Materials Literature
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Purpose: This work was performed in the aim of exploring non-conventional injection moulding technique and to study the effect of processing thermomechanical treatment on the morphology and properties of polymerpolymer composites. Design/methodology/approach: Multilayered highly oriented skin regions induced by high s…
The effect of furfural benzoylhydrazone and its derivatives (I-VII) as corrosion inhibitors for C-steel in 1M phosphoric acid solution has been studied by weight-loss and galvanostatic polarization techniques. A significant decrease in the corrosion rate of C-steel was observed in the presence of the investigated inhi…
This experimental study mainly focuses on the effects of overfeed ratio, twist direction and amount of twist of the binder yarn, and the effect of yarn count on the properties of bouclé yarns and their performance in single jersey and rib (1 × 1) structures. Based on the results, it is evident that the twist direction…
A new magnetostriction sensor and an on-line liquid level and density measuring equipment were developed. The operating principle of the measuring equipment with magnetostrictive sensor was described and a multi-floater relative displacement algorithm based on Wiedemann and Viuary Effect was brought forward. The effec…
Novel MCM-41 aluminosilicate/aluminophosphate materials that exhibit good mesostructural ordering have been synthesized and characterised; the synthesis of these silicoaluminophosphates involved the use of gel mixtures containing amorphous mesoporous aluminosilicate and aluminophosphate phases as precursor.
FSM-16, a mesoporous silica, was found to catalyze oxidative photo-decarboxylation of alpha-hydroxy carboxylic acid, phenyl acetic acid derivatives and N-acyl-protected alpha-amino acids to afford the corresponding carbonyl compounds. Furthermore, FSM-16 proved to be re-usable by re-calcination at 450 degrees C after…
The process of obtaining alginate-chitosan fibres intended for medical applications was the subject of our investigations. Two methods of forming two-component alginate-chitosan fibres of the core-skin type (calcium alginate and chitosan respectively) were developed. The first method of forming fibres (A), which consi…
The valence state and the mesomorphic behaviour of a new cerium phthalocyanine double-decker complex bearing thioalkyl substituents are described and spectroscopic studies have revealed that the metal center in this lanthanide double-decker complex is tetravalent making the whole molecule neutral.
Degradation of porous low dielectric constant materials during their exposure in etch and strip plasmas is analyzed from point of view of surface chemistry and recombination of active radicals. Although the degree of damage during the etching can be significantly reduced, the damage in O2and H2based strip/cleaning pla…
New dissymmetrical neutral-cationic or anionic-cationic alpha,omega-diamido bolaamphiphiles have been synthesized in which the polar headgroups are derived from alginate and glycine betaine and which exhibit monolayer lipid membrane vesicles, large lamellae and rods.
History of structural ceramics study has been examined specifically proceeded in NGK. At the early time of the age, structural ceramics had been selected to aim the potential candidate material for the variety of heat engine to achieve the better fuel efficiency. Many kinds of the sciences and technologies had been in…
The physical properties of vitreous and amorphous silicon nanoparticles containing 300, 400, and 500 atoms are investigated by the molecular dynamics method. For a limited number of degrees of freedom, the internal energy of the amorphous phase is often less than the internal energy of the vitreous phase. The structur…
Solvothermal reactions of iron(II) acetate tetrahydrate and cobalt(II) acetate tetrahydrate with 1,2-dicyanobenzene in methanol solution result in the formation of racemic six-coordinate iron(III) and cobalt(III) complexes, respectively, with a new bicyclic pentadentate 14,28-[1,3-diiminoisoindolinato]phthalocyaninato…
Abstract Static first hyperpolarizabilities of vinylogue mono‐ and bimetallic sesquifulvalene chromophores, [(η 5 ‐C 5 H 5 )M{μ−(η 5 ‐C 5 H 4 )CHCH(η 6 ‐C 7 H 7 )}] + (M = Fe, Ru, and Os) and [(η 5 −C 5 H 5 )M{μ−(η 5 ‐C 5 H 4 )CHCH(η 6 ‐C 7 H 7 )}Cr(CO) 3 ] + (M = Fe, Ru, and Os) have been calculated within DFT theo…
Abstract Polyimide and hybrid polyimide‐siloxane were synthesized by polycondensation, imidization, and sol‐gel reaction. The polyimides were prepared from pyromellitic dianhydride (PMDA) and 4,4‐oxydianiline (ODA) in N ‐methyl‐2‐pyrollidone (NMP). Trimethoxyvinyl silane (TMVS) was used as a source of silica. Their su…
Thermodynamic modelling has been used to explain structural transformations during crystallization of amorphous Si-C-N polymer derived ceramics. Nanocrystalline SiC and nanocrystalline Si3N4 identified in ceramic microstructure have been regarded as metastable NASIC and NASIN phases of the Si-C-N system. Gibbs energie…
The ferroelectric properties in the liquid-crystalline smectic C* phase of the chiral mesogenic azobenzene (S)-4-(4-decyloxy-phenylazo)benzoic acid 4-(1-methylhexyloxy)-3-nitro-phenyl ester (‘W470’) were studied and found to be strongly dependent on the intensity of incident light. The light-induced trans to cis isome…
The influence of gas on phosphorus-doped ZnO thin films deposited by radio frequency magnetron sputtering was studied. As the partial pressure of increased in the sputtering gas, the structure of changed from nanorods to a smooth thin film. The electron concentration of the thin film was also decreased due to the redu…
Dispersion of the silicate nano-plates of clays within polymers for nanocomposite formation generally involved interactions of the polymers with the plate surfaces. In this paper, we provide preliminary evidence showing dependency of the dispersion on the interactions of the plate lattices with polymers. Experiments h…
Powder dielectric measurement of barium titanate (BaTiO3) fine particles from 17 to 1,000 nm revealed a maximum dielectric constant at a certain particle size. The sizes with maximum dielectric constants were strongly dependent on preparation methods. When BaTiO3 fine particles were prepared in vacuum of 10-2 torr, a…