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Siloxane-Based Polymers

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ISBN: 9783038971252 / 9783038971269 Year: Pages: 188 DOI: 10.3390/books978-3-03897-126-9 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- Chemical Engineering
Added to DOAB on : 2019-08-28 11:21:27
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This book, a collection of 12 original contributions and 4 reviews, provides a selection of the most recent advances in the preparation, characterization, and applications of polymeric nanocomposites comprising nanoparticles. The concept of nanoparticle-reinforced polymers came about three decades ago, following the outstanding discovery of fullerenes and carbon nanotubes. One of the main ideas behind this approach is to improve the matrix mechanical performance. The nanoparticles exhibit higher specific surface area, surface energy, and density compared to microparticles and, hence, lower nanofiller concentrations are needed to attain properties comparable to, or even better than, those obtained by conventional microfiller loadings, which facilitates processing and minimizes the increase in composite weight. The addition of nanoparticles into different polymer matrices opens up an important research area in the field of composite materials. Moreover, many different types of inorganic nanoparticles, such as quantum dots, metal oxides, and ceramic and metallic nanoparticles, have been incorporated into polymers for their application in a wide range of fields, ranging from medicine to photovoltaics, packaging, and structural applications.

Keywords

fabrication --- multielectrode array (MEA) --- PDMS --- PDMS etching --- plateau-shaped electrode --- recessed electrode --- spinal cord signal recording --- underexposure --- organosilane --- quartz microcrystal --- encapsulant --- refractive index --- thermal conductivity --- poly(dimethylsiloxanes) --- surface modification --- nanosilica --- diethyl carbonate --- carbon content --- morphology --- coatings --- fillers --- hybrid hydrogel --- MAPOSS --- mechanical properties --- swelling --- drug release --- dental resin --- methacryl POSS --- shrinkage --- hardness --- scratch resistance --- ceramizable silicone rubber --- borate --- halloysite --- composite --- ceramizable mechanism --- polysiloxanes --- mortar --- basalt fibre --- roughness --- surface free energy --- poly(ethylene glycol) (PEG) --- hydrophilic --- non-releasable --- polydimethylsiloxane --- coatings --- cross-linking --- surface --- amphiphilic --- anti-bioadhesion --- hyperbranched poly(methylhydrosiloxanes) --- hydrolytic polycondensation --- 29Si-NMR --- topology of polysiloxane chains --- polyhedral oligomeric silsesquioxanes --- high molecular weight --- nanoparticles --- PDMS --- sugar templating process --- 3D porous network --- thermal stability --- TG-FTIR --- X-ray (Micro-CT) microtomography --- sol-gel --- hybrids --- chlorogenic acid --- bioactivity --- FTIR --- TG --- polysiloxanes --- theranostics --- drug delivery --- nanomedicine --- PDMS --- silicon --- ultraviolet (UV) curable coatings --- low surface energy materials --- fluorinated siloxane resin

Polymeric Materials: Surfaces, Interfaces and Bioapplications

Authors: --- --- --- --- et al.
ISBN: 9783038979623 / 9783038979630 Year: Pages: 342 DOI: 10.3390/books978-3-03897-963-0 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General)
Added to DOAB on : 2019-06-26 08:44:06
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This book collects the articles published in the Special Issue “Polymeric Materials: Surfaces, Interfaces and Bioapplications”. It shows the advances in polymeric materials, which have tremendous applications in agricultural films, food packaging, dental restoration, antimicrobial systems, and tissue engineering. These polymeric materials are presented as films, coatings, particles, fibers, hydrogels, or networks. The potential to modify and modulate their surfaces or their content by different techniques, such as click chemistry, ozonation, breath figures, wrinkle formation, or electrospray, are also explained, taking into account the relationship between the structure and properties in the final application. Moreover, new trends in the development of such materials are presented, using more environmental friendly and safe methods, which, at the same time, have a high impact on our society.

