Materials Literature
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In this study, we investigate the effect of decorating the grain boundaries of nanocrystalline undoped ceria on the electrical transport properties. For the decoration, different acceptors (Yb, Y, Bi) were chosen. On decoration, the conduction switches from electronic to ionic. Upon sintering the grains are characteri…
In this study, supercritical carbon dioxide (scCO2) was used as an alternative solvent for the synthesis and purification of poly(L-lactic acid) (PLLA) with a control on molecular weight. The synthesis of low molecular weight PLLA is desirable for applications such as drug delivery, resorbable implant applications and…
A super conductive (2334 S cm−1) single nanowire composed of PEDOT:BMIPF6 in acetonitrile was released between two gold electrodes and the characteristics of the nanowire were measured by scanning ion conductance microscopy and Raman spectroscopy and compared with those grown with PSSA as dopant precursor.
La2CaB10O19 powders doped with Eu3+ ions were synthesized using a citric route for the first time. The La2CaB10O19 powders doped with Eu3+ ions were synthesized using citric route for the first time. The crystal structure, morphology and chemical composition of the engineered compounds were characterized in details us…
This paper discusses the fabrication and characterization of electrospun nanofiber mats made up of poly(4-methyl-1-pentene) polymer. The polymer was electrospun in different weight concentrations. The mats were characterized by their basis weight, fiber diameter distribution, contact angles, contact angle hysteresis,…
Two novel three-dimensional (3D) extended vanadogermanate-based frameworks, [Co(pdn)(2)](3)[Co(2)(pdn)(4)][V(16)Ge(4)O(44)(OH)(2)(H(2)O)]·5H(2)O (1), [Co(2)(en)(3)][Co(en)(2)](2)[Co(en)(2)(H(2)O)][V(16)Ge(4)O(44)(OH)(2)(H(2)O)]·10.5H(2)O (2), (pdn = 1,2-propanediamine, en = ethylenediamine) have been synthesized under…
The presented work deals with synthesis and isolation of constitutional isomers of triazolo-fused azaphthalocyanines. Distribution of the isomers did not follow the statistical calculations due to steric effects of the substituents preferring the least sterically stressed C(4h) isomer.
The post-consumption carton packaging has been recycled using different process. Pyrolysis can be a promising technology to be used for recovering the aluminum from polyethylene and generating products with high heating value. In this research paper, a kinetic study on pyrolysis reactions was performed in order to est…
This paper presents efficient surface modification methodology to increase fire resistance properties of cotton by radio frequency (RF) plasma-induced graft copolymerization of vinyl phosphate ester as nanometer residue structure onto cotton surface. Methacryloyloxyethyl diphenyl phosphate (MEDP) monomer was synthesiz…
The intensity and colour of the light emitted from upconverting nanoparticles is controlled by the state of photoresponsive dithienylethene ligands decorated onto the surface of the nanoparticles. By selectively activating one or both ligands in a mixed, 3-component system, a multimodal read-out of the emitted light i…
A colorless polyurethane derivative bearing electron-rich alkynes substituted by the dialkylaniline donors at both sides was prepared by polyaddition between a diol monomer and tolylene-2,4-diisocyanate. Click chemistry-type postfunctionalization of this polyurethane was accomplished by a [2 + 2] cycloaddition followe…
The recrystallization behaviors of Fe–15Cr ODS ferritic steels underwent two different processing routes were compared; (a) 1st 70% cold rolling + intermediate annealing, (b) 1st 70% cold rolling + intermediate annealing at 1100°C to make a recrystallization structure +2nd 70% cold rolling + final annealing. Hardness…
Current-voltage measurement results on high voltage Ta capacitors with pre-polymerized intrinsically conductive polymer cathodes are reported in this paper. The Ta/Ta 2 O 5 /polymer capacitors exhibited relatively low leakage currents in the range of −50 to 125 V at room temperature. Typical leakage current at 125 V n…
Cellulose microfibril (CMF) was the extraction with acid mixture from peel of Musa sapientum Linn type of banana (Kluai Nam Wa). The fibrous-shape of CMF interconnected weblike structure with the average diameter 26 nm were observed by TEM. In order to prepare zein/CMF nanocomposite films, 16% wt zein solution was pre…
A generic ion-exchange mediated sol–gel method has been developed for the production of high purity nickel and other metal oxide nanopowders using sodium alginate precursor. X-Ray micro-tomography (XMT) shows that the nickel ions have been uniformly cross-linked in the alginate structure and remained stable after free…
A-b-(B-b-A)n-b-B multiblock copolymers composed of short middle diblock units (B-b-A)n and two long A- and B-outer blocks were successfully prepared. The multiblock copolymers consist of polystyrene (S) and poly(p-hydroxystyrene) (pHS) and were prepared through sequential anionic polymerization of styrene and 4-tert-b…
Large scale ZnS nanowire bundles and nanorod arrays have been successfully obtained by a facile solvothermal method at a mild temperature. The as-synthesized products were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), photoluminescence (PL) and water contact angle (CA) me…
The pH-responsive frictional behavior of layer-by-layer assembled poly(allylamine hydrochloride) and poly(acrylic acid) multilayers is quantified in different geometric forms of a continuous planar film and anisotropic tube forests. A mechanistic change from surface adhesion dominated frictional behavior to visco/poro…
In MgO nanocube powders surface excitons can separate and the resulting charge carriers provide reactive adsorption sites at well-defined surface elements. We employed photoluminescence (PL) emission bands originating from the photoexcitation of nanocube corners and edges as quantitative probes to explore their chemic…
The stability of self-assembling cyclic peptides (CPs) is attained by the intermolecular backbone-backbone hydrogen bonding (H-bonding) interactions. In addition to these H-bonding interactions, the self-assembled CPs are further stabilized by various intermolecular side chain-side chain interactions. This study inves…