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EnglishSome bisphenol-A copolyformals, containing in the main chain different amounts of a Ni-diimine nonlinear optical (NLO)-chromophore, eicosane and/or 2-butene units, were synthesized by condensation reaction between dibromomethane and suitable mixtures of Ni(II)/Schiff base complex, 1,20-di(bisphenol-A)ether-eicosane and/or 1,4-di(bisphenol-A)ether-2-butene. Structural composition and thermal properties of polymeric materials were inferred by analyses by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS), nuclear magnetic resonance (NMR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC) and thermogravimetry (TG). MALDI-TOF data show that both Ni-diimine and unsaturated units are present in the copolyformals with a homogeneous arrangement in all the polymer mass range (GPC data). It has also been ascertained that the glass transition temperature (Tg) of the copolymers changes as a consequence of the abundance of aliphatic units in the macromolecules (DSC data). Cross-linking experiments of the copolymer at temperatures near the Tg value and under UV irradiation were also performed. Copyright (c) 2006 John Wiley & Sons, Ltd.
| Titolo: | Synthesis and matrix-assisted laser desorption/ionization time-of-flight characterization of bisphenol-A copolyformals containing nickel (II)/Schiff base, eicosane and 2-butene units in the main chain |
| Autori interni: | |
| Data di pubblicazione: | 2006 |
| Rivista: | |
| Handle: | http://hdl.handle.net/20.500.11769/10085 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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