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Book
POSS-Based Polymers
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ISBN: 3039219952 3039219944 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

The combination of functional polymers with inorganic nanostructured compounds has become a major area of research and technological development owing to the remarkable properties and multifunctionalities deriving from their nano and hybrid structures. In this context, polyhedral oligomeric silsesquioxanes (POSSs) have increasing importance and a dominant position with respect to the reinforcement of polymeric materials. Although POSSs were first described in 1946 by Scott, these materials, however, have not immediately been successful if we consider that, starting from 1946 and up to 1995, we find in the literature 85 manuscripts regarding POSSs; which means that less than two papers per year were published over 50 years. Since 1995, we observe an exponential growth of scientific manuscripts concerning POSSs. It is changing from an annual average of 20 manuscripts for the period 1995–2000 to an annual average of about 400 manuscripts, with an increase of 2800%. The introduction of POSSs inorganic nanostructures into polymers gives rise to polymer nanostructured materials (PNMs) with interesting mechanical and physical properties, thus representing a radical alternative to the traditional filled polymers or polymer compositions.

Keywords

graphene oxide --- n/a --- lithium ion battery --- liquefied --- polypropylene --- silsesquioxanes --- self-assembly behaviors --- nanocomposites --- Octavinyl-POSS --- polyimide --- thermal properties --- polyhedral oligomeric silsesquioxane-based ionic liquids --- aqueous self-assembly --- bi-functional POSS --- blends --- low refractive material --- cellular structure --- mechanism analysis --- morphology --- flame retardant --- hydrogels --- mercapto-modified --- damping --- POSS nanoparticles --- phthalonitrile polymers --- mechanical properties --- flame-retardant mechanism --- thiol-ene ‘click’ reaction --- POSS --- poly(?-caprolactone) --- siloxane-silsesquioxane resins --- polyhedral oligomeric silsesquioxane (POSS) --- surface properties --- fluoropolymer --- thiol–ene “click” reaction --- Monomethacryloxy POSS --- monodisperse --- thermogravimetry --- OLEDs --- fluorescent sensors --- double-decker-shaped silsesquioxane (DDSQ) --- dielectric constant --- composites --- organic-inorganic hybrids --- poly(?-caprolactone) nanocomposite --- POSS-based copolymer --- organic-inorganic crosslinking --- optoelectronics --- flame retardancy --- cone calorimeter tests --- lauryl methacrylate --- octa-ammonium POSS --- nitroaromatic explosives --- phthalonitrile-polyhedral oligomeric silsesquioxane copolymers --- cyanate ester --- thermoplastic polyurethane --- sodium alginate --- giant surfactant --- benzoxazine --- thermal stability --- temperature responsiveness --- polymerization kinetics --- mechanical performance --- Si@C anode --- ridgid polyurethane foams --- epoxy resin --- grafting synthesis --- direct synthesis --- filler --- bridged silsesquioxane --- hydrophobic modification --- dispersion --- polyhedral oligomeric silsesquioxanes --- anchor effect --- thiol-ene 'click' reaction --- thiol-ene "click" reaction


Book
Sol-Gel Chemistry Applied to Materials Science
Author:
ISBN: 3039213547 3039213539 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Sol–gel technology is a contemporary advancement in science that requires taking a multidisciplinary approach with regard to its various applications. This book highlights some applications of the sol–gel technology, including protective coatings, catalysts, piezoelectric devices, wave guides, lenses, high-strength ceramics, superconductors, synthesis of nanoparticles, and insulating materials. In particular, for biotechnological applications, biomolecules or the incorporation of bioactive substances into the sol–gel matrix has been extensively studied and has been a challenge for many researchers. Some sol–gel materials are widely applied in light-emitting diodes, solar cells, sensing, catalysis, integration in photovoltaic devices, and more recently in biosensing, bioimaging, or medical diagnosis; others can be considered excellent drug delivery systems. The goal of an ideal drug delivery system is the prompt delivery of a therapeutic amount of the drug to the proper site in the body, where the desired drug concentration can be maintained. The interactions between drugs and the sol–gel system can affect the release rate. In conclusion, the sol–gel synthesis method offers mixing at the molecular level and is able to improve the chemical homogeneity of the resulting composite. This opens new doors not only regarding


