Materials Literature
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Here, we described the in vitro biocompatibility of a novel nanostructured surface composed of PTFE as a potential polymer for the prevention of adverse host reactions to implanted devices. The foreign body response is characterized at the tissue-material interface by several layers of macrophages and large multinucle…
High Resolution Image Download MS PowerPoint Slide Amorphous carbon nanotube brushes were prepared by a simple method using glucose as the carbon precursor. The functional surfaces of these nanotubes were covered with gallium ions and then calcined to get gallium oxide nanotube brushes. The gallium oxide nanotube brus…
Ambiguities present in space-group construction from the Hermann-Mauguin (H-M) symbols enforce the use of other space-group designations or H-M symbol modifications. Therefore, a transformational space-group symbol (TSG) composed of the well defined standard space-group identifier, an axis-system transformation and or…
In Vitro and in Vivo Antilithiasic Effect of Saponin Rich Fraction Isolated From Herniaria hirsuta Descritores: Nefrolitiase. Oxalato de calcio. Cristalizacao. Herniaria hirsuta. Saponinas. Efeito Anti-litiasico, In vitro e In Vivo, da Fracao Rica em Saponinas Extraida da Herniaria hirsuta
Abstract This paper deals with the evaluation of the sorption‐induced release of an antimicrobial component, i.e., isopropanol, from two ethylene‐vinyl alcohol (EVOH) copolymers as measured by ATR‐FTIR spectroscopy. Three different swelling agents were considered namely, water, methanol, and ethanol, whose kinetics of…
Abstract The influence of annealing conditions on the fracture behavior of poly(propylene‐ block ‐ethylene) sheets was investigated by means of the essential work of fracture method, and was complemented by the study of the effect of annealing on crystal structure, using differential scanning calorimetry. It was shown…
Dimethyl-3,3a,3b,4,6a,7a-hexahydro-3,4,7-metheno-7H-cyclopenta[a]pentalene-7,8-dicarboxylate (3, a 9,10-dihydrofulvalene pincer cycloadduct) was found to be a versatile building block for the synthesis of polynorbornyl scaffolds containing various end functionalities such as porphyrins, pyrimidine, and the phenanthrol…
Abstract Nanocomposites of bentonite with polyaniline (PANI), poly(methacrylic acid) (PMAA), and poly(aniline‐ co ‐methacrylic acid) (PANI‐ co ‐PMAA) were prepared by in situ intercalative polymerization technique. The nanocomposites were characterized by FTIR and UV–visible spectroscopies, XRD, SEM, TEM, as well as T…
Abstract The row‐nucleated lamellar crystalline structure of high‐density polyethylene (HDPE) films was prepared by applying elongation stress to HDPE melt during T‐die cast film extrusion and subsequently annealing the extruded films. This unusual crystalline structure was analyzed in terms of lamellar crystalline or…
Abstract Structure and mechanical properties for binary blends composed of a poly(3‐hydroxybutyrate) (PHB) and a cellulose derivative, such as cellulose acetate propionate (CAP) and cellulose acetate butyrate (CAB), have been studied by means of dynamic mechanical analysis, isothermal crystallization measurements, and…
Abstract The isothermal crystallization and crystal morphology of poly(trimethylene terephthalate) (PTT)/poly (ethylene 2,6‐naphthalate) (PEN) blends were investigated with differential scanning calorimetry and polarized optical microscopy. The commonly used Avrami equation was used to fit the primary stage of isother…
The term macroemulsion is sometimes employed to distinguish the ordinary emulsions defined from microemulsions, nanoemulsions, and micellar systems. Emulsion formulations can be used orally, parenterally, ophthalmically, or topically, and they can be used by respiratory route. Nanoemulsions contain oil phases, surfact…
Isolated interstitial ${\mathrm{H}}_{2}$ and ${\mathrm{H}}_{2}$ bound to interstitial oxygen $(\mathrm{O}\text{--}{\mathrm{H}}_{2})$ in single-crystalline Si are studied by Raman scattering. Two Raman signals at 3199(1) and $3193(1)\phantom{\rule{0.3em}{0ex}}{\mathrm{cm}}^{\ensuremath{-}1}$ $(T\ensuremath{\rightarrow}…
Abstract Poly(propylene isophthalate) (PPI), poly(propylene succinate) (PPS), and poly(propylene isophthalate/succinate) (PPI‐PPS) random copolymers were synthesized and characterized in terms of chemical structure and molecular weight. The thermal behavior was examined by TGA and DSC. All the polymers showed a good t…
The jewel in the crown: Addition of a crown ether to SmI2 in acetonitrile produces a complex that insulates the SmII ion from interaction with solvent and substrates. Consequently, solvent-induced luminescence quenching is decreased, leading to a significantly increased excited-state lifetime. Thus, it is possible to…
Abstract Wide‐bandgap materials doped with rare‐earth ions are currently of great interest as new vacuum ultraviolet (VUV) phosphors for lighting and displays. This paper reports the development of a highly sensitive green phosphor, CaSO 4 :Tb,Na, which exhibits a quantum efficiency higher than 100 % by exploiting the…
The first naproxen–QD conjugates have been synthesised and investigated. These conjugates demonstrated interesting photophysical properties, good stability in an aggressive enzymatic medium, and cellular localisation in macrophage (THP-1) cells. These nanocomposites might have the potential to act as drug delivery and…
WrbA is an oligomeric flavodoxin-like protein that binds one molecule of flavin mononucleotide (FMN) per monomer and whose redox activity is implicated in oxidative stress defense. WrbA thermostability and oligomerization in the presence and absence of bound FMN were investigated using complementary biophysical method…
A series of single- and mixed-substituent polyphosphazenes with a combination of 2-(2-methoxyethoxy)ethoxy and 2-(2-phenoxyethoxy)ethoxy side groups were synthesized and evaluated to determine the effect of variations in side group ratios on the physical properties and ionic conductivity of gels. The 2-(2-phenoxyethox…
Polyelectrolyte multilayers are potential candidates for bioactive coatings with time scheduled biological activity. One way to achieve this goal is to use coatings constituted of several successive multilayers. We demonstrate in the present study that the buildup of successively two exponentially growing multilayers,…