Keywords

corn stalk fiber --- friction composite --- friction and wear --- worn surface morphology --- antifouling coatings --- biofouling --- natural biofilms --- single-stranded conformation polymorphism --- polydimethylsiloxane --- multidimensional scale analysis --- antimicrobial coatings --- porous surfaces --- breath figures --- antimicrobial polymer --- coatings --- hydrogel --- protein-repellent polymer --- surface-attached polymer network --- polymer cross-linking --- alginate modification --- calcium chloride --- microparticles --- spray drying --- prolonged drug release --- gradient wrinkles --- UV/ozone --- irradiance --- polymeric composites --- bonding agents --- antibacterial --- oral biofilms --- periodontal pathogens --- caries inhibition --- recycling --- polypropylene --- biodegradable polymers --- degradation --- inmiscibility --- hemicelluloses --- chitosan --- composite films --- oxygen barrier property --- food packaging --- nanosecond laser surface modification --- ABS (Acrylonitrile-Butadiene-Styrene) --- surface wettability --- superhydrophobic --- superhydrophilic --- poly(x-chlorostyrene) --- honeycomb --- breath figures --- conformational entropy --- spinal anatomy --- intervertebral disc --- degenerative disc disease --- herniated disc --- spinal fusion --- total disc replacement --- tissue engineering --- Electrically conductive polymers --- Electroactive biomaterials --- Electrical stimulation --- Smart composites --- Bioelectric effect --- Drug delivery --- Artificial muscle --- bio-based --- fossil --- hybrids --- blends --- packaging --- bio-based polymers --- antimicrobial --- biodegradable --- sustainable --- eco-friendly --- graphene oxide --- chitosan --- composites --- scaffolds --- tissue engineering --- surface modification/functionalization --- surface segregation --- micro- and nanopatterned films --- blends and (nano)composites --- coatings --- surface wettability --- stimuli-responsive materials/smart surfaces --- bioapplications

Advanced Glasses, Composites and Ceramics for High Growth Industries

Authors: --- ---
ISBN: 9783038979609 / 9783038979616 Year: Pages: 186 DOI: 10.3390/books978-3-03897-961-6 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering --- Materials
Added to DOAB on : 2019-06-26 08:44:06
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Advanced Glasses, Composites and Ceramics for High-Growth Industries (CoACH) was a European Training Network (ETN) project (http://www.coach-etn.eu/) funded by the Horizon 2020 program. CoACH involved multiple actors in the innovation ecosystem for advanced materials, composed of five universities and ten enterprises in seven different European countries. The project studied the next generation of materials that could bring innovation in the healthcare, construction, and energy sectors, among others, from new bioactive glasses for bone implants to eco-friendly cements and new environmentally friendly thermoelectrics for energy conversion. The novel materials developed in the CoACH project pave the way for innovative products, improved cost competitiveness, and positive environmental impact. The present Special Issue contains 14 papers resulting from the CoACH project, showcasing the breadth of materials and processes developed during the project.

Thin Films for Energy Harvesting, Conversion, and Storage

Authors: --- ---
ISBN: 9783039217243 / 9783039217250 Year: Pages: 174 DOI: 10.3390/books978-3-03921-725-0 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- Chemical Engineering
Added to DOAB on : 2019-12-09 11:49:16
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Efficient clean energy harvesting, conversion, and storage technologies are of immense importance for the sustainable development of human society. To this end, scientists have made significant advances in recent years regarding new materials and devices for improving the energy conversion efficiency for photovoltaics, thermoelectric generation, photoelectrochemical/electrolytic hydrogen generation, and rechargeable metal ion batteries. The aim of this Special Issue is to provide a platform for research scientists and engineers in these areas to demonstrate and exchange their latest research findings. This thematic topic undoubtedly represents an extremely important technological direction, covering materials processing, characterization, simulation, and performance evaluation of thin films used in energy harvesting, conversion, and storage.