Book
Graphene and Other 2D Layered Nanomaterials and Hybrid Structures: Synthesis, Properties and Applications
Authors: ---
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

ResearchGate academic profile and social networking site for researchers: "Graphene, one of the most interesting and versatile materials of modern times, is recognized for its unique properties, which are strongly different from its bulk counterpart. This discovery has recently stimulated research on other two-dimensional (2D) systems, all consisting of a single layer of atoms. Two-dimensional materials have also emerged as major candidates for use in next-generation applications as a result of the rapid discovery of their any properties. In this Special Issue, we have collected a few recent studies that examine some of these new areas of work in the field of 2D materials."


Book
Photoactive Materials: Synthesis, Applications and Technology
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Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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This book presents a collection of 13 original research articles that focus on the science of light–matter interaction. This area of science has been led to some the greatest accomplishments of the past 100 years, with the discovery of materials that perform useful operations by collecting light or generating light from an outside stimulus. These materials are at the center of a multitude of technologies that have permeated our daily life; every day we rely on quantum well lasers for telecommunication, organic light emitting diodes for our displays, complementary metal–oxide–semiconductors for our camera detectors, and of course a plethora of new photovoltaic cells that harvest sunlight to satisfy our energy needs. In this book, top-rated researchers present their latest findings in the field of nano-particles, plasmonics, semi-conductors, magneto-optics, and holography.


Book
Recycling and Resource Recovery from Polymers
Authors: --- ---
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Environmental challenges posed by wrong end of lifeplastic management drive the plastics recycling schemes for energy recovery and cutting emissions, penalties, energy consumption, non-renewable resources, and manufacturing costs. Plastic recycling has the lowest environmental impact on global warming potential and total energy use. However, under-utilised plastic wastes due to low value issues with sorting/contamination pose major challenges. Novel technologies drive innovation in a circular economy model for plastics and employ reuse, recycling and responsible manufacture solutions, support the development of new industries and jobs, reduce emissions and increase efficient use of natural resources (including energy, water and materials). Many economies are working towards achieving a zero plastic waste economy. This Special Issue covers the applications of recycled plastics in the areas of energy recovery/alternative fuels, economic analyses, bitumen additives, flame retardants, recycled polymer nanocomposites to enhance the mechanical property, thermomechanical recycling to improve physical properties, mechano-chemical treatment, cryogenic waste tyre recycling, application in decarbonizing technology, e.g., cement industry, waste characterization, improving agricultural soil quality, as smart fertilizers. The Editors express their appreciation to all the contributors across the world in the development of this reprint. This reprint gives different perspectives and technical ideas for the transformation of plastic wastes into value-added products and to achieve higher recycling rates in the coming years.

Keywords

lignin --- bituminous modifier --- lignin modified bitumen --- chemical analysis --- rheological behavior --- mechanical properties --- road engineering --- open graded friction course --- viscoelastic properties --- creep compliance --- relaxation modulus --- dynamic modulus --- linear correlation --- polymer-modified asphalt --- Hamburg wheel-tracking --- indirect tensile strength --- co-pyrolysis --- synergy --- kinetics --- plastic waste --- animal manure --- cement decarbonization --- waste utilization --- co-pyro-gasification --- carbon conversions --- non-soot catalysts --- clean energy --- polymer --- rubber --- recycling --- cryoagent --- liquid nitrogen --- waste tire --- thermal conductivity --- post-consumer waste --- mechanical recycling --- polyethylene --- polypropylene --- contamination --- composition --- tensile properties --- impact properties --- compatibilisation --- polymer based post-consumer waste --- mechano-chemical treatment --- ball milling --- thiol-ene --- carbon nanotubes --- polysilicone --- functionalization --- flame retardancy --- dispersion --- epoxy resin --- silicone --- thermal degradation --- activation energy --- poly (l-lactic acid) --- poly (3-hydroxybutyrate-co-3-hydroxyvalerate) --- non-isothermal crystallisation kinetics --- circular economy --- circo-economics --- material circularity indicator --- packaging --- recycled opaque PET --- reactive extrusion --- chain extension --- long-chain branching --- polyethylene-modified bitumen --- wax-based additives --- rutting --- linear viscoelastic properties --- combustion --- automotive shredder residue --- solid recovered fuel --- alternative fuels --- sustainable energy --- waste-to-energy --- n/a


