), butyl (BMA), or lauryl (LMA) were synthesized via cobalt(II)-mediated catalytic chain transfer polymerization (CCTP) used as macromonomeric stabilizers in the emulsion MMA. By varying composition, length, concentration macromonomers, we able to tune particle size, molar mass, rheological behavior latexes. Most latex...

Water-soluble monodisperse superparamagnetic Fe3O4 nanocrystals decorated with two distinct functional groups are prepared in a single-step procedure by injecting iron precursors into a refluxing aqueous solution of a polymer ligand, trithiol-terminated poly(methacrylic acid) (PMAA-PTTM), bearing both carboxylate and thiol functionalities. The ratio of carboxylic acid groups in the polymer-prot...

Molecularly imprinted polymers were prepared and tested in different ways. 1-Methyl-2-piperidinoethylester of 4-decyloxyphenylcarbamic acid was used as the template for imprints formation. Acrylamide, 4-vinylpyridine, and methacrylic acid as monomers and methanol and acetonitrile as a porogene were used. Non-imprinted polymers were prepared for each imprinted polymer by the same procedure. Poly...

OBJECTIVES The purpose of this study was to analyze the behavior in water, related to mechanical properties, of experimental composites for dental restoration. METHODS The studied materials were composed of a visible-light-curing monomer mixture (Bis-GMA and TEGDMA or HEMA) and micrometric, nanometric or a mixture of both sizes hydroxyapatite particles as a reinforcing filler. Filler particle...

The combined chemical technologies of microbial fermentation and thermal catalysis provide a hybrid process for sustainable manufacturing biorenewable sugar-derived monomers plastics. In this work, methacrylic acid (MAA), target molecule the polymer industry, was produced from biomass-derived glucose through intermediate molecule, citramalic acid. biosynthetic pathway engineered in E. coli with...