A5016195389- Polymer crystallization and properties
- Polymer Nanocomposites and Properties
- biodegradable polymer synthesis and properties
- Organometallic Complex Synthesis and Catalysis
- Synthetic Organic Chemistry Methods
- Diet and metabolism studies
- Advanced Polymer Synthesis and Characterization
- Liver Disease Diagnosis and Treatment
- Carbon dioxide utilization in catalysis
- Block Copolymer Self-Assembly
- Metabolism and Genetic Disorders
- Body Composition Measurement Techniques
- Cardiac Imaging and Diagnostics
- Acute Ischemic Stroke Management
- Nutrition and Health in Aging
- Bariatric Surgery and Outcomes
- Liver Disease and Transplantation
- Obesity, Physical Activity, Diet
- Cardiovascular Function and Risk Factors
- Polyomavirus and related diseases
- Neurosurgical Procedures and Complications
- Fermentation and Sensory Analysis
- Long-Term Effects of COVID-19
- Cardiac Valve Diseases and Treatments
- Sensory Analysis and Statistical Methods
University of Naples Federico II
2013-2025
Istituto delle Scienze Neurologiche di Bologna
2025
University of Konstanz
2024
University of Kansas Medical Center
2023
University of Kansas
2023
Azienda Ospedaliera Bolognini Seriate
2020
Azienda Socio Sanitaria Territoriale Bergamo Est
2020
Azienda Ospedaliera Fatebenefratelli e Oftalmico
2019
University of Foggia
2012-2017
University of Padua
2008-2015
The memory of crystals in the melt stereodefective samples isotactic polypropylene (iPP), characterized by different concentrations rr stereodefects from 0.49 to 10.5 mol %, was analyzed. Experiments self-nucleation and annealing have demonstrated that high contents stereodefects, largely incorporated iPP, produce a significant persists up temperatures well above melting temperature. For low stereodefect (lower than 2–3 %), is erased at (Ts,DI-DII) only few degrees end endotherm (Tm,end),...
Samples of block copolymers (BCP) constituted by semicrystalline blocks linear low-density polyethylene (LLDPE) and isotactic polypropylene (iPP) different lengths (iPP-b-LLDPE) have been prepared living polymerization using the hafnium-based catalyst that provides high steric control propagation propene units. The LLDPE are random ethylene/1-octene with 1-octene concentrations between 1 3 mol %. crystallization behavior morphologies in melt after iPP-b-LLDPE presented. iPP melts at 135 °C,...
The precise use of a widely available and inexpensive metallocene catalyst enabled the synthesis isotactic polypropylene copolymers characterized by copresence randomly distributed cyclic units in backbone unsaturated pendant employing 1,5-hexadiene as comonomer. Optimization polymerization conditions avoided cross-linking phenomena that negatively affects material processing final properties, resulting good yields samples featuring high molecular masses precisely controlled microstructure....
To evaluate the association between BMI levels, muscular strength, muscle composition and physical performance in elderly.
Poly(isoprene)s of different molecular structures have been synthesized with various catalysts based on complexes Nd-, Co-, and Fe-bearing pyridylimine, phosphine, bipyridine ligands. essentially cis-1,4 structure, 3,4 syndiotactic regular alternating cis-1,4-alt-3,4 structure obtained. Moreover, polymers an unusual prevalent but containing units sequences lengths (3 or 5 units) within the chain also The mechanical properties all poly(isoprene)s, some them completely new, investigated. a...
Copolymers of isotactic polypropylene (iPP) with 4-methyl-1-pentene (iPP4MP) were prepared a highly isoselective homogeneous organometallic catalyst in range (4MP) concentrations between about 1.7 and 14 mol %. Crystallization from the melt at different crystallizations temperatures have been performed to study effect 4MP comonomeric units excluded crystals on crystallization α γ forms. All samples crystallize mixtures forms, for each sample, fraction form increases increasing temperature...