Book
Synthesis, Processing, Structure and Properties of Polymer Materials
Authors: ---
ISBN: 3036558977 3036558985 Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

The aim of this reprint is to highlight the progress and fundamental aspects for the synthesis, characterization, properties, and application of novel polymeric materials, as well as their copolymers, composites, and nanocomposites.

Keywords

Plastics & polymers technology --- poly(lactic acid) --- epoxidized natural rubber --- polymer blend --- natural additives --- antioxidant --- polymer blending --- radiation crosslinking --- polyethylene --- polyurethane --- heat resistance --- mechanical property --- aramid fiber --- ballistic test --- failure mechanism --- cyclotriphosphazane --- flame retardancy --- dielectric properties --- azo compound --- liquid crystal --- structure–property relationship --- axial behavior --- geopolymer concrete (GC) --- ferrocement --- finite element analysis (FEA) --- polyacrylonitrile --- lignin --- electrospinning --- selective chemical dissolution --- porous nanofibers --- nanofibers --- soft template --- peat soil --- cement --- stabilization --- fly ash --- polypropylene fiber --- unconfined compressive strength (UCS) --- California bearing ratio (CBR) --- scanning electron microscopy (SEM) --- bio-based polyurethanes --- jatropha oil --- algae oil --- recovered palm oil --- epoxy composite --- green composite --- corn cob --- polycarbonates --- transesterification --- polycondensation --- polymer --- hydrogen --- hydrophobic --- sensing --- nanostructures --- palladium --- polymer composite --- fibre-prestressing --- residual stresses --- PCL–SBA-15 nanocomposites --- real-time variable-temperature synchrotron measurements --- confinement --- mechanical behavior --- nanoclay --- nanocomposites --- mechanical properties --- impact properties --- hardness --- polymer composites --- graphene quantum dots --- bioactive --- biomedical --- synthesis --- PVK --- hexylthiophene --- PANI --- nanocomposite --- photovoltaic cells --- DFT --- polyhydroxyalkanoates --- fibers --- biodegradability --- packaging --- patents --- poly(aminopropyl/phenyl)silsesquioxane --- thiol-ene --- kinetics --- activation energy --- polymer characterization --- viscoelasticity --- DMA --- solution blow spinning --- polyethylene oxide --- morphology --- materials characterization --- polymer dissolution --- kaolin flocculation --- aggregate resistance --- salinity --- flocculation kinetic --- shear rate --- thermoplastic starch --- silane --- foam --- carbon dioxide --- microcapsules --- dip coating --- encapsulation --- spectroscopy --- microscopy --- antibacterial silver --- polyaniline --- dodecylbenzene sulfonic acid --- γ-Al2O3 --- in situ polymerization --- core–shell nanocomposite --- polyphosphazene --- micro-nanospheres --- species-absorbing mechanisms --- hydrophobicity --- thermochemical --- PVDF --- alkali-grafting --- α-methyl styrene --- acrylonitrile --- proton exchange membrane --- block copolymers --- random copolymers --- catalytic membranes --- esterification --- isopropyl acetate --- bioinspired bottlebrush polymers --- aqueous boundary lubrication --- friction --- wear resistance --- supramolecular hydrogel --- acrylic acid --- maleic anhydride --- terpyridine --- coordination interaction --- thermoplastic polyurethanes --- surface free energy --- dithiol --- differential scanning calorimetry --- optical properties --- arsine --- ligands --- polypropylene --- catalyst --- degradation --- sol-gel process --- 3D network hybrid materials --- nanoparticles --- nanodispersity --- ionic liquids --- n/a --- structure-property relationship --- PCL-SBA-15 nanocomposites --- core-shell nanocomposite

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