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13 results on '"PIERONI O"'

1. Polymerization of aqueous liquid-crystalline allyldimethyldodecylammonium bromide.

Author

Rodríguez, J. L., Soltero, J. F. A., Puig, J. E., Schulz, P. C., Espinoza-Martínez, M. L., and Pieroni, O.

Abstract

Allyldimethyldodecylammonium bromide was polymerized by γ-ray irradiation in both hexagonal and cubic mesophases, and the conversion–time curves were obtained. The maximum conversion was about 35%, and the polymer remained in the liquid-crystalline structure formed by the nonpolymerized monomers. The influence of polymerization on the distribution of water in the different types related to the hydrophilic surfaces of microstructures was studied using Fourier transform infrared spectroscopy. The incomplete polymerization was explained by steric constraints in the liquid-crystalline structures. [ABSTRACT FROM AUTHOR]

Published
1999
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2. MODULATION OF THE RESPONSE OF POLYMER MATERIALS THROUGH MOLECULAR INTERACTIONS AND NANODISPERSION.

Author

Ciardelli, F., Pieroni, O., Bronco, S., Ruggeri, G., and Pucci, A.

Subjects
POLYMERS, MATERIALS, POLYPEPTIDES, ORGANIC dyes, MACROMOLECULES
Abstract

Relevant examples are described here, concerning the light response of polypeptides bearing covalently bound photochromic groups in the side chains and the optical properties changes of nanocomposites from organic dyes aggregates dispersed in a thermoplastic matrix. The former system shows how the light induced structural changes in side chain chromophores can be amplified by the attached macromolecular response. The latter system provides evidence of the optical smart response to polymer/organic chromophores nanocomposite [ABSTRACT FROM AUTHOR]

Published
2008
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