Materials Literature
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The strength of structural adhesive joints for the bonding of metals such as steel or aluminium is mainly reduced by the degradation of the polymer/metal interface due to the ingression of water and subsequent electrochemical reactions. In this work, adhesive/metal interfaces were modified with ultra‐thin adhesion pro…
Abstract In this work, surface modification technique with coupling agents and anchoring polymerization was adopted to tailor the surface properties of nanoscaled titanium dioxide (TiO 2 ). Ethyl glycol sols with TiO 2 were prepared in order to simulate the dispersibility of differently modified TiO 2 in a molten poly…
A fabrication process for nanoelectrodes with a nanogap of ∼35 nm is presented. This process is based on controlled placement of carbon nanotubes on metal electrodes using an alternating-current (ac) electric field. One bundle of single-walled nanotubes (SWNT) was placed successfully between two electrodes using an ac…
Abstract Summary: The bulk reactions between carboxy‐terminated polyamide‐12 ( PA12 ) or carboxy‐terminated poly(butane‐1,4‐diyl adipate) ( PBDA ) and 2,2′‐(1,3‐phenylene)bis(2‐oxazoline) ( mbox ), 2,2′‐(1,4‐phenylene)bis(2‐oxazoline) ( pbox ), 2,2′‐(2,6‐pyridylene)bis(2‐oxazoline) ( pybox ) as chain‐coupling agents w…
Abstract Oil‐in‐water emulsions (30∶70, vol/vol) were formulated with sunflower lecithin to characterize the destabilization processes and the vesicles formed. Dispersions containing levels of 0.1% lecithin were more stable against coalescence than the control system. When the lecithin concentration was increased to 0…
Abstract Control of aftertreatment systems for lean burn technology engines represents a big challenge, due to the lack of on‐board emission measurements and the sensitivity of the hardware components to ageing and sulphur poisoning. In this paper, we consider the control and adaptation of aftertreatment systems invol…
Single crystals of bismuth orthoborate, BiBO 3 , were grown from the melt in the system Li 2 OBi 2 O 3 - B 2 O 3 · BiBO 3 is confirmed to adopt at least two different structural modifications. The modification BiBO 3 (I) (corresponding to PDF Nr. 28-0169) crystallizes with space group P2 1 /c. The structure consists o…
Electrochemical impedance spectroscopy (EIS) is a technique that quantitatively measures the amount of corrosion protection provided by a coating to a metal substrate. This article illustrates the theory of EIS along with its potential for application in the evaluation of protective coatings for outdoor bronze sculptu…
Abstract Summary: Copolyesters containing aliphatic units in the main chain were obtained by reacting high molar mass poly(ethylene terephthalate) (PET) with ε ‐caprolactone or δ ‐valerolactone at high temperature in the bulk. γ ‐Butyrolactone did not react in these conditions. Thermal properties were studied by DSC a…
Abstract This paper investigates the structural changes of polyvinyl chloride (PVC) in melt‐blends of a low‐density polyethylene (LDPE) and polyvinyl chloride (PVC), and the effects of LDPE content and number of extrusion passes. These effects were examined in terms of changes in weight average molecular weight and nu…
Abstract In this study, glass and glass fibres were treated to dry interfacial treatment by the use of plasma technology. It has been presented that the optimum parameters for the best wettability of the samples at the time of plasma generation were an oxygen atmosphere, 0.1 Torr system pressure, 100 W discharge power…
The transient eddy current fields are short-circuit forces upon the coils of large power transformers are analyzed. The proposed approach is based on the A-V-A formulation in which the eddy current field and the electric circuit equations are solved simultaneously. The effectiveness of a magnetic bypass plate near the…
Abstract Toughened epoxy systems have found increasing applications in automotive, aerospace, and electronic packaging industries. The present article reported work done for elucidation of gelation and vitrification for various epoxy systems and their blends with dendritic hyperbranched polymers (HBPs) having epoxy an…
Compounds containing 6.3–6.5 wt % H and thermally stable in vacuum up to 500°C were obtained by annealing graphite nanofibers and single-walled carbon nanotubes in hydrogen atmosphere under a pressure of 9 GPa at temperatures up to 45°C. A change in the X-ray diffraction patterns indicates that the crystal lattice of…
A model of simultaneous transport in hygroscopic porous materials was developed. Water in fabrics is considered to be present in three forms: liquid water in the void space between fibers, bound water in the fibers, and vapor. It is assumed that the heat and mass transport mechanisms include movement of liquid water d…
Abstract Amide groups were anchored covalently on the surface of ethylene‐ co ‐acrylic acid (EAA) copolymer film by surface grafting of amino acid intermediates. The process consisted of four steps: conversion of carboxylic acid groups on the EAA surface to acid chloride groups, amino acid attachment, conversion of am…
Abstract Summary: The non‐isothermal crystallization of intercalated poly(trimethylene terephthalate) (PTT)/clay nanocomposites was investigated quantitatively by different methods. Non‐isothermal crystallization of pure PTT can be described by the Ozawa equation, but the Ozawa theory is not valid for PTT/clay nanocom…
We newly produced bioresorbable beta-chitin sponge and used it as a scaffold for three-dimensional culture of chondrocytes. beta-Chitin was obtained from the pens of Loligo squid and the beta-chitin sponge was formed into a pillar shape. We produced cartilage-scaffold composites with a cartilage-like layer at the surf…
The effect of a range of carbon additions on the microstructure and mechanical properties of the beta titanium alloy Ti-15-3 (Ti - 15V - 3Al - 3Sn - 3Cr) (wt-%) has been studied. It has been found that the strength is improved by about 16% and the ductility of Ti-15-3 is maintained at about the same level when 0.2% ca…
Composites containing NiTi shape memory alloy (SMA) long-fiber, short-fibers or Ti long-fiber in a Polycarbonate (PC) matrix have been fabricated by the injection molding technique. Also, prestrained SMA long-fiber/Epoxy matrix composites have been fabricated. The fracture behavior and thermo-mechanical deformation be…