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The present work deals with the characterisation and multi-scale modelling of the large-strain response of ternary polymer blends. In a homogenised constitutive modelling approach, particularly the deformation behaviour featuring plastic dilatancy is investigated. Concerning the micromechanical modelling, constitutive models are proposed for the blends' individual phases and compared regarding their capabilities to capture the composition-dependent fracture toughness in unit cell models.
Civil engineering, surveying & building --- Polymerblends --- Materialcharakterisierung --- Materialmodellierung --- mikromechanische Modellierung --- Einheitszellmodelle --- polymer blends --- material characterisation --- material modelling --- micromechanical modelling --- unit cell models
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Additive manufacturing (AM) processes are gaining more and more attention from many industrial fields, mainly because they are revolutionizing the components’ designs and production lines. The complete industrialization of these processes has to be supported by the full understanding of correlation between AM building conditions and the final materials’ properties. Another critical aspect is that nowadays only a reduced number of materials processable by AM are available on the market. It is, therefore, fundamental to widen the materials’ portfolio, and to study and develop new materials that can take advantage of these unique building processes.
amorphous poly(lactide acid) --- poly(styrene-co-methyl methacrylate) --- polymer blends --- filament extrusion --- 3D printing --- additive manufacturing --- silicon nitride --- high performance ceramics --- photopolymerisation --- lithography-based ceramic manufacturing --- fused-deposition modeling --- mechanical properties --- thermal behavior --- polyetherimide --- fused filament modelling --- design of experiments --- directed energy deposition --- AISI 316L --- microstructure --- LPBF --- as-built --- as-cast --- microhardness --- tensile test --- Ni–Cu alloy --- materials development --- polymers --- metals --- ceramics
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This reprint includes research articles on various applications of electrospun nanofibers. Nanofibers have potential to be used in tissue engineering, energy harvesting, sensors, separators, water filtration, air filtration, and other applications as well. This Special Issue has received 11 interesting research articles, which covers such application areas.
nanofibers --- fibroblast --- cell culture --- cell adhesion --- cell viability --- biobased polyester --- silver nanoclusters --- sericin --- cellulose acetate --- electrospinning --- Antibacterial Nanofibers --- polybutylene succinate --- filter membrane --- electrospun fiber --- graphene oxide --- protein adsorption --- nanofiber --- hollow ball --- alginate --- tissue engineering --- 3D structure --- nanofiber fabric --- protein --- affinity adsorption --- selective separation --- poly(homocysteine thiolactone) --- sensing --- catalysis --- nanonet --- polyacrylonitrile --- surfactant --- meltblown --- nanofiber/nanonet --- hybrid nanofiber --- cytotoxicity --- folic acid --- in vitro study --- drug release --- polyimide --- solid state batteries --- composite polymer electrolyte --- photo polymerization --- fireproof --- cellulose nanofiber --- silver nanoparticle --- orange essential oil --- antibacterial activity --- polymer composites --- nanoparticle --- polymer blends --- medical applications --- n/a
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Over the last decades, natural fibers have received growing attention as alternatives to synthetic materials for the reinforcement of polymeric composites. Their specific properties, low price, health advantages, renewability and recyclability make natural fibers particularly attractive for these purposes. Furthermore, natural fibers have a CO2-neutral life cycle, in contrast to their synthetic counterparts. However, natural fibers are also widely known to possess several drawbacks, such as a hydrophilic nature, low and variable mechanical properties, poor adhesion to polymeric matrices, high susceptibility to moisture absorption and low aging resistance. Therefore, extensive research has been conducted on natural fiber-reinforced composites in the last 20 years. In this context, this book presents several interesting papers concerning the use of natural fibers for the reinforcement of polymer-based composites, with a focus on the evaluation of their mechanical performances, ballistic properties, rheological behavior, thermal insulation response and aging resistance in humid or aggressive environments.
flax FRP --- basalt FRP --- glass FRP --- wood beam --- bending --- hybrid FRP --- flax fiber --- nano-clay --- water uptake --- hygrothermal properties --- coaxial electrospinning --- length of straight fluid jet --- spreading angle --- nanoribbons --- linear relationship --- curaua fibers --- graphene oxide coating --- epoxy composites --- ballistic performance --- recycled cotton fibers --- stiffness --- micromechanics --- Young’s modulus --- polymer matrix composites --- flax fibers --- surface treatments --- adhesion --- polymer-matrix composites (PMCs) --- composite laminates --- low-velocity impact --- delamination --- X-ray micro CT --- polypropylene --- basalt fibers --- composite laminate --- flexural --- impact damage --- dog wool fibers --- fillers --- polyurethane --- eco-composites --- renewable resources --- poly(lactic acid) --- poly(butylene succinate) --- plasticizer migration --- diffusion --- natural fibre composites --- mechanical properties --- elastic behaviour --- viscous response --- empty fruit bunch fiber (EFB) --- polybutylene succinate (PBS) --- starch --- glycerol --- characterizations --- biocomposite --- polymer Blends --- Mopa-Mopa resin --- biobased composite --- fique fibers --- wood–plastic --- leather waste --- thermoplastic starch --- mechanical characterization --- thermal characterization --- n/a --- Young's modulus --- wood-plastic
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Polymer science and technology in Italy represent long-lasting and interdisciplinary fields in which chemistry, physics, and engineering mix together to produce studies which are considered among the best in the world. Several research groups coming from very different fields often collaborate in the design of the material, of the part, and of the processing technology to obtain innovative products with outstanding, new, and smart properties. Examples of the contributions of Italian research in the field are featured in top journals and conferences throughout the world. This Special Issue collects an overview of polymer science and technology in Italy. The research topics include: polymer composites and nanocomposites; biodegradable polymers; polymers with special properties and smart polymers; advanced characterization of polymers; new and innovative polymer processes; modeling of polymer processing; polymeric materials in additive manufacturing; process–properties relationships; polymeric parts for special applications.
