Materials Literature
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In this article, blending of natural rubber with recycled ethylene-propylene-diene monomer (R-EPDM) was studied. The comparative studies of cure behaviors, mechanical properties and morphology of natural rubber/recycled ethylene-propylene-diene monomer (NR/R-EPDM) and natural rubber/ethylene-propylene-diene monomer bl…
A polarizable continnum model study and explicit solvation in water investigated through GPU-accelerated ab initio molecular dynamics followed by quantum-chemical calculations have been applied to the process of spiropyran to merocyanine isomerization of two spiropyran derivatives. It has been found that interaction w…
Exfoliated graphite nanoplatelets (xGnP)-filled impact-modified polypropylene (IMPP) composites were prepared at 2, 4, 6, and 8 wt % xGnP with and without the addition of a coupling agent and manufactured using melt mixing followed by injection molding. The coupling agent used in this study was polypropylene-graft-mal…
The theory to reconstruct the atomistic-level chain diffusion from the accelerated dynamics that is measured in mesoscale simulations of the coarse-grained system, is applied here to the dynamics of cis-1,4-polybutadiene melts where each chain is described as a soft interacting colloidal particle. The rescaling formal…
Liquid crystals (LCs), with their fluidity and self-organization, are attractive hosts for the dispersion and manipulation of macro- and nanoparticles, allowing the realization of their ordered assemblies. In addition, new functional materials can be created owing to the particle properties. Among the nanoparticles, c…
Pharmaceutical Packaging Handbook provides a complete overview of the role that packaging plays in the development and delivery of pharmaceuticals and medical devices. Supplying a thorough examination of the industry in size and scope, the book covers drug dosage forms, vaccines, biologically produced products, and me…
Microstructure, phase transitions, electrical conductivity, and optical and electrooptical properties of multiwalled carbon nanotubes (NTs), dispersed in the cholesteric liquid crystal (cholesteryl oleyl carbonate, COC), nematic 5CB and their mixtures, were studied in the temperature range between 255 K and 363 K. The…
Mg doped Pb0.3Sr0.7TiO3 (PST) thin films were fabricated by the sol–gel method on a Pt/Ti/SiO2/Si substrate. The microstructure, surface morphology, dielectric and tunable properties of PST thin films were investigated as a function of Mg concentration. It is found that proper Mg doping dramatically improves the diele…
Abstract A successful mechanochemical synthesis of strontium terephthalate trihydrate is described for the first time. The dehydration of Sr(C8H4O4)·3H2O occurs at about 100 °C and results in a well‐defined strontium terephtalate, Sr(C8H4O4), thermally stable up to 550 °C. Both compounds are not described so far in th…
Density functional theory calculations are carried out to model the structure and interpret recent X-ray photoelectron spectroscopy measurements of graphene oxide films obtained by Hummers oxidation of multilayer graphene grown epitaxially on silicon carbide. The confrontations between theory and experiment are used t…
Mixed-ligand hydride complexes OsHCl(CO)(PPh3)2L (2) [L = P(OMe)3, P(OEt)3] were prepared by allowing OsHCl(CO)(PPh3)3 (1) to react with an excess of phosphite P(OR)3 in refluxing toluene. Dichloro compounds OsCl2(CO)(PPh3)2L (3, 4) were also prepared by reacting 1, 2 with HCl. Treatment of hydrides OsHCl(CO)(PPh3)2L…
A series of vinyl ester (VE)/epoxy (EP) interpenetrating polymer networks (IPNs) were prepared by a simultaneous method. The change in characteristic groups, curing process, mechanical properties, damping properties, morphology, and thermal stability was studied. It was found that the damping ability, mechanical prope…
The novel hydrophobic luminescent copolymer P(Ir-TFEMA) was developed as an online dissolved-oxygen (DO) sensor. The phosphorescent moiety of cyclometalated iridium(III) complex exhibits red emission near 650 nm with a large Stokes shift of about 245 nm and minimal optical interference from the fermentation system. Th…
The aim of this work was the fundamental research on multifunctional properties of poly(p‐phenylene sulfide) composites using commercially available multiwall carbon nanotubes (MWNT) in combination with micro‐scale short carbon fibers (SCF) and graphite as fillers. Systematic combinations of the three fillers were inv…
A 2-D polymeric Ca(II) compound, [Ca(tza)2(H2O)2] n , was synthesized by the reaction of tetrazole-1-acetic acid with calcium carbonate. The product was characterized by X-ray single-crystal diffraction, elemental analysis, and IR spectroscopy. The calcium center is six-coordinate in a slightly distorted octahedral co…
We describe the synthesis and photophysical properties of a series of derivatives of pyrrolo[3,2-b]pyrrole-2,5(1H,4H)-dione-3,6-diyl (iDPP) linked to two oligothiophenes of variable length (nT). The iso-DPP-oligothiophenes (iDPPnTs) differ from the common pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione-3,6-diyl-oligothiophene…
Molecular origin of the well-known specific heat anomaly in supercooled liquid water is investigated here by using extensive computer simulations and theoretical analyses. A rather sharp increase in the values of isobaric specific heat with lowering temperature and the weak temperature dependence of isochoric specific…
Two polypropylene resins with approximate weight‐average and z‐average molecular weight but differing in low molecular weight tail content were used for the fabrication of microporous membrane based on melt‐stretching mechanism. The precursor film with row‐nucleated crystalline structure, annealed film and cold‐stretc…
A high performance Nd2Fe14B/Ta thin film Permanent Magnet (PM) not only has a high remnant flux density and a high coercive force similar to those of a conventional sintered Nd2Fe14B magnet, but also has a high heat tolerance. Using a thin film PM, we developed a moving-magnet typeMEMS linearmotor consisting of a sili…
We simulate crystallisation of hard spheres with short-ranged attractive potentials as a model self-assembling system. Using measurements of correlation and response functions, we develop a method whereby the interaction parameters between the particles are automatically tuned during the assembly process, in order to…