Surface chemical properties

State-of-the art research on conventional microwave substrates reveals limitations of restricted flexibility, poor adaptability to irregular surfaces, and reduced effectiveness in complex sensing environments, leading to the development of a flexible microwave substrate using Co–Ca ferrite for feasible applications in detecting industrial chemicals.

15p visergeyne 18-06-2024 0 0   Download

The article will be focused on methods of chemical modification of NR and the use of improved traditional fillers such as carbon black (CB) and silica. Modification reactions include epoxidation, hydrogenation, and grafting vinyl monomers onto NR molecules. Some methods of surface modification of NR film were also reviewed. Thanks to modification the NR degree of unsaturatiton is decrease that leads to its enhanced aging resistance.

15p dianmotminh02 03-05-2024 3 2   Download

Ebook "Insights into the adsorption behavior of a prototype functional molecule: A scanning tunneling microscopy study" main research interests are (1) the development of new materials with novel electronic, geometric and chemical properties, (2) the investigation of elementary steps of surface reactions and (3) the development and construction of advanced scientific apparatus. The investigations aim at a fundamental physical and chemical understanding of all mechanisms and processes involved, at an atomic level, and at the identification and evaluation of new preparation routes.

97p tudohanhtau1006 29-03-2024 2 1   Download

Ebook "Orthogonal supramolecular interaction motifs for functional monolayer architectures" describes a combination of orthogonal supramolecular interactions for the design of functional monolayer architectures on surfaces, that can be used as chemical and biosensors in a wide range of applications. The term “orthogonal supramolecular interactions” refers to non-covalent interactions that do not influence each other's assembly properties.

115p coduathanh1122 27-03-2024 1 1   Download

Part 1 book "Chemical engineering of polymers - Production of functional and flexible materials" includes content: Copolymerization of aniline P-phenylenediamine in an acetic acid medium; free radical frontal polymerization of acrylamide in the presence of nano and micro additives; influence of ph on the structuring of zetag 9014® type of cationic polymers; aromatic azides and pentazenes in multistep radical polymerization; synthesis and adsorption properties of 4 aminostyrene and methacrylic acid copolymer, immobilized in situ on silica surface;... and other contents.

237p muasambanhan09 16-03-2024 4 1   Download

Ebook "Novel optical nanoprobes for chemical and biological analysis" starts with a brief introduction to several kinds of versatile nanomaterials with novel optical properties, such as gold/silver nanoparticles, quantum dots, upconversion nanoparticles and graphene. It mainly focuses on the latest sensor design strategies, which apply the optical properties of nanomaterials to various detection techniques including colorimetry, fluorescence, and surface-enhanced Raman scattering (SERS).

105p nhanphanguyet 28-01-2024 2 2   Download

In ebook "Polymer reinforcement" we consider this class of polymeric materials but do not consider polymers filled with liquids (e.g., water) and polymeric foams. Filling or reinforcement of polymers to enhance some properties of the material is one of the most important and popular methods of production of plastics, rubbers, coatings, adhesives, etc., which must possess the necessary mechanical and physical properties for any given practical application.

413p loivantrinh 29-10-2023 3 2   Download

Impressive characteristics of carbon fiber paper (CFP) electrodes propound greater demand in electrochemical applications. CFP has a network structure composed of interwoven carbon fibers (CFs). The macroporous structure, chemical inertness, high conductivity, low cost, corrosion resistance, good electrical properties, mechanical strength, and self-standing capabilities have led to the large-scale acceptance of CFP.

19p viberbers 09-08-2023 9 3   Download

Graphene is a high crystalline material possessing the high electronic qualities. Doping of nitrogen in graphene is to tailor/control the electronic, chemical and structural properties of graphene by manipulating it through the means of doping such as its surface area and functional sites.

9p viberbers 09-08-2023 12 4   Download

X-ray photoelectron spectroscopy (XPS) is a well known tool in studying the physical and chemical properties of surface/interfaces which provides the element specific, non-destructive and quantitative information. In the present study, information about the surface chemical states of interfacial structure of CoFe thin films on n-Si substrates has been studied from XPS technique.

