Materials Literature
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Abstract The objective of this work was to study the effectiveness of commercial compatibilizers (E‐EA‐MAH copolymer) on the morphology of blends of polypropylene/ethylene polypropylene rubber (PP/EPR) (78/22) and metallocenic ethylene‐octene copolymer (EOC) polluted by (poly (vinyl chloride) (PVC) and by an oil for e…
The molecular structure of the interphase between plasma-polymerized acetylene films and steel substrates was determined using in situ reflection–absorption infrared spectroscopy (RAIR) and X-ray photoelectron spectroscopy (XPS). Plasma-polymerized acetylene films were deposited onto polished steel substrates using ar…
Differential scanning calorimeter (DSC) and thermal conductivity meter were used for measