Materials Literature
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Abstract This review article introduces various aspects of dynamic vulcanization as applied to thermoplastic elastomers (TPEs). The classification of polymer blends and TPEs, the development of thermoplastic vulcanizates (TPVs), and the application of different types of crosslinking systems with special emphasis on pe…
This synthesis documents the results of a comprehensive review of worldwide information dealing with the following issues as related to warm-mix asphalt (WMA) technology: (1) current state of the art/practice of WMA, (2) benefits and costs of WMA technology, (3) plant modifications to accommodate certain WMA processes…
In this current investigation psyllium has been functionalized with acrylamide in the presence of potassium persulphate (KPS)-hexamethylene tetramine (HMTA) as an initiator-crosslinker system. After the initial optimization of different reaction parameters the resultant hydrogel was used for the absorption of water fr…
Based on a previous optimisation of set-up parameters for injection moulding of polyamide 6-6 (PA 6-6) reinforced with 40-wt% of 10 mm long glass fibre, the aim of this paper is to define suitable guidelines to further improve the mechanical performances of PA 6-6/glass long fibre thermoplastic (LFT) injection mouldin…
Abstract Degradation of rubber vulcanizates in the presence and absence of air as well as in presence of ozone is reviewed in this paper. The paper also outlines the means to overcome this undesirable phenomenon. Under anaerobic aging conditions, which is termed as reversion, the vulcanizates are exposed to elevated t…
High intensity pulsed ultrasound can produce significant mechanical tissue fractionation with sharp boundaries ("histotripsy"). At a tissue-fluid interface, histotripsy produces clearly demarcated tissue erosion and the erosion efficiency depends on pulse parameters. Acoustic cavitation is believed to be the primary m…
We propose a novel metamaterial for Surface Plasmon Polarition guiding, amplification and modulation. Specific example of AlN/GaN Quantum Cascade Amplifier and its dispersion engineering are studied in details. The general original concept of metamaterials based on inclusions of low-dimensional quantum structures (art…
The natural fiber composites of sisal/silk unsaturated polyester based hybrid composites with different fiber lengths were prepared. Sisal—silk fiber at a ratio of 1 : 1 has been incorporated with unsaturated polyester resin with different fiber lengths such as 1, 2, and 3 cm. The variation of mechanical properties su…
For La 0.825 3+ Sr 0.175 2 +Mn3+O 2.912 2− anion-deficient manganite, the specific magnetization, the dynamic magnetic susceptibility, and the heat capacity are investigated. This material is found to be an inhomogeneous ferromagnet below the Curie point T C ≈ 122 K, which is much lower than the Curie point determined…
This paper describes a study on the use of a polypropylene (PP)/layered silicate nanocomposite as packaging film, agricultural film, and automotive panels. The study’s main question was “Are the environmental impacts and costs throughout the life cycle of nanocomposite products lower than those of products manufacture…
Cationically and anionically charged hyperbranched conjugated polyelectrolytes (HB-CPEs) PNMe 3 + and PSO 3 - have been synthesized via the Heck coupling method using A 3 + B 2 type approach. Both HB-CPEs are highly fluorescent and soluble in polar organic solvents allowing processing to electrostatic adsorption. TiO…
We report on the interfacial structure, the current−voltage ( I − V ) characteristics, and contact resistance of metal electrode−carbon nanotube contacts for five metals, Ti, Pd, Pt, Cu, and Au, based on first-principles quantum mechanical density functional and matrix Green's function methods. We find that Ti leads t…
For the first time, we report a simple method to fabricate a quantum dot (QD)−polymer composite completely via aqueous media from synthesis of QDs to formation of composite. A series of l -cysteine-capped CdTe QDs with tunable emission from green to red were prepared by using hydrothermal techniques, and the correspon…
Abstract This review aims to provide a summary of some of the challenges in correlating surface science and biology, with particular emphasis on areas where plasma polymerization has and will play an important role as a method to synthesize reproducible and well‐defined surfaces. Since the range of possible applicatio…
This effort investigates the relation between ejecta production and shock-breakout pressure (PSB) for Sn shocked with a Taylor shockwave (unsupported) to pressures near the solid-on-release/partial melt-on-release phase transition region. The shockwaves were created by detonation of high explosive (HE) PBX-9501 on the…
The ferromagnetic to nonferromagnetic (α-β) phase transition in epitaxial MnAs layers on GaAs(100) is studied by x-ray magnetic circular dichroism and x-ray magnetic linear dichroism photoemission electron microscopy in order to elucidate the nature of the controversial nonferromagnetic state of β-MnAs. In the coexist…
Polymeric nanoparticles have long been sought after as carriers for systemic and targeted drug delivery. However, applications of nanoparticles are limited by their short in vivo circulation lifetimes. We report that by attaching polymeric nanoparticles to the surface of red blood cells, it is possible to dramatically…
We performed first-principles calculations to investigate the hydrogen storage characteristics of carbon-based 3-D solid structures, called covalently bonded graphenes (CBGs). Using the density functional method and the Møller-Plesset perturbation method, we show that H2 molecular binding in the CBGs is stronger than…
Targeting of tumors with radionuclides for radiotherapeutic purposes is often limited by inadequate delivery to lesions using currently available targeting vehicles (e.g., monoclonal antibodies and peptides), relatively low and heterogeneous epitope/receptor expression on cancer cells, as well as
A facile chemical polymerization is introduced to synthesize relatively long polyaniline nanofibers/nanotubes via self-assembly. 1-D elongation is achieved through the rapid formation of a substantial amount of dimer cation−radicals using excess initiator. 1-D nanostructures can be altered into 3-D hollow micro-/nanos…