A5081050509- Synthesis and properties of polymers
- Silicone and Siloxane Chemistry
- Inorganic and Organometallic Chemistry
- Polymer Nanocomposites and Properties
- Synthesis and biological activity
- Molecular spectroscopy and chirality
- Synthesis and Characterization of Heterocyclic Compounds
- Epoxy Resin Curing Processes
- Structural and Chemical Analysis of Organic and Inorganic Compounds
- Chemical Reaction Mechanisms
- Supramolecular Chemistry and Complexes
- Advanced ceramic materials synthesis
- Thermal and Kinetic Analysis
- Chemical Synthesis and Reactions
- Synthesis and Properties of Aromatic Compounds
- Metal complexes synthesis and properties
- DNA and Nucleic Acid Chemistry
- Magnetism in coordination complexes
- Synthetic Organic Chemistry Methods
- Crystal structures of chemical compounds
- Organic Chemistry Cycloaddition Reactions
- Synthesis and Reactions of Organic Compounds
- Molecular Sensors and Ion Detection
- Synthesis and Reactivity of Sulfur-Containing Compounds
- Electron and X-Ray Spectroscopy Techniques
University of Catania
2011-2020
University of Salerno
1996
Istituto di Chimica Biomolecolare
1992
Hautes Études d'Ingénieur
1987
Institute of Industrial Organic Chemistry
1971
Istituti di Ricovero e Cura a Carattere Scientifico
1970
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReaction of tosylamide monosodium salt with bis(halomethyl) compounds: an easy entry to symmetrical N-tosyl aza macrocyclesFrancesco Bottino, Michele Di Grazia, Paolo Finocchiaro, Frank R. Fronczek, Antonino Mamo, and Sebastiano PappalardoCite this: J. Org. Chem. 1988, 53, 15, 3521–3529Publication Date (Print):July 1, 1988Publication History Published online1 May 2002Published inissue 1 July...
Abstract Polystyrene/montmorillonite nanocomposites were prepared via in situ bulk polymerization. New imidazolium salts used to modify montmorillonite obtaining an improvement thermal stability comparison with a modified standard alkylammonium cation. The synthesized cations facilitate the formation of partially exfoliated structures because presence their structure polymerizable group. polystyrene/montmorillonite characterized by X‐ray diffraction, thermogravimetric analysis, scanning...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCalix[4]arenes with pyridine pendant groups. Regioselective proximal alkylation at the "lower rim"Francesco Bottino, Luigi Giunta, and Sebastiano PappalardoCite this: J. Org. Chem. 1989, 54, 23, 5407–5409Publication Date (Print):November 1, 1989Publication History Published online1 May 2002Published inissue 1 November 1989https://pubs.acs.org/doi/10.1021/jo00284a001https://doi.org/10.1021/jo00284a001research-articleACS PublicationsRequest reuse...
Abstract A comparative study concerning the thermal stability of polystyrene (PS) and three polyhedral oligomeric silsesquioxane/polystyrene (POSS/PS) nanocomposites formula R 7 R′(SiO 1.5 ) 8 /PS (where = isobutyl R′ phenyl), at various (3, 5, 10%) POSS concentration was carried out in both inert (flowing nitrogen) oxidative (static air) atmospheres. Nanocomposites were synthesized by situ polymerization styrene presence experimental filler obtained compounds, determined 1 H NMR...
A series of three novel dumbbell shaped polyhedral oligomeric silsesquioxanes (POSS)/ polystyrene (PS) nanocomposites, at different POSS contents (3%, 5% and 10% w/w), was synthesized characterized in order to investigate the effects this new bridged structure on filler‐polymer interaction then thermal behavior obtained polymer nanostructured materials (PNMs). Nanocomposites were by situ polymerization styrene actual concentration PNMs checked 1 H NMR spectroscopy. Scanning electron...
Abstract The thermal degradation of two polyhedral oligomeric silsesquioxane/polystyrene (POSS/PS) nanocomposites formula R 8 (SiO 1.5 ) POSS/PS and R′ 1 7 (where = Phenyl Cyclopentyl), at 5% POSS concentration, was studied in both inert (flowing nitrogen) oxidative (static air) atmospheres. Compounds were prepared by the polymerization styrene presence POSS. Degradations carried out into a thermobalance, scanning mode, various heating rates, obtained thermogravimetric (TG) curves discussed...
Some new Polystyrene (PS) nanocomposites were prepared by using two Polyhedral Oligomeric Silsesquioxanes (POSSs), namely RR' 7 (SiO 1.5 ) 8 (where R = 4-methoxyphenyl or 2,4-difluorophenyl and R' cyclopentyl), as fillers, their degradation was studied to investigate the effect of electron-donor electron-withdrawing character phenyl group substituents on thermal stability.Nanocomposites synthesized in situ polymerization styrene presence various concentrations POSS.Proton nuclear magnetic...
Variously substituted polyhedral oligomeric silsesquioxanes (POSSs)/polystyrene (PS) nanocomposites of general formula R 7 R′(SiO 1.5 ) 8 /PS (where = isobutyl and R′ 4‐methoxyphenyl, 4‐methylphenyl, 3,5‐dimethylphenyl, 4‐fluorophenyl, 2,4‐difluorophenyl, 4‐chlorophenyl) were prepared by in situ polymerization styrene the presence 5% w/w POSS. The actual filler concentration obtained was checked 1 H NMR spectroscopy. Scanning electron microscopy FTIR spectroscopy evidenced filler‐polymer...
Abstract Properties of some linear oligobenzyls corresponding to polybenzyl, poly(2,5‐dimethylbenzyl), and poly(2,3,5,6‐tetramethyl‐benzyl) systems are correlated those relative polymers. From infrared x‐ray diffraction data, evidence is found that magnified image oligomers tend assume the same crystal structure polymer as early teh tetramer or pentamer stage. Syntheses described. Linear, crystalline polymers, necessary for comparison with oligomers, have been prepared characterized....
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemistry of N-heterocyclic sulfur compounds. Reaction 2,5-dimercapto-1,3,4-thiadiazoles with 1,.omega.-dibromoalkanes. Synthesis tetrathia[(n + 2).(n 2)](2,5)-1,3-4-thiadiazolophanes and dithia[(n 1).(n 1)](3,5)-1,3,4-thiadiazolinophanedithionesSebastiano Pappalardo, Francesco Bottino, Corrado TringaliCite this: J. Org. Chem. 1987, 52, 3, 405–412Publication Date (Print):February 1, 1987Publication History Published online1 May 2002Published...