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793 results on '"Ciardelli, Francesco"'

219. An Integrated Approach to Design Fluoro Substituted 'Smart' Polymers for Protection of Monumental Buildings

Author

Mauro, Aglietto, Castelvetro, Valter, Ciardelli, Francesco, Ugo, Matteoli, Carlo, Botteghi, Oscar, Chiantore, Massimo, Lazzari, Giovanna, Alessandrini, Roberto, Peruzzi, Lucia, Toniolo, and Vasco, Fassina

Subjects
alternating copolymers, stone protection, fluorinated acrylic monomers and polymers, photostability, durability, water repellency, vapour permeability, ageing
Published
2000

235. Structure-activity relationship of new NLO organic materials based on push-pull azodyes. 1. Synthesis and molecular properties of the dyes

Author

Tirelli, N., Altomare, Angelina, Solaro, Roberto, Ciardelli, Francesco, Suter, U. W., Meier, U., Bosshard, C. H., and Günter, P.

Subjects
Steric effects, Dielectric, Ring (chemistry), chemistry.chemical_compound, Dipole, non linear optics, Azobenzene, chemistry, Computational chemistry, 2nd harmonic generation, push-pull azo dyes, Polar effect, Organic chemistry, Structure–activity relationship, Push pull
Abstract

Several new push-pull azobenzene dyes were synthesized by diazonium salt coupling of electron-poor anilines with N,N-dialkylanilines. Their dipole moments and first-order hyperpolarizabilities were evaluated respectively from the concentration dependence of the dielectric constant of solutions in apolar solvents and by the electric-field-induced-second-harmonic-generation (EFISH) technique. Investigation of the influence of both nature and steric hindrance of the electron-withdrawing group allowed to highlight a significant deviation from linearity in the relationship between dipole moments and first-order hyperpolarizabilities. This effect was particularly noticeable when multiple electron withdrawing groups pointing in different directions were present on the same phenyl ring.

Published
1998

239. Effect of osteopathic manipulative treatment on length of stay in a population of preterm infants: a randomized controlled trial

Author

Cerritelli, Francesco, primary, Pizzolorusso, Gianfranco, additional, Ciardelli, Francesco, additional, La Mola, Emiliano, additional, Cozzolino, Vincenzo, additional, Renzetti, Cinzia, additional, D’Incecco, Carmine, additional, Fusilli, Paola, additional, Sabatino, Giuseppe, additional, and Barlafante, Gina, additional

Published
2013
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245. Features of Graft Copolymer Formation Through Reaction of Functionalized Polyolefins with Poly-e-Caprolactam'

Author

Passaglia, Elisa, Picchioni, Francesco, Aglietto, Mauro, Ruggeri, Giocomo, Ciardelli, Francesco, and Engineering and Technology Institute Groningen

Abstract

The reaction in the melt of polyolefins containing 2-diethylsuccinate groups (DES) with poly-ε-caprolactam (PA6) to give a graft copolymer was investigated under different conditions. Even using a large excess of DES groups over the PA6 terminal amino groups the graft copolymer yield resulted only partial thus suggesting a kinetic control of the reaction. The effect of various catalysts was then examined taking into account results obtained in a model reaction between a low molecular weight amine and diethylsuccinate. The results are discussed in terms of side reactions and miscibility of the pristine polymers.

Published
1997

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