Materials Literature
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Abstract Effect of metallic oxides on flame retardancy and the thermal stability of styrene butadiene rubber (SBR) composites based on ammonium polyphosphate (APP) and pentaerythritol (PER) was studied by the limiting oxygen index (LOI), UL 94, the cone calorimeter tests, and thermogravimetry analysis (TGA), respectiv…
Porphyrin rings CZ4, CZ6, and CZ8 that respectively comprise four, six, and eight porphyrins, immobilized in a thin PMMA film, have been investigated using single molecule fluorescence spectroscopy with a focus on the influences of the overall structural rigidity as the ring size of porphyrin array increases. Neighbor…
The purpose of this research was to explore the effects of textile properties on the microclimate inside caps and on subjective wearing sensations. Physical tests on heat and moisture transfer properties of cap fabrics were conducted, as well as tests on the sensations from subjects wearing the caps. The temperature a…
This article presents an industrially feasible method to effectively reduce vessel picking tendency by a simple chemical modification of pulp. ECF-bleached eucalyptus kraft pulp was treated with carboxymethyl cellulose (CMC) under specified conditions. The aim was to study the effects on vessel element structure and v…
Highly sensitive palladium (Pd) decorated carbon nanotube (CNT) embedding gas sensors working at atmospheric pressure were fabricated. Two types of gas sensors of bare CNTs and Pd nanoparticle decorated CNTs were synthesized by dielectrophoresis. The CNT-containing solution was dropped onto the patterned-platinum elec…
The epoxidation of hydroxyl-terminated polybutadiene (HTPB) via phase transfer catalysis (PTC) using H 2 O 2 as the oxidant and ammonium tungstate hydrate and phosphoric acid as the cocatalysts was successfully carried out in an acidic solution/organic solvent two-phase medium. The microstructures of original and epox…
We present a simple method to improve the transparency and rheological properties of polystyrene/organoclay nanocomposites. Such composites are typically prepared using organophilic derivatives of commercial montmorillonite (MMT) clays that contain a wide range of particle sizes. Our approach is to fractionate the nat…
Alternate bilayer structures of N, N ′-bis(2,5-di- tert -butylphenyl)-3,4,9,10-perylene dicarboximide (PDI), free-base phthalocyanines (Pc), and double-linked free-base phthalocyanine−fullerene dyad (Pc−C 60 ) were prepared by the Langmuir−Schäfer method and studied using a range of optical spectroscopy methods includ…
In this paper we report on the water permeability behavior of nonwoven fabrics produced from flax fibers. Three different types of needle punched nonwoven fabrics are produced by varying the depths of needle penetration during the needle punching process. The pore size and its distribution in the nonwoven fabrics are…
In this study, monofilament tubular braided structures were fabricated and their performances were analyzed. The braided tubes are in three-dimensional form, made of polyester monofilaments intended for use in medical applications. This type of structure, called a stent, is used to open clogged arteries and veins by e…
Horizontally aligned single-walled carbon nanotubes (SWNTs) were directly grown across trenches produced on SiO(2)/Si substrate, forming suspended aligned SWNTs over the trenches, and were fabricated with simple methods for infrared (IR) detection application. The horizontally aligned SWNTs can grow across trenches as…
Summary Antifungal biopolymers were prepared by incorporating natamycin (NA) and NA + rosemary extract (RE) into wheat gluten (WG) and methyl cellulose (MC) films. Interaction between antimicrobial agents and biopolymers was determined with mid‐infrared spectroscopy and scanning electron microscopy (SEM). Water vapour…
The influence of temperature, pulping time and soda concentration on the yield, kappa index, brightness and fiber density of Agave Americana L. pulp has been studied. Using a factorial design to identify the optimum operating conditions, equations relating the dependent variables to the operational variables of the pu…
We investigated charge-carrier transport in the nematic phase of small molecules such as 2-phenylbenzothiazoles by time-of-flight experiments, in which the conduction mechanism has been considered to be ionic. As a result, we established the hole and electron transports in the nematic phase of highly purified samples:…
The reaction between Mn(O(2)CMe)(2) x 4 H(2)O and hmcH(3) [hmcH(3) = 2,6-bis(hydroxymethyl)-p-cresol] in CH(2)Cl(2) in the presence of NEt(3) affords the Mn(III)(3) complex [NEt(3)(CH(2)Cl)](2)[Mn(3)O(hmcH)(3)(hmcH(2))(3)] (1). The anion of 1 contains a [Mn(III)(3)(mu(3)-O)](7+) triangular core, with the central O(2-)…
Abstract Structures of (Pro‐Pro‐Gly)4‐Xaa‐Yaa‐Gly‐(Pro‐Pro‐Gly)4 (ppg9‐XYG) where (Xaa, Yaa) = (Pro, Hyp), (Hyp, Pro) or (Hyp, Hyp) were analyzed at high resolution using synchrotron radiation. Molecular and crystal structures of these peptides are very similar to those of the (Pro‐Pro‐Gly)9 peptide. The results obtai…
Warp yarns in their different applications during weaving processes are often required to support loads, either in a static manner (simple tensile) or in a dynamic one (fatigue). For this reason, the investigation into the variations of the mechanical behavior of warp yarns during weaving condition is important. The p…
The primary goal of the present studies is to rank the monoprotonated, lacunary Wells-Dawson-type polyoxometalate [H[alpha2-P2W17O61]](9-) as a stabilizing anion for the formation and subsequent stabilization of Ir(0)(n) nanoclusters in acetone using the five-criteria method developed previously ( Ozkar , S. ; Finke ,…
The reaction of protonated magadiite with the cationic surfactant cetyltrimethylammonium (C16TMA) was studied using different C16TMA solutions. The intercalation was achieved from C16TMAOH solution. However, only adsorption of C16TMA cations occurred on the external silicate surfaces from C16TMABr and C16TMACl solutio…
Abstract Akkordeonspiel: Beim Abkühlen eines Einkristalls eines mikroporösen fluorigen metall‐organischen Gerüsts unter Umgebungsbedingungen tritt bei Gasadsorption ein starkes Atmen auf, und mehrere N2‐Moleküle werden in Kanäle und Käfige gefüllt (siehe Bild). Im Vakuum zeigt das Gerüst eine deutliche positive thermi…