Micro/Nano Devices for Blood Analysis

Authors: --- ---
ISBN: 9783039218240 / 9783039218257 Year: Pages: 174 DOI: 10.3390/books978-3-03921-825-7 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General)
Added to DOAB on : 2020-01-07 09:08:26
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The development of micro- and nanodevices for blood analysis is an interdisciplinary subject that demands the integration of several research fields, such as biotechnology, medicine, chemistry, informatics, optics, electronics, mechanics, and micro/nanotechnologies. Over the last few decades, there has been a notably fast development in the miniaturization of mechanical microdevices, later known as microelectromechanical systems (MEMS), which combine electrical and mechanical components at a microscale level. The integration of microflow and optical components in MEMS microdevices, as well as the development of micropumps and microvalves, have promoted the interest of several research fields dealing with fluid flow and transport phenomena happening in microscale devices. Microfluidic systems have many advantages over their macroscale counterparts, offering the ability to work with small sample volumes, providing good manipulation and control of samples, decreasing reaction times, and allowing parallel operations in one single step. As a consequence, microdevices offer great potential for the development of portable and point-of-care diagnostic devices, particularly for blood analysis. Moreover, the recent progress in nanotechnology has contributed to its increasing popularity, and has expanded the areas of application of microfluidic devices, including in the manipulation and analysis of flows on the scale of DNA, proteins, and nanoparticles (nanoflows). In this Special Issue, we invited contributions (original research papers, review articles, and brief communications) that focus on the latest advances and challenges in micro- and nanodevices for diagnostics and blood analysis, micro- and nanofluidics, technologies for flow visualization, MEMS, biochips, and lab-on-a-chip devices and their application to research and industry. We hope to provide an opportunity to the engineering and biomedical community to exchange knowledge and information and to bring together researchers who are interested in the general field of MEMS and micro/nanofluidics and, especially, in its applications to biomedical areas.

Graphene and Other 2D Layered Nanomaterial-Based Films: Synthesis, Properties and Applications

Authors: ---
ISBN: 9783039219025 / 9783039219032 Year: Pages: 138 DOI: 10.3390/books978-3-03921-903-2 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Chemistry (General) --- Organic Chemistry
Added to DOAB on : 2020-01-07 09:08:26
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This book is dedicated to highlighting some relevant advances in the field of thin films and coatings based on two-dimensional crystals and layered nanomaterials. Due to their layered structure, graphene and a variety of new 2D inorganic nanosystems, called “graphene analogues”, have all attracted tremendous interest due to their unprecedented properties/superior performance, and may find applications in many fields from electronics to biotechnology. These two-dimensional systems are ultrathin and, hence, tend to be flexible, also presenting distinctive and nearly intrinsic characteristics, including electronic, magnetic, optical, thermal conductivity, and superconducting properties. Furthermore, the combination of different structures and synergetic effects may open new and unprecedented perspectives, making these ideal advanced materials for multifunctional assembled systems. As far as the field of coatings is concerned, new layered nanostructures may offer unique and multifunctional properties, including gas barrier, lubricant, conductive, magnetic, photoactive, self-cleaning, and/or antimicrobial surfaces. This book contains new findings on the synthesis and perspectives of multifunctional films that are at the forefront of the science and coating technologies.

Structure and Mechanical Properties of Transition Group Metals, Alloys, and Intermetallic Compounds

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ISBN: 9783039211463 / 9783039211470 Year: Pages: 222 DOI: 10.3390/books978-3-03921-147-0 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering --- Materials
Added to DOAB on : 2019-08-28 11:21:27
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The aim of this Special Issue is to present the latest theoretical and experimental achievements concerning the mechanisms of microstructural change in metallic materials subject to different processing methods, and their effect on mechanical properties. It is my pleasure to present a series of compelling scientific papers written by scientists from the community of transition group metals, alloys, and intermetallic compounds.

Keywords

metal matrix composites --- laser metal deposition --- Inconel 625 --- additive manufacturing --- laser processing --- metal matrix composites --- Z-pin reinforcement --- delamination --- carbon fiber --- strengthening mechanisms --- severe plastic deformation (SPD) --- cross-channel extrusion (CCE) --- back pressure (BP) --- numerical simulation (FEM) --- physical modeling technique (PMT) --- metal–matrix composites (MMCs) --- carbon fiber --- mechanical properties --- z-pin reinforcement --- laminate --- titanium alloys --- high pressure torsion --- microhardness --- Cu–Ag alloy --- high-pressure torsion --- ultrafine microstructure --- phase dissolution --- microhardness --- friction stir welding --- heat treatment --- AA2519 --- microstructure --- fatigue --- fractography --- AZ91 --- magnesium alloys --- creep --- high pressure die casting --- additive manufacturing --- Ti-6Al-4V --- LENS --- mechanical characterization --- twin roll casting --- magnesium alloy --- calcium --- Mg-Zn-Al-Ca alloy --- texture --- flow curve --- processing map --- honeycomb structure --- additive manufacturing --- laser engineered net shaping --- LENS --- Ti6Al4V alloy --- energy absorption --- dynamic tests --- solidification thermal parameters --- Cu-Al-Ni-Fe bronze alloys --- hardness --- microhardness --- specific intermetallics --- MAX phase --- Ti3SiC2 --- composite --- high energy ball milling --- spark plasma sintering --- structure --- mechanical properties --- deformation behavior --- tribaloy-type alloy --- CoCrMoSi alloy coatings --- T-800 alloy --- Laves phase --- Laser Engineered Net Shaping (LENSTM) --- electron microscopy (in situ SEM) --- delamination --- metal matrix composites (MMCs) --- z-pinning