Recent advances in Ni(II) catalyzed, nonalternating catalytic copolymerization of ethylene with carbon monoxide (CO) enable the synthesis in-chain keto-functionalized polyethylenes (keto-PEs) high-density polyethylene-like materials properties. Addition norbornene as a bulky, noncrystallizable comonomer during polymerization allows tuning crystallinity these keto-PE by randomly incorporated units polymer chain, while molecular weights are not adversely affected. Such crystallinity-reduced...
The memory of crystalline phase in the melt isotactic polypropylene (iPP) regiodefective samples iPP characterized by different concentrations regiodefects, constituted secondary 2,1 propene units, is studied. self-nucleation (SN) experiments have demonstrated that presence regiodefects produces a strong persists up to temperatures much higher than melting temperature. extension heterogeneous (domain II) containing self-nuclei increases with increasing concentration regiodefects. temperature...
Thermoplastic elastomers (TPEs) are materials combining the processability of thermoplastics and elasticity rubbers. The global value demand TPEs expected to grow in coming years, advancement synthetic chemistry is key driving force. This contribution provides a simple synthesis high-ethylene EPDMs with high molecular weight, narrow weight distribution (1.9 < Mw/Mn 2.3), properties which can be adjusted from soft thermoplastic elastomer. prepared through terpolymerization ethylene propylene...
β-Myrcene was polymerized with catalysts based on pyridyl-imino complexes of neodymium, iron and copper to highly stereoregular polymers.
Isotactic polypropylene–polyethylene block copolymers prepared with living and stereoselective catalyst allow linking incompatible crystalline polymers giving a lamellar morphology defined by competition between phase separation crystallization.
Novel 4-methyl-1-pentene/1,5-hexadiene isotactic copolymers (iP4MPHD) incorporating methylene-1,3-cyclopentane (MCP) cyclic co-units with concentrations in the range 4.4–17.6 mol % have been synthesized by using dimethylpyridylamidohafnium/organoboron catalyst. The influence of MCP co-unit on crystallization behavior and mechanical properties poly(4-methyl-1-pentene) (iP4MP) homopolymer has investigated detail. iP4MPHD comonomer content up to 11 crystallize form II iP4MP from polymerization...
A study of the structure and morphology diblock copolymers composed crystallizable blocks polyethylene (PE) syndiotactic polypropylene (sPP) having different lengths is reported. In both analyzed samples, PE block crystallizes first by cooling from melt (at 130 °C) sPP after at a lower temperature. Small angle X-ray scattering (SAXS) recorded during showed three correlation peaks values vector, q1 = 0.12 nm−1, q2 0.24 nm−1 q3 0.4 indicating development lamellar morphology, where domains...
The crystallization behavior of random propene-octene isotactic copolymers (iPPC8) prepared with a homogeneous metallocene catalyst has been studied. Samples iPPC8 low octene content up to about 7 mol% were isothermally crystallized from the melt at various temperatures. samples crystallize in mixtures α and γ forms polypropylene (iPP). relative amount form increases increasing temperature, maximum (fγ(max)) is achieved for each sample. compared propene-ethylene, propene-butene,...
Abstract The crystallization behavior of propene–ethylene (iPPC2), propene–butene (iPPC4), propene–pentene (iPPC5), and propene–hexene (iPPC6) isotactic copolymers, prepared with single center metallocene catalysis, is described. Thanks to the perfectly random distribution comonomers along macromolecules, these copolymers can be considered as model for polypropylene (iPP) that mainly defined by average length regular propene sequences. A iPP described based on definition a double effect...
Multiple symmetric lipomatosis (MSL) is a rare disease of unknown etiology, characterized by the presence multiple, symmetrical, noncapsulated lipomas, mostly in neck and upper trunk. To date, there no effective medical treatment MSL. Surgical based on 2 options, namely, lipectomy and/or liposuction. In this retrospective study, we compare traditional with ultrasound-assisted Our initial experience demonstrates that liposuction procedure can be applied to patients MSL, allowing simultaneous...
Incorporation of pentene in isotactic polypropylene produces a memory the crystalline state melt that persists up to temperatures higher than melting temperature giving self-nucleation and favoring crystallization γ form.