A5046137515- biodegradable polymer synthesis and properties
- Layered Double Hydroxides Synthesis and Applications
- Advanced Polymer Synthesis and Characterization
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- 2D Materials and Applications
- Conducting polymers and applications
- Silicone and Siloxane Chemistry
- Lanthanide and Transition Metal Complexes
- MXene and MAX Phase Materials
- Polyoxometalates: Synthesis and Applications
- Polymer Nanocomposites and Properties
- Photopolymerization techniques and applications
- Organometallic Complex Synthesis and Catalysis
- Carbon Nanotubes in Composites
- Photochemistry and Electron Transfer Studies
- Advanced Photocatalysis Techniques
- Nanocomposite Films for Food Packaging
- Polymer crystallization and properties
- Graphene research and applications
- Carbon dioxide utilization in catalysis
- Perovskite Materials and Applications
- Photochromic and Fluorescence Chemistry
- Crystallography and molecular interactions
- Radical Photochemical Reactions
Institute for the Chemistry of OrganoMetallic Compounds
2016-2025
National Research Council
2021-2025
Istituto di Scienza e Tecnologie dell'Informazione "Alessandro Faedo"
2012-2016
University of Pisa
2000-2010
Institute for Chemical and Physical Processes
2002
University of Bologna
2001-2002
Industriale Chimica (Italy)
2001
The depletion of fossil fuels and environmental concerns have driven the development sustainable materials, including bio-based biodegradable plastics, as alternatives to conventional plastics. Although these plastics aid in waste management climate change mitigation, their vulnerability oxidative degradation impacts longevity, durability, performance. Natural antioxidants such tocopherols, flavonoids, tannins, extracted from plants or agri-food waste, present a alternative synthetic...
Black phosphorus (bP) has been recently investigated for next generation nanoelectronic multifunctional devices. However, the intrinsic instability of exfoliated bP (the nanoflakes) toward both moisture and air so far overshadowed its practical implementation. In order to contribute fill this gap, we report here preparation new hybrid polymer-based materials where nanoflakes (bPn) exhibit a significantly improved stability. The have prepared by different synthetic paths including: (i) mixing...
Polyolefin-based materials are increasingly being used in many industrial applications for packaging, automotive and construction materials. The recent developments of research have been aimed at making these materials, often complex, mixtures, block copolymers, micro- nanocomposites with inorganic organic fillers, more efficient environmentally friendly (through recycling processes, the use bio-polyolefins). In this context, functionalized polyolefins, on one hand, play a fundamental role...
Immobilizing natural antioxidant and biologically active molecules in layered double hydroxides (LDHs) is an excellent method to retain release these substances a controlled manner, as well protect them from thermal photochemical degradation. Herein, we describe the preparation of host-guest systems based on LDHs rosmarinic glycyrrhetinic acids, two obtained extraction herbs licorice root, respectively, with antioxidant, antimicrobial, anti-inflammatory properties. Intercalation between...
Abstract Combining oxidative plasma pre‐treatment of carbon fibers (CFs) with subsequent functionalization branched polyethyleneimine (b‐PEI) resulted in b‐PEI‐modified CFs. First, CFs were oxidized by treatment, dipped into a water solution b‐PEI, and finally heated to promote reactions between the amine functionalities b‐PEI carboxyl groups generated activation. By ajusting operational parameters low‐pressure oxygen concentration, reaction time, we could modulate content grafted b‐PEI. The...
Abstract Poly(lactic acid) ( PLA ) was plasticized with ester oligomers having different structure, molecular weight and carboxylic acid content as end‐functionalities. In particular a low‐molecular‐weight polyester of adipic 1,2‐propanediol (an adipate‐based derivative) were used compared. The plasticizing capability tested the final structural thermal properties matrix evaluated by correlating various features to chemical physical characteristics these additives. SEC , DSC TGA tensile...
Abstract Post‐polymerization modification is an attractive approach to extend applications and convert commodity plastics into products with new, desirable tunable properties. Among the post‐polymerization methods, nitroxide radical coupling (NRC) reaction has been shown be a convenient versatile way graft specific functionalities onto polymer chains control onset yield of crosslinking during peroxide‐initiated processes. The use 2,2,6,6‐tetramethylpiperidine‐1‐oxyl (TEMPO) its derivatives...
