Manufacturing programmable materials, whose mechanical properties can be adapted on demand, is highly desired for their application in areas ranging from robotics, to biomedicine, or microfluidics. Herein, the inclusion of dynamic and living bonds, such as alkoxyamines, a printable formulation suitable two-photon 3D laser printing exploited. On one hand, taking advantage covalent character nitr...

Styrene is used in a variety of chemical industries. Environmental and occupational exposures to styrene occur predominantly through inhalation. The major metabolite of styrene is present in two enantiomeric forms, chiral Rand Shydroxy-1-phenyl-acetic acid (R-and S-mandelic acid, MA). Thus, the concentration of MA, particularly of its enantiomers, has been used in urine tests to determine wheth...

Eight different functional monomers were used with ethylene glycol dimethacrylate as a cross-linker and molsidomine as a template to obtain molecularly imprinted polymers (MIPs). Non-covalent interactions between molsidomine and each functional monomer in DMSO prior to thermal bulk polymerization were utilized. On the basis of calculated imprinting factors, MIP prepared with N,N'-diallyltartara...

INTRODUCTION Emulsion polymerization yielding polymer latexes, is carried out on a vast scale. The use of water as a dispersion medium offers a unique combination of features, such as effective heat transfer, effective stabilization of polymer particles by surfactants, and environmental friendliness. By contrast to polymerization in solution or in the bulk, in emulsion polymerization a large po...

Sonogashira coupling of dibromo- and diethynyl-substituted benzenes and fluorenes in aqueous mini-emulsion afforded colloidally stable dispersions of highly fluorescent 60-120 nm particles of poly(arylene ethynylene)s of molecular weights M(n) 4 × 10(4)-2 × 10(5) g mol(-1) with solids contents up to 15 wt %. By covalent incorporation of diethynyl pyrrolo-pyrrole or diethynyl fluorenone in the m...

In this study molecular imprinting technology was employed to prepare a specific affinity sorbent for the resolution of Methylephedrine, a chiral drug. The molecularly imprinted polymer (MIP) was prepared by non-covalent molecular imprinting with either (+) or (-)-Methylephedrine ((R*,S*)-2-(methylamino)-1phenylpropan-1-ol) as the template. Methacrylic acid and ethylene glycol di-methacrylate w...

This work explores the potential of high-intensity ultrasound to produce fine-dispersion, long-time-stable, oil-in-water emulsions prepared with native and glycated bovine sodium caseinate (SC). Regardless the ultrasound amplitude and time assayed, the sonicated emulsions of native SC at 0.5 mg/mL had much higher emulsifying activity indexes compared with those emulsions formed by Ultra-Turrax ...

Diarylbibenzofuranone (DABBF) is a dynamic covalent bonding unit, which is in equilibrium with the corresponding radicals at room temperature, and polymers with DABBF linkages show notable properties such as self-healing. The preparation routes have been strictly limited, however, and no polymer with the linkages has been synthesized via radical polymerization because of the strong antioxidant ...

The molecularly imprinted polymers for gallic acid were synthesized by precipitation polymerization. During the process of synthesis a non-covalent approach was used for the interaction of template and monomer. In the polymerization process, gallic acid was used as a template, acrylic acid as a functional monomer, ethylene glycol dimethacrylate as a cross-linker and 2,2'-azobisisobutyronitrile ...

An enzyme isolated from Escherichia coli catalyzes the synthesis of polyriboadenylate from ATP in the absence of a RNA primer. The reaction is dependent on the presence of either Mg 2+ or Mn*+, 0.8 or 0.2 mu being optimal, respectively. Addition of Mg2f to reaction mixtures containing optimal concentration of Mn2+ or vice versa results in marked inhibition of the polymerization reaction. Inclus...