Materials Literature
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A new 6-benzylaminopurine-functionalized disubstituted polyacetylene (P2) with strong green fluorescence is successfully synthesized by utilizing the postfunctional method. The polymer is soluble in common organic solvents, and its strong green fluorescence can be quenched by copper and cobalt ions with a detection li…
Polymethylmethacrylate/cellulose nanocomposites were prepared by in situ polymerization and ex situ dispersion techniques with 10 wt% loading of cellulose nanoparticles. Cellulose nanoparticles were prepared from jute fibers by acid hydrolysis. The suspension polymerization of methylmethacrylate was carried out in pre…
The development of a suitable sensing material for a high-sensitivity detection method for ethylene is needed to enhance the efficiency of estimating the life expectancy of agricultural products. A novel sensor for ethylene gas comprised of a polyaniline/multiwall carbon nanotube/tin oxide nanoparticle (PANi/MWCNT/SnO…
Magnetization as a function of applied pressure up to 10.16 kbar and magnetic field were obtained for layered [Ru(2)(O(2)CBu(t))(4)](3)[M(CN)(6)]·2H(2)O (M = Cr, Fe). For M = Fe, the T(c) increased by 13% from 6.1 to 6.9 K with a significant increase in the coercive field, H(cr), from 5 to 65 Oe, followed by a sharp d…
The requirements to supply increasing quantities of electricity and simultaneously to reduce the environmental impact of its production are currently major issues for the power generation industry. Routes to meeting these challenges include the development and use of power plants with ever increasing efficiencies coup…
The growth of single and multiple (three) ZnO/ZnMgO quantum well samples on sapphire substrates, through a two-step temperature variation growth of ZnO buffer layers by molecular beam epitaxy (MBE), were investigated. For single quantum well (QW) growth, the thicker first ZnMgO barrier layer about 220 nm on the high-t…
Abstract The halogen‐free flame retardance of glass fiber reinforced polyamide‐6 (PA6) is an everlastingly challenge due to well‐known wick effect. In this research, a novel system composed of a nitrogen–phosphorous flame retardant, melamine polyphosphate combined with a macromolecular charring agent, silicon‐modified…
This article highlights the effect of using maleic anhydride-assisted SEBS compatibilizer precursor on the morphology and mechanical properties of the polypropylene (PP)/poly (trimethylene terephthalate) (PTT)/poly(styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS) 70/15/15 ternary blends. In all ternary blends, the a…
Mechanical properties of huntite/hydromagnesite mineral reinforced polymeric composites were investigated. Phase and microstructural analysis of HM powders were undertaken using XRD and SEM-EDS prior to the fabrication of the composite materials. Minerals with different particle size and content were subsequently adde…
Thermoplastic polyurethane/graphene nanoplatelets conductive composite was in situ synthesised by ball milling at room temperature, using polytetramethylene glycol as soft segment, 4-methyl-m-phenylene diisocyanate as hard segment, 1,4-butanediol as chain-extending agents, graphene nanoplatelets as conductive filler.…
The β-branched C3 unit in leinamycin biosynthesis is installed by a set of four proteins, LnmFKLM. In vitro biochemical investigation confirmed that LnmK is a bifunctional acyltransferase/decarboxylase (AT/DC) that catalyzes first self-acylation using methylmalonyl-CoA as a substrate and subsequently transacylation of…
The nano/ultrafine grains with different orientations were obtained by reversion transformation for austenitic stainless steel, and their tensile properties were investigated at room temperature. Comparing with the transverse direction sample, the much slower transformation induced plasticity was responsible for excel…
In the current investigation, Nb surface segregation has been studied in polycrystalline Nb-doped TiO 2 (0.65 at %) at two extremes of oxygen activity ( p (O 2 ) = 101 kPa and p (O 2 ) = 10 –15 Pa) over the temperature range of 1173 to 1673 K. The aim has been to establish the effect of changes in ambient oxygen activ…
The present study compares structural and optical modifications of lead sulfide (PbS) quantum dots under swift heavy ion (SHI) irradiation. PbS quantum dots are prepared following an inexpensive chemical route using polyvinyl alcohol as the dielectric host matrix. SHI irradiation of the samples is carried out with 100…
The dynamic process of energy transfer from semiconductor nanocrystals acting as donors to multiple acceptors attached to their surface emerges as an important tool for probing the nanoparticle environment in the nanometric scale. Understanding the underlying principles which govern the dynamics of the energy transfer…
Previous studies have demonstrated that stone comminution decreases with increased pulse repetition frequency as a result of bubble proliferation in the cavitation field of a shock wave lithotripter (Pishchalnikov et al 2011 J. Acoust. Soc. Am. 130 EL87-93). If cavitation nuclei remain in the propagation path of succe…
Chitosan-filled recycled polyethylene biocomposites were prepared using an internal mixer. The effect of maleic anhydride-grafted-polyethylene (MAPE) and silane of recycled polyethylene (RPE)/chitosan biocomposites on tensile properties, water absorption, morphology and thermal properties of recycled polyethylene (RPE…
In this article, we report on the synthesis and thermotropic behaviour of methacrylic polymers containing 4′-(4-alkyloxyphenyl)azobenzene mesogens attached to the backbone through n-alkyloxy spacers of 6 or 10 methylene groups. Polymerisations were carried out via free radicals using azobisisobutyronitrile (AIBN) as i…
Abstract Polyethylene blends with bimodal molecular weight distribution were prepared by blending a high molecular weight polyethylene and a low molecular weight polyethylene in different ratios in xylene solution. The blends and their components were characterized by the high temperature gel permeation chromatograph…
Poly(urethane-dimethylsiloxane) (PU-PDMS) copolymers with 4,4′-methylenebis(cyclohexyl isocyanate), different polyethers i.e., poly(oxytetramethylene)diol, poly(ethylene glycol), poly(propylene glycol), and α,ω-dihydroxy terminated polydimethylsiloxane extended with 1,4-butanediol in two-step solution polymerization w…