Hybrid materials, containing a 2D filler embedded in polymeric matrix, are an interesting platform for several applications, because of the variety properties that can impart to polymer matrix when dispersed at nanoscale. Moreover, novel could arise from interaction between two. Mostly bulk these materials have been studied so far, especially focusing on how changes properties. Here we propose complete change perspective by using hybrid nanocomposite material as suitable engineer and exploit...
Abstract Nitroxyl radicals were used as functionalizing agents during the free radical postreactor modification process of polyolefins carried out in melt. The 4‐hydroxy‐2,2,6,6‐tetramethylpiperidine‐1‐oxyl (HO‐TEMPO) and 4‐benzoyloxy‐2,2,6,6‐tetramethylpiperidine‐1‐oxyl (BzO‐TEMPO) successfully grafted onto a polyethylene‐based material (ethylene‐ co ‐1‐octene copolymer) by coupling reaction with polymer macroradicals; these last formed H‐abstraction through peroxide addition....
Abstract Low‐density polyethylene/layered double hydroxide (LDPE/LDH) nanocomposites were prepared via melt extrusion using organo‐LDH particles and maleic anhydride functionalized polyethylene as compatibilizer. Processing parameters, preparation method, feed composition properly modulated until obtaining with intercalated/exfoliated morphologies, an uniform distribution of nanolayers, evidenced by X‐ray diffraction transmission electron microscopy analysis. These materials showed a...
In order to increase their sustainability, antimicrobial renewable molecules are fundamental additions consumer goods. Rosmarinic acid is extracted from several terrestrial plants and represents an effective anti-microbial agent. Ulvan, algae, polysaccharide. The present review dedicated discussing the sources extraction methodologies for obtaining rosmarinic ulvan. Moreover, preparation of bioanosystems, integrating two with organic or inorganic substrates, reviewed as effectiveness...
Hybrid systems with antioxidant properties have been developed by integrating bioactive compounds derived from plant resources layered double hydroxides (LDHs). Anion exchange has used to substitute intercalated nitrate anions in Mg-Al LDH carboxylate trans-ferulic acid, rosmarinic and 18β-glycyrrhetinic acid. These organic are known for their powerful antioxidant, anti-inflammatory antimicrobial highly suitable cosmetics, biomedicine, food packaging. To enhance sustainability, a multistage...
Functionalized poly(butylene succinate) (PBS) samples were prepared by a post-polymerization method based on the coupling reaction between TEMPO derivatives bearing different functionalities and PBS macroradicals generated H-abstraction using peroxide. 4-Benzoyloxy-2,2,6,6-tetramethylpiperidine-1-oxyl (BzO-TEMPO) 4-(1-naphthoate)-2,2,6,6-tetramethylpiperidine-1-oxyl (NfO-TEMPO), pro-fluorescent nitroxide, successfully grafted PBS, as revealed MALDI TOF MS UV-Vis spectroscopy. The...
Abstract The radical functionalization of poly(lactic acid) (PLA) with maleic anhydride (MA) was thoroughly investigated using different chemical approaches the purpose controlling both grafting degree and structure/architecture final products. First, a new methodology developed able to provide clear evidence identify structure inserted groups. method consists in derivatization reaction grafted succinic fluorescent derivative (1‐naphthylmethylamine), which allows be assessed qualitatively...
Low molecular weight polyesters were end-functionalized with ammonium and carboxylate salts used in ionic exchange reactions respectively cationic (MMT) anionic (LDH) clays.The hybrid organic-inorganic substrates structurally analysed to determine the ester oligomers' modification degree their thermal behaviour owing confinement effects.The dispersion of such hybrids polylactic acid (PLA) matrix was performed ultimate structural, morphological properties collected nanocomposites investigated...
The covalent immobilization of hindered phenol groups, with potential antioxidant activity, onto an ethylene/α-olefin (EOC) copolymer was carried out by the nitroxide radical coupling (NRC) reaction performed in melt a peroxide and 3,5-di-tert-butyl-4-hydroxybenzoyl-2,2,6,6-tetramethylpiperidine-1-oxyl (BHB-T). Functionalized EOC (EOC-g-(BHB-T)) exposed to photo- thermo-oxidation. By comparison some model compounds bearing (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO) moiety or unit, it...