Materials Literature
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In this study, we investigated the relationship between the fabric drape coefficient from the drape meter and mechanical properties tested on the fabric assurance by simple testing system (FAST). Different kinds of woven fabrics with two kinds of weave (plain and twill) were tested. Three regression models are propose…
Epitaxial ultrathin titanium dioxide films of 0.3 to approximately 7 nm thickness on a metal single crystal substrate have been investigated by high resolution vibrational and electron spectroscopies. The data complement previous morphological data provided by scanned probe microscopy and low energy electron diffracti…
Abstract Castor oil (CO) based polyurethane (PU)– polyester nonwoven fabric composites were fabricated by impregnating the polyester nonwoven fabric in a reactive composition containing CO and diisocyanate. Composites were fabricated with two different isocyanates such as toluene‐2, 4‐diisocyanate (TDI) and hexamethyl…
In the past few years, reconstruction methods have been developed and applied successfully to restore the beta microtexture in titanium alloys. This contribution shows how these methods are extended to other transformations often encountered in advanced titanium alloys: the alpha (hcp)-->gamma (tetragonal) and the bet…
The thermal stability and hydrogen desorption kinetics for MgH 2 and Mg 2 NiH 4 before and after doping with TiF 3 or Ti(OBu n ) 4 were studied by X-ray diffraction, differential thermal analysis, thermogravimetry, Fourier transform infrared spectroscopy, and X-ray absorption spectroscopy techniques. Unlike the previo…
Sodium phosphate tellurite glasses in the system (NaPO(3))(x)(TeO(2))(1-) (x) were prepared and structurally characterized by thermal analysis, vibrational spectroscopy, X-ray photoelectron spectroscopy (XPS) and a variety of complementary solid-state nuclear magnetic resonance (NMR) techniques. Unlike the situation i…
Au@Ag and Ag@Au core−shell nanoparticles were synthesized using sequential laser ablation of metal targets in water. The resulting core−shell particles were then exposed to iodine or 1,6−hexanedithiol. For the Ag@Au + I 2 → Au@AgI and Au@Ag + dithiol → Ag@Au−dithiol reactions, inversion of the core−shell structures re…
In this work, the potential of low-viscous branched polymers for gas separation applications such as CO 2 absorption from flue gas is examined. Carbon dioxide and nitrogen solubilities are measured at low pressures for linear and branched polyethers, hyperbranched polyesters, and polyamines such as a polyamidoamine an…
Abstract Gold nanoparticles (AuNPs) protected by an alkanethiol in nonaqueous solvent are converted to AuNPs with a surrounding layer of a polyoxometalate, AuNP‐POM, by ligand exchange and liquid–liquid extraction into aqueous solution without changing the size of the metal core. With glassy carbon electrodes modified…
Two bromide-bearing regioregular head-to-tail polythiophenes (polymers 1 and 3 ) were prepared by using Grignard metathesis method to polymerize 2,5-dibromo-3-bromohexylthiophene (2) and 2,5-dibromo-3-(11-bromo-3,6,9-trioxa-1-undecoxy)thiophene ( 7 ), respectively. Well-defined regioregular head-to-tail glycopolythiop…
Unlike other synthetic polymeric materials, Starburst (Dendritic Nanotechnologies Inc., Mount Pleasant, MI, USA.) dendrimers are a unique class of nanoscopic synthetic macromolecules. They allow controlled architecture, low polydispersity and defined molecular mass. These molecules contain a very large number of react…
Photochromic ring closure reaction dynamics of 1,2-bis(2-methylbenzo[b]thiophen-3-yl)hexafluoro cyclopentene and its derivatives in solution has been studied by femtosecond time-resolved fluorescence. Time-resolved spontaneous fluorescence of the open isomer reveals a fast component of around 1 ps and a slow component…
This article investigates the influence of varying strand spacings in the case of siro or double-rove yarns. Studies have been carried out on cotton, polyester and polyester–cotton yarns. Although the trend is found to be the same, cotton yarns exhibited the best cohesion followed by polyester–cotton and polyester yar…
The effect of variables, namely yarn fineness, shrinkable acrylic proportion and twist level, on various properties of cotton–acrylic blended bulked yarns has been studied by relaxing shrinkable component of the yarns using boiling water treatment. A three-variable factorial design technique proposed by Box and Behnke…
Abstract The agglomeration of paracetamol during crystallization in different pure solvents has been investigated. Narrowly sieved crystals were suspended as seeds and allowed to grow and agglomerate at constant supersaturation and temperature. Particles from each experiment were examined by image analysis and multiva…
Abstract A novel synthetic approach towards heteroleptic triple‐decker crown‐phthalocyaninato complexes [(15C5) 4 Pc]M[(15C5) 4 Pc]M(Pc) and (Pc)M[(15C5) 4 Pc]M(Pc) [where (15C5) 4 Pc 2– = 2,3,9,10,16,17,24,25‐tetrakis(15‐crown‐5)phthalocyaninato dianion; Pc 2– = phthalocyaninato dianion; M = Sm, Tb, Dy, Tm and Y] has…
ABSTRACT Emulsion coatings were formulated and films were developed using pectin as the basic structural component. Preliminary experiments were carried out to determine the proper type and concentration of pectin, lipid and plasticizers in the film. The effects of pectin, beeswax and sorbitol concentration on water v…
Proton and deuteron field-cycling NMR relaxometry was applied to deuterated and undeuterated bulk polyethyleneoxide and polybutadiene melts and mixtures thereof with molecular weights above the critical value. Spin-lattice relaxation data due to intrasegment (quadrupolar) couplings and intra- and interchain (dipolar)…
In this paper we investigate glass transition in aqueous suspension of synthetic hectorite clay, laponite. We believe that upon dispersing laponite clay in water, the system comprises of clusters (agglomerates) of laponite dispersed in the same. Subsequent osmotic swelling of these clusters leads to an increase in the…
Abstract Poly(propylene) (PP) composites were prepared by using eggshell (ES) as filler and their mechanical properties were compared with those using talc (TA) and calcium carbonate (CC) of different grain sizes ( X 50 ). A decrease in impact strength and deformation at break with increase in filler content was obser…