Sol-Gel Chemistry Applied to Materials Science

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ISBN: 9783039213535 / 9783039213542 Year: Pages: 216 DOI: 10.3390/books978-3-03921-354-2 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Chemistry (General)
Added to DOAB on : 2019-12-09 11:49:15
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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

Keywords

sol-gel method --- Fourier transform infrared spectroscopy (FTIR) analysis --- bioactivity --- biocompatibility --- sol–gel method --- organic-inorganic hybrids --- chlorogenic acid --- cytotoxicity --- biocompatibility --- silsesquioxanes --- thiol-ene click reaction --- in situ water production --- hydrophobic coatings --- cotton fabric --- paper --- NMR --- wettability --- sol-gel --- hollow sphere --- 1D structure --- sol-gel --- thin-disk laser --- Yb-doped glasses --- aluminosilicate glasses --- photoluminescence --- ultrasonic spray deposition --- tungsten oxide --- lithium lanthanum titanium oxide --- conformal coating --- Li-ion batteries --- sol-gel technique --- biomaterials --- cell proliferation --- cell cycle --- one transistor and one resistor (1T1R) --- organic thin-film transistor (OTFT) --- resistive random access memory (RRAM) --- sol-gel --- lithium-ion battery --- LiMnxFe(1?x)PO4 --- carbon coating --- pseudo-diffusion coefficient --- potential step voltammetry --- electrochemical impedance spectroscopy --- sol-gel --- oxyfluoride glass-ceramics --- nanocrystal --- optical properties --- sol-gel method --- SiO2–based hybrids --- poly(?-caprolactone) --- TG-DSC --- TG-FTIR --- X-ray diffraction analysis --- computer-aided design (CAD) --- mechanical analysis --- finite element analysis (FEA) --- composites --- organic–inorganic hybrid materials --- biomedical applications --- metal oxides --- multi-layer --- surface plasmon resonance --- optical sensors --- computer-aided design (CAD) --- mechanical analysis --- finite element analysis (FEA) --- composites --- hybrid materials --- biomedical applications

Polymer Clay Nano-composites

Author:
ISBN: 9783039216529 / 9783039216536 Year: Pages: 246 DOI: 10.3390/books978-3-03921-653-6 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology
Added to DOAB on : 2019-12-09 11:49:16
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This Special Issue focuses on the current state-of-the-art of “Polymer Clay Nano-Composites” for biomedical, anticorrosion, antibacterial, and other applications. Clay–polymer composite nanomaterials represent an emerging area of research. Loading polymers with clay particles essentially enhances the composite strength features. Of particular interest are different nano-assembly methods, such as silane mono and multilayers, polyelectrolyte layer-by-layer assembly, and others. An important development was reached for tubular and fibrous clay nanoparticles, such as halloysite, sepiolite, and imogolite. Polymer clay nanoparticles can be prepared as sheets with 1-nm thickness and width of a few hundred nm (e.g., kaolin and montmorillonite). Fibrous clays significantly reinforce the nano-composites in the assembly with biopolymers and other green polymers, leading to functional hybrid bio nano-composites. The scope of this Special Issue comprehensively includes the synthesis and characterization of polymer clay nano-composites used for several applications, including nano-clay polymer composites and hybrid nano-assemblies.

