0000000000390452

AUTHOR

Enrico Montani

showing 3 related works from this author

Characterization of a fiber-reinforced new fully aromatic liquid crystalline polymer

1998

A new rigid liquid crystalline polymer that demonstrates good mechanical and thermomechanical properties and acceptable processing temperature has been recently synthesized and characterized. The melting temperature and some thermomechanical properties do not seem, however, suitable for use in some applications at high temperature or in the presence of aggressive fluids. The use of appropriate inorganic fillers can overcome these shortcomings. In this work the new LCP, polymerized in a bench-scale apparatus, and the same sample filled with carbon fibers are characterized. The properties of the carbon fiber filled LCP are compared with those of another filled wholly aromatic commercial LCP,…

chemistry.chemical_classificationFiller (packaging)Materials scienceCarbon fiber reinforced plastics Composition effects Creep Glass fiber reinforced plastics Thermal effects Semirigid liquid crystalline polymersThermomechanical properties Liquid crystal polymersLiquid crystallineMelting temperature02 engineering and technologyPolymer021001 nanoscience & nanotechnologyCondensed Matter PhysicsCharacterization (materials science)020303 mechanical engineering & transportsSettore ING-IND/22 - Scienza E Tecnologia Dei Materiali0203 mechanical engineeringchemistryPolymerizationThermalCeramics and CompositesA fibersComposite material0210 nano-technology
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Synthesis and Characterization of a New Fully Aromatic LCP

1996

Abstract Liquid crystal polymers (LCP)are a relatively new class of polymers with very interesting and unusual properties. In particular, easy processability and outstanding mechanical and barrier properties make them very attractive. Unfortunately the high stiffness of their chains often leads to compounds having very high melting points and consequently to unprocessable materials. By adding a flexible segments in the chain backbone the LCPs become processable at lower temperatures but lower properties are displayed. A new rigid liquid crystalline polymer, having excellent physical properties, good processing temperature and a good cost/performance compromise, is described in this work. Th…

chemistry.chemical_classificationLIQUID-CRYSTALLINE POLYMERSMaterials sciencePolymer scienceLiquid crystallineHigh stiffnessPolymerCondensed Matter PhysicsBLENDSCharacterization (materials science)Condensed Matter::Soft Condensed MatterSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialichemistryLiquid crystalPolymer chemistryMelting pointMolecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
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Synthesis, properties and processability of a new class of semirigid liquid crystalline copolyesteramides

1995

Abstract A new family of semirigid main chain liquid crystalline polymers (LCPs), referred to as SBAN, characterized by fairly good processability and mechanical properties, and improved thermal resistance, have been synthesized by the melt polycondensation of sebacic acid (S), 4,4′-dihyhxybiphenyl (B), 4-aminobenzoic acid (A), and 2-hydroxy-6-naphthoic acid (N), in a wide range of compositions. The molar concentration of the A ahd N units, in these LCPs must be kept lower than ca 40 and 60%, respectively, in order to avoid the formation of homopolymeric blocks, which impair spinnability. The presence of A units grants the formation of hydrogen bonds between neighboring macromolecules, and …

chemistry.chemical_classificationMaterials scienceCondensation polymerMolar concentrationSebacic acidHydrogen bondPolymerCondensed Matter PhysicsPolyesterchemistry.chemical_compoundchemistryUltimate tensile strengthPolymer chemistryMacromolecule
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