Materials Literature
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Abstract To mix single‐walled carbon nanotubes (SWCNTs) with a polymer and to achieve low percolation thresholds, a low‐viscosity liquid has been required in order to achieve sufficiently good dispersion. In this article, data are presented which show that percolation occurs at ∼0.14 wt % carbon nanotubes and the disp…
In this paper, we described a simple approach for aqueous synthesis of highly luminescent ZnSe(S) alloyed quantum dots (QDs) in the presence of 3-mercaptopropionic acid as stabilizers using zinc chloride and NaHSe as precursors. The synthesis conditions were systematically investigated. We observed that the pH value o…
Abstract In this work, composites based on a phenolic matrix and untreated‐ and treated sisal fibers were prepared. The treated sisal fibers used were those reacted with NaOH 2% solution and esterified using benzophenonetetracarboxylic dianhydride (BTDA). These treated fibers were modified with the objective of improv…
Abstract Rubidium melonate trihydrate Rb 3 [C 6 N 7 (NCN) 3 ]·3H 2 O and cesium melonate trihydrate Cs 3 [C 6 N 7 (NCN) 3 ]·3H 2 O were obtained by ion exchange reactions in aqueous solution. The structure of the cesium salt was determined by single‐crystal X‐ray diffraction ( Pna 2 1 , a = 687.34(14), b = 2196.5(4),…
Polyhydroxybutyrate (PHB) synthases catalyze the conversion of 3-hydroxybutyryl coenzyme A (HBCoA) to PHB with a molecular mass of 1.5 MDa. The class III synthase from Allochromatium vinosum is a tetramer of PhaEPhaC (each 40 kDa). The polymerization involves covalent catalysis using C149 of PhaC with one PHB chain pe…
With the use of the tailored tricyanometalate precursors [(L)Fe(CN)(3)](-) (L = Tp, tris(pyrazolyl)hydroborate; L = i-BuTp, 2-methylpropyltris(pyrazolyl)borate) and terephthalate (ta) units as the mixed bridging ligands, a new one-dimensional (1D) chain polymer {[(Tp)(2)Fe(2)(CN)(6)Cu(2)(ta)(dmbpy)(2)] x 7 H(2)O}(n) (…
A series of functionalized liquid-crystalline polymer materials with different degrees of functionality was synthesized by a post Sonogashira cross-coupling reaction of a polymer precursor. The post-functionalization was carried out under mild conditions and showed a high yield. Although a highly birefringent azotolan…
We report the template assembly of luminescent poly-3-hydroxybutyrate (PHB) particles doped with rare-earth complexes. The hydrophobic polymer, PHB, has been infiltrated into the nanopores of mesoporous silica (MS) particles in organic solvent. Because of the van der Waals interaction of the polymer chains, PHB loaded…
Abstract Results of an investigation into an unmodified‐montmorillonite (MMT)‐filled nanocomposite based on plasticized starch are reported. Data on the influence of MMT content on the tensile mechanical properties of the material are presented. Particular attention is given to the water vapor permeability of the nano…
Abstract Polyaniline (PANI)/silver (Ag) nanocomposites containing PANI nanofibers decorated with well‐dispersed Ag nanoparticles were obtained with interfacial polymerization. It was interesting that silver nitride affected not only the diameter and crystallinity of the PANI nanofibers but also their room‐temperature…
In the present paper we report the key results of a comprehensive computational study aimed at investigating the dependence of the singlet-triplet energy gap in phenyl-bridged bis-nitroxide diradicals, on the basis set and on soft structural parameters like torsion and pyramidalization. We have compared the BS-DFT tec…
New polyhedral oligomeric silsesquioxanes (POSS), ( i BuSi) 7 O 12 SiOSi(Me) 2 CH 2 (CH 2 ) n CH 2 OC(O)C(CH 3 )═CH 2 bearing one single methacrylate group, were synthesized by hydrosilylation of allylalcohol or 4-penten-1-ol, followed by acylation with methacryloyl chloride. All intermediates and final derivatives we…
Abstract A series of polymer‐clay nanocomposite (PCN) materials, consisting of thermoplastic polystyrene (PS) sample and dispersing inorganic organoclay platelets, were successfully prepared. First, organoclay was prepared by performing cationic exchange reactions between the sodium ions existing in the interlayer reg…
Hydrogenation reactions of three polycyclic arenes (PCAs), that is, anthracene, 9-phenylanthracene (PA), and 9,10-diphenylanthracene (DPA) were carried out under an initial hydrogen pressure of 5 MPa at 300 °C. An activated carbon (AC, a metal-free catalyst), was employed to catalyze the PCA hydroconversions. The resu…
Abstract Epoxidized natural rubber–alumina nanoparticle composites were prepared by melt compounding with an internal mixer for a constant filler loading of 10 phr. Mixer parameters such as the mixing temperature, mixing time, and rotor speed were screened and optimized with response surface methodology to maximize th…
within the 3 rd exon leads to FS with occurrence of a stop codon at position 156. In such cases where FS occurs proximal within the sequence, helix H is drastically altered by incorporation of several hydrophobic residues (six Leu, two Ile, four Trp), leading to dominant thalassemia syndrome. 8 When the deletion is lo…
Abstract Nonwoven fiber mats composed of poly(phenylene ether) (PPE) and polystyrene (PS) blends were prepared by electrospinning of PPE/PS solutions in a mixture of chloroform and hexafluoroisopropanol. The blends showed higher electrospinnability and led to thinner fibers (200 nm–1.3 μm) than the pure components, be…
The modulation of atomic positions in CaCu(x)Mn(7-x)O12 (x = 0 and 0.1) was studied using synchrotron radiation powder diffraction below 250 and 220 K, respectively. The copper-rich member CaCu(x)Mn(7-x)O12 (x = 0.23) does not show any modulation of the atomic positions at temperatures as low as 10 K. Using low-temper…
The purpose of this study was to develop a system to utilize the successful experiences and help the beginners of garment pattern design (GPD) through optimization methods. Size design of fit garments is a basic and difficult problem in GPD for inexperienced designers. We have proposed a hybrid system (NN-ICEA) based…
In Murata vortex spinning (MVS), the principle of yarn formation is closely related to the flow field inside the nozzle. This paper presents a numerical simulation of the flow characteristics inside the nozzle of the MVS machine. A three-dimensional grid and the realizable k-ε turbulence model are used in this simulat…