Materials Literature
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A novel waterborne polyurethane-silanized CoFe2O-acrylate magnetic pressure-sensitive adhesive was prepared. With the increase of PU content, gel content, swelling capability, and SAFT increased, and fracture energy increased first, then decreased. The T-peeling strength increased from 8.93 to 19.07 N · m−1, tack forc…
We report a detailed study of the magnetic properties of CeCo$_{0.85}$Fe$_{0.15}$Si under high magnetic fields (up to 16 Tesla) measuring different physical properties such as specific heat, magnetization, electrical resistivity, thermal expansion and magnetostriction. CeCo$_{0.85}$Fe$_{0.15}$Si becomes antiferromagne…
A new approach to enhance performance and to stabilize active layer morphology by introducing a reacting processing additive, i.e., ditert butyl peroxide (DTBP), to the donor (P3HT) and acceptor (PCBM) solution with minimal disturbance in the packing of conjugated polymer is presented. Effects of DTBP contents and the…
Abstract Residual scale inhibitor analysis in produced waters, particularly for the sulphonated co-polymers is recognised as an ongoing challenge for many operators and chemical suppliers. Early benchtop methods have been well used and documented (e.g. dialysis / Hyamine based techniques etc.) however are considered t…
Abstract Steamflooding has been used as one of the emerging techniques to enhance heavy oil production. Scale control during steamflooding, on the other hand, can be challenging since the high temperature of the steamflood can decompose thermally unstable inhibitors and/or lead to the precipitation of metal-inhibitor…
Abstract External electric field-induced structural changes in the initial growth processes of pentacene on a sylanol-saturated amorphous SiO 2 surface have been investigated using molecular dynamics simulations. A series of electric fields with different directions and strengths are applied to the initial lateral-ori…
The presence of defective native copper‐oxide (CuxO) remains a challenge for device technologies owing to its detrimental effects on the adhesion, moisture sensitivity and stress‐migration. Here we demonstrate a rapid, single‐step, and organic‐solvent‐free sol‐gel deposition process that is capable of simultaneously r…
Abstract Mineral scale deposition on surfaces of oil production equipment has been recognised as a major flow assurance problem. Most of the mineral scale deposition work published has solely focused on laboratory experiments and very little data are available that demonstrate such results are relevant and can be scal…
Twisting is one of the most important steps in the yarn spinning, which influences the geometry of spinning triangle and determines the properties of spun yarns. Airflow is one of the most important measures on improving yarn spinning. In this paper, a kind of air nozzle with vortex guiding channel was designed and us…
ABSTRACT Photochromic dyes have restricted use in rigid polycarbonates because of slow coloration and decoloration kinetics. In this study, it is shown that the decoloration kinetics of two photochromic dyes can be controlled by tuning the chain stiffness and free volume of the host matrix. The introduction of flexibl…
Bituminous material is a limited natural resource mainly used in hot mix asphalt production. The high costs coupled with the large amounts required have been forcing pavement engineers to find cost effective alternative materials that can be used as extenders or partial substitutes. This prohibitive cost factor led th…
Abstract An asymmetrical diarylethene (1O) with a bi‐8‐carboxamidoquinoline unit was synthesized. Its photochromic and fluorescence performances on stimulation with both light and metal ions showed that the diarylethene could serve as a highly selective ratiometric fluorescent chemosensor to detect Zn2+ ions based on…
A number of prepared alkaline-earth-rare-earth silicates and germanates also have the structure of apatite type. The fifth chapter of this book then continues with description of synthetic compounds of apatite structure. Attention will be directed to description of rare-earth element bearing apatites and oxyapatites.…
ABSTRACT Photoorientation and reorientation processes induced by illumination of the samples with oppositely directed polarized light and by the thermal treatment were studied for the films of triblock copolymer pAzo10‐b‐pPhM80‐b‐pAzo10 consisting of a nematic phenyl benzoate сentral sub‐block (PhM, DP = 80) with two…
A mathematical model based on the principles of conductive heat transfer is presented to predict the thermal resistance of cut pile carpet. The cut pile carpet assembly is considered as a network of thermal resistances of the tuft yarns, trapped air, and the primary backing fabric. A straightforward calculation of the…
We explore the optical properties of a coaxial plasmonic metamaterial consisting of hollow dielectric cylinders with a diameter of 100–250 nm and a ring wall width of 10–50 nm, embedded in metal. We investigate the modal electric and magnetic fields and dispersion relation for different geometries and material choices…
The excitation of surface plasmons was studied by nano-structural indium tin oxide (ITO) films in the infrared range using nano-imprint lithography (NIL). We investigated the effect of the diameter of silica spheres, thickness of ITO film, and ordering degree of the mask plate on the transmission spectra of structural…
Establishing active control of material shape has been a long standing theme in materials science. Polymers occupy a special niche in this effort. Unlike shape-changing alloys and piezoelectrics, polymers are lightweight, relatively inexpensive, and can be deformed to several hundred-percent strain. Examples of such a…
Abstract Accurate detection of scale inhibitor residuals from produced waters is a critical part of flow assurance. Tagged scale inhibitors have been developed to improve the detection limit. The purpose of having multiple different tags on the same inhibitor chemistry is to be able to separately detect the level of i…
Novel imide oligomers (calculated molecular weights: 1250–5000 g mol −1 ) based on the mixture of thioetherdiphthalic anhydride isomers ( m-TDPA) with 2-phenyl-4,4′-diaminodiphenyl ether ( p-ODA) in the presence of 4-phenylethynylphthalic anhydride (PEPA) as reactive endcapping agent were prepared. Then pyromellitic d…