5p viberbers 09-08-2023 5 3   Download

The functionalized process refers to a new concept, which aims to modify the physical and chemical properties of the original surface for specific purposes.. The various applications might be named liquid repellent, anti-icing, anti-reflection, water harvesting, anti-biofouling, etc.

8p vispiderman 15-06-2023 8 2   Download

This work reports the surface modification of polyacrylonitrile (PAN) fibers by graft copolymerization to ensure the decoration of homogenous and dense Ag nanoparticles. Two facile and subsequent modification processes resulted in a PAN fiber composite with an intact fibrous structure, sufficiently conductive for antistatic application and antibacterial activity. In the first step, some chemically attractive monomers and monomer mixtures, such as acrylic acid (AA), AA-itaconic acid (AA-IA), AA-acrylamide (AA-AAm), were introduced to the fiber surface by grafting.

15p lyhuyenthu 31-01-2023 6 2   Download

Cellulose nanowhiskers (CWs) extracted from cotton fibers were successfully modified with distinct anhydrides structures and used as additives in poly(vinyl alcohol) (PVA) nanocomposite films. The surface modification of CWs was performed with maleic, succinic, acetic or phthalic anhydride to compare the interaction and action the carboxylic groups into PVA films and how these groups influence in mechanical properties of the nanocomposites.

10p vihermione 06-01-2023 12 2   Download

"Structural and electronic properties of silver-adsorbed silicene nanoribbons: A first-principles study" show that the bandgap doped Ag has been changed, which is the case for chemical adsorption on the surface of ASiNRs; this material became metallic with the peak of valance band contact fermi level, mean band gap 0 eV.

10p lieuyeuyeu18 23-12-2022 10 4   Download

"Structural and electronic properties of Praseodymium-adsorbed Amchair silicene nanoribbons: A first-principles study" applying first-principles calculations, the investigation of the geometrical and electronic properties of Pr adsorption armchair silicene nanoribbons structure has been established. The results show that the bandgap doped Pr has been changed, which is the case for chemical adsorption on the surface of ASiNRs; this material became metallic with the peak of valance band contact fermi level.

14p lieuyeuyeu18 23-12-2022 11 4   Download

Nanostructured silicon carbide possesses superior properties such as excellent hardness, high chemical stability, large surface area and good sintering ability at relatively low temperatures compared to bulk silicon carbide.

11p vironald 15-12-2022 3 2   Download

The adsorption of simple gases begins with the formation of a monolayer on the pristine surface, not always followed by the formation of a second or more monolayers. Subsequently, cluster formation or cavity filling occurs, depending on the properties of the surface.

11p vironald 15-12-2022 8 2   Download

Mixed-phased Inx Sey thin film containing InSe, In2 Se3 and In6 Se7 phases was prepared by M-CBD method and characterized by X-ray diffraction, AFM, optical spectroscopy and J-V measurements. Structural, optical and electrical conductance properties were modified by annealing the films at different temperatures. Optical and morphological properties were also investigated dependently on temperature and concentration of cationic precursor solution.

13p langthannam 29-12-2021 13 1   Download

This work reports the synthesis and properties of a new membrane based on polyvinyl chloride (PVC) grafting with polyacrylic acid (PAA) using argon (Ar) plasma. The membranes of PVC were synthesized by solutioncasting method, where PAA was deposited as an ultrathin film onto PVC using dielectric barrier discharge at atmospheric pressure with Ar gas. The surface characteristics and chemical composition of the modified membranes were analyzed by water contact angle, scanning electron microscopy, and Fourier transform infrared spectroscopy.

11p tudichquannguyet 29-11-2021 12 2   Download

In the present study, we successfully prepared two different electrospun polyacrylonitrile (PAN) based-activated carbon nanofiber (ACNF) composites by incorporation of well-distributed Fe2O3 and Co3O4 nanoparticles (NPs). The influence of metal oxide on the structural, morphological, and textural properties of final composites was thoroughly investigated. The results showed that the morphological and textural properties could be easily tuned by changing the metal oxide NPs.

13p tudichquannguyet 29-11-2021 6 1   Download