Materials Literature
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Abstract Poly(vinyl chloride)/layered double hydroxides (PVC/LDHs) composite resins were prepared by in situ suspension polymerization of vinyl chloride monomer in the presence of LDHs intercalated with dodecyl sulfate anions (LDH‐DS), and were further processed to obtain PVC/LDH‐DS nanocomposites. It was found that t…
Auf Draht: PtII⋅⋅⋅PtII-Wechselwirkungen sind die kohäsive Triebkraft für die Bildung von mikro- und nanometerskaligen lumineszierenden Drähten, z. B. von Nanodrähten aus [Pt(CNtBu)2(CN)2] (siehe Bild; Pt pink, N blau, C grau), einem potenziellen Kandidaten für Anwendungen in nanooptischen, elektronischen und Sensorfun…
The lone (ar)ranger: The structure of Cu20Sb35O44Cl37 is divided up into two parts: ionically bonded Cu+–Cl− supertetrahedra (green) and covalently bonded clusters that resemble zeolite β cages. The Sb3+ ions (gray) lie at the vertices of the cages, while their lone pairs of electrons form surfaces that separate the c…
Abstract PP was endowed with excellent flame retardant properties by great mount of Mg(OH) 2 particulates. It was found that the mechanical properties of PP was severely deteriorated, caused by the bad compatibility between filler and matrix, as well as the agglomerate of Mg(OH) 2 particles in PP matrix. The addition…
Abstract Poly(trimethylene terephthalate) (PTT) and cationic dyeable poly(trimethylene terephthalate) (CD‐PTT) were extruded (in the proportions of 80:20, 60:40, 40:60, and 20:80) from one melt twin‐screw extruder to prepare four PTT/CD‐PTT polyblended fibers. The molar ratio of 5‐sodium sulfonate dimethyl isophthalat…
Abstract Thermal degradation mechanism and mechanical properties of poly(vinyl chloride) (PVC) in PVC–polyethylene (PE) mixtures with varying types, contents, and melt flow indexes of the PE were studied. The degradation behavior was investigated in terms of decomposition temperature and glass transition temperature,…
Ti-4.5Al-6.0Mo-1.5Fe, Ti-6Al-1Mo-1Fe and Ti-6Al-4V alloys were prepared by blended elemental powder metallurgy (PM) process, and the effects of Nd on the microstructures and mechanical properties were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD)…
Abstract Two organically modified layered silicates (with small and large diameters) were incorporated into three segmented polyurethanes with various degrees of microphase separation. Microphase separation increased with the molecular weight of the poly(hexamethylene oxide) soft segment. The molecular weight of the s…
Probing QD stablility: A convenient solvent-evaporation approach to prepare water-soluble, biocompatible CdSe/ZnS (core/shell) quantum dots (QDs, see figure) is reported. The QDs are modified with a surfactant and polyamidoamine molecules that possess an ester terminal group. This method avoids complicated multistep l…
Abstract The effects of processing parameters on the strength of the fusion bonding interface have been investigated. The interface was generated when an isotactic polypropylene homopolymer was injection molded on a solid self‐reinforced polypropylene substrate. The interface strength was measured in shear configurati…
Abstract Several different gelation assessment methods such as differential scanning calorimetry, capillary rheometry, solvent absorption, wide angle x‐ray scattering, transmission electron microscopy, and atomic force microscopy were applied to a typical PVC window profile formulation subjected to various thermomecha…
Abstract Poly(ethylene‐vinyl acetate) (EVA) copolymer was melt grafted with maleic anhydride (MAH) in a twin screw extruder in the presence of peroxide. It is confirmed that MAH has been melt grafted on the backbone of EVA by FTIR using the method of hydrolysis. The NMR analysis suggests that the grafting reaction occ…
Abstract Combined effects of clay treatment and compatibilizer polymers on the structure and properties of polypropylene/clay nanocomposites were studied. Dynamic mechanical analysis was used to analyze comparatively the dynamic mechanical response of different nanocomposites prepared from polypropylene and montmorill…
Abstract In this investigation, attempts are made to modify a high‐performance polymer such as polybenzimidazole (PBI) (service temperature ranges from −260°C to +400°C) through high‐energy radiation and low‐pressure plasma to prepare composite with the same polymer. The PBI composites are prepared using an ultrahigh…
Abstract Crosslinked chitosan and chitosan/poly(ethylene oxide) (PEO) blend membranes were prepared using the solution casting technique for eleutherococcus sentisocus (ES) and vitamin B 12 release. A naturally occurring and nontoxic crosslinking agent, genipin, was used to form the chitosan and chitosan/PEO blend net…
Abstract This work investigates the resistance against marine corrosion of an epoxy‐based coating modified by the addition of electrochemically produced and oxidized poly(3,4‐ethylenedioxythiophene) (PEDOT). For this purpose, electrodeposition of PEDOT was performed on steel electrodes by electrochemical polymerizatio…
Abstract In this study, melamine cyanurate (MCA)/melamine phosphate (MP) composite flame retardants were synthesized in the solution of phosphoric acid/polyamide 6 (PA6). Phosphoric acid acted as the solvent of PA6, catalyst of melamine‐cyanurate self‐assembly reaction and reactant of melamine‐phosphoric acid reaction…
Abstract Textile biocomposites were prepared by reinforcing natural rubber with woven sisal fabric. Sisal fabric was subjected to various chemical modifications like mercerization, silanization, and thermal treatment. The moisture uptake of the textile composites was found to depend upon fiber content as well as archi…
Thanks a bundle! A strong photoresponse for macroscopic bundles containing thousands of aligned carbon nanotubes (suspended between two electrodes, see figure) upon illumination is observed at wavelengths ranging from the visible to the far-infrared. At a relatively small applied bias, the current flow in the nanotube…
Potassium neodymium molybdenum oxide, KNd(MoO 4 ) 2, has been synthesized by the solid-state method. The structure and microstructure have been studied by X-ray powder diffraction and transmission electron microscopy (TEM). TEM revealed that the KNd(MoO 4 ) 2 structure is incommensurately modulated. The scheelite-like…