polyhedral oligomeric silsesquioxanes --- nanocomposites --- POSS --- polystyrene --- thermal behavior --- SEM analysis --- soy flour --- soy protein isolate --- insoluble carbohydrates --- periodate oxidation --- aldehydes generation --- condensation reactions --- soy adhesives --- biodegradable polymers --- rheological properties --- irrigation pipes --- soil burial test --- polyesters --- Bio-Flex® --- Mater-Bi® --- polymer degradation --- photo-oxidation --- pectin --- alginate --- biocomposites --- food packaging --- degradable films --- ionic liquids --- 3D printing --- digital light processing --- CO2 capture --- furanic polymer --- spectroscopy --- solid-state 13C-NMR --- FTIR --- Raman --- linear structure --- ring opening --- γ-lactone --- Diels-Alder --- SAS coprecipitation --- controlled drug delivery systems --- microparticles --- eudragit --- supercritical carbon dioxide --- dental materials --- composite resin --- layered double hydroxide --- calcium bentonite --- antibiofilm activity --- injection molding --- structure/properties relationship --- cavity temperature fast modulation --- chitosan --- cyclodextrin --- macromolecular complex --- dalargin --- enkephalin --- chymotrypsin --- NMR --- oral peptide delivery --- peptide stability --- cold-cure --- epoxy resins --- organic-inorganic hybrids --- sol-gel --- layered double hydroxides --- carbon nanotubes --- electrical properties --- polyphenols --- flavonoids --- furanics --- sulphur --- bio-polymers --- pentane --- heating value --- mulch films --- Ecovio® --- polylactide --- poly(butyleneadipate-co-butyleneterephtalate) --- polyethylene --- polymer melt --- primary and secondary relaxations --- Johari-Goldstein relaxation --- bond reorientation --- vibrational dynamics --- molecular-dynamics simulations --- UV-LED curing --- epoxy-acrylate resin --- biochar --- multiwalled carbon nanotubes --- composites --- reduced graphene oxide --- polyketone functionalization --- electrically-conductive nanocomposites --- UHMWPE --- wear tests --- bio-activity --- history --- cyclodextrin nanosponge --- crosslinked polymer --- diclofenac --- mefenamic acid --- molecular imprinting --- delayed addition --- binding isotherm --- binding selectivity --- imprinting factor --- polymers --- life cycle assessment --- polymeric materials --- sustainability --- plastic --- LCA --- additive manufacturing --- LCD printing --- epoxy --- polymer blends --- thermomechanical properties --- n/a
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Membranes play an enormous role in our life. Biological cell membranes control the fluxes of substances in and out of cells. Artificial membranes are widely used in numerous applications including “green” separation processes in chemistry, agroindustry, biology, medicine; they are used as well in energy generation from renewable sources. They largely mimic the structure and functions of biological membranes. The similarity in the structure leads to the similarity in the properties and the approaches to study the laws governing the behavior of both biological and artificial membranes. In this book, some physico-chemical and chemico-physical aspects of the structure and behavior of biological and artificial membranes are investigated.
ion exchange membranes --- profiled membranes --- corrugated membranes --- electrodialysis --- reverse electrodialysis --- membrane capacitive deionization --- hydrodynamic --- mass transfer --- thermal pressing --- 3D printing --- acid whey --- pulsed electric field --- demineralization --- scaling --- lactic acid removal --- ion exchange membrane --- profiled membrane --- CFD --- pressure drop --- structural mechanics --- fluid-structure interaction --- whey --- pulsed electrodialysis reversal --- fouling --- electrodialysis with filtration membrane (EDFM) --- triple size-selective separation --- glucose uptake --- bioassay-guided validation --- bioactive peptides --- electro-convective instability --- overlimiting current --- concentration polarisation --- particle tracking --- biomimetic membrane --- ion pair amphiphile --- cholesterol --- molecular dynamics --- water permeation --- air-pollutant nanoparticle --- coarse-grained model --- interaction --- molecular dynamics simulation --- pulmonary surfactant monolayer --- PP membrane --- O2 plasma --- TiO2 nanoparticles --- UV treatment --- hydrophilicity --- biopolymer electrolyte membranes --- XRD analysis --- FTIR study --- Morphology --- Impedance study --- EDLC fabrication --- LaPO4: Ce --- Tb --- ionic liquid --- supported liquid membrane --- photoluminescence --- hyperbranched polymer --- crosslinking --- alkaline fuel cells --- ionic conductivity --- water swelling --- ion-exchange membranes --- ion-exchange particles --- heterogeneity --- electrokinetics --- current–voltage curves --- ion-exchange membrane --- Fujifilm --- Neosepta --- phosphate transport --- limiting current density --- voltammetry --- zinc–air battery --- separator --- hydroxide exchange membrane --- anion-exchange membrane --- ionic channel --- polyphenylene oxide --- polymer inclusion membrane --- ionic liquids --- volatile fatty acids (VFAs) --- acetic acids --- hexanoic acids --- anomalous water diffusion --- computer simulations --- ion channel gating --- nano-size water pore --- physico-chemical properties of confined water --- protein-water interactions --- TRPV1 channel permeability for water --- water dynamics --- water H-bonding --- NETs --- inner nuclear membrane --- outer nuclear membrane --- nuclear envelope --- polymer blends --- impedance study --- dielectric properties --- electric modulus study --- loss tangent peaks --- ion transport parameters --- Trukhan model --- salinity gradient power --- concentration difference --- electrolyte composition --- n/a --- current-voltage curves --- zinc-air battery
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