Keywords

polyimide --- graphene oxide --- composite --- mechanical properties --- indentation recovery --- AFM --- carbon fibers --- surface grafting --- halloysite nanotubes --- polymer composites --- interface --- fish gelatin --- halloysite nanotubes --- glycerol --- mechanical properties --- water resistance --- LAP --- hyaluronic acid --- doxorubicin --- CD44 receptor targeted --- sacrificial bond --- ionic network --- organic montmorillonite --- 1,2-polybutadiene --- in-situ intercalation --- clay–polymer nanocomposites --- atrazine --- radical polymerization --- hexadecyltrimethylammonium bromide --- phenyltrimethylammonium chloride --- FTIR --- TGA --- adsorption --- dental resins --- nanocomposite materials --- organically modified clays --- montmorillonite --- intercalation --- nanotechnology --- ammonium persulfate --- fuzzy optimization --- N,N?-methylenebisacrylamide --- Pareto set --- polyacrylic acid --- swelling capacity --- variable cost --- polyethylene oxide --- montmorillonite clays --- Pd catalysis --- catalytic composite --- positron annihilation --- doubly functionalized montmorillonite --- polystyrene --- soap-free emulsion polymerization --- thermal stability --- tribological property --- organo-clays --- polyamines --- clay-amine interaction mechanisms --- structure effects --- la uptake and release --- layered silicate --- sericite --- CTAB --- intercalation stability --- nanocomposites --- gelation kinetics --- sol–gel transition --- water shutoff --- silica sol --- cellulose nanofibrils --- halloysite nanotubes --- supercritical CO2 --- polystyrene foam --- blowing agent --- in situ polymerization --- attapulgite/polypyrrole nanocomposite --- halloysite nanotubes --- polysaccharide --- interfacial interactions --- reinforcing --- adsorption --- dispersion --- coatings --- whey protein isolate --- nanocomposites --- nanoclay, barrier --- morphology --- n/a

Processing-Structure-Property Relationships in Metals

Authors: ---
ISBN: 9783039217700 / 9783039217717 Year: Pages: 240 DOI: 10.3390/books978-3-03921-771-7 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-12-09 16:39:37
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In the industrial manufacturing of metals, the achievement of products featuring desired characteristics always requires the control of process parameters in order to obtain a suitable microstructure. The strict relationship among process parameters, microstructure, and mechanical properties is a matter of interest in different areas, such as foundry, plastic forming, sintering, welding, etc., and regards both well-established and innovative processes. Nowadays, circular economy and sustainable technological development are dominant paradigms and impose an optimized use of resources, a lower energetic impact of industrial processes and new tasks for materials and products. In this frame, this Special Issue covers a broad range of research works and contains research and review papers.

Keywords

titanium composites --- in situ secondary phases --- microstructure --- inductive hot pressing --- intermetallic --- bainite rail --- tempering --- retained austenite --- tensile property --- impact toughness --- cryorolling --- reduction --- ultrafine grain --- secondary recrystallization --- high strength --- microstructure inhomogeneity --- non-monotonic simple shear strains --- shear strain reversal --- severe plastic deformation --- texture inhomogeneity --- tensile properties --- Mg-10Y-6Gd-1.5Zn-0.5Zr --- ultra-fine grain --- aging treatment --- precipitation behavior --- mechanical property --- multimodal --- AZ91 alloy --- equal channel angular pressing --- aging --- high pressure die casting --- aluminum alloy --- prediction model --- process monitoring --- static mechanical behavior --- fracture surface --- microstructure. --- casting --- Al 6061 alloys --- shrinkage --- porosity --- steering knuckles --- Al alloys --- warm working --- mechanical properties --- dental materials --- metal posts --- computer-aided design (CAD) --- image analysis --- mechanical properties --- finite element analysis --- additive manufacturing --- Al alloys --- wear --- cavitation erosion --- SEM --- microstructure --- high speed steel --- nanostructured coatings --- thin films --- FEGSEM --- tribology --- Nb tube --- caliber-rolling --- grain boundaries --- texture --- electron backscatter diffraction --- damping --- aluminum film --- grain boundary --- anelasticity --- thin aluminum sheet --- alloys --- aeronautic applications --- mechanical properties --- corrosion resistance --- EBM --- SEBM --- macro-instrumented indentation test --- property-microstructure-process relationship --- mechanical properties --- indentation hardness --- indentation modulus --- tensile properties --- Ti-6Al-4V alloy --- ?-platelet thickness --- columnar microstructure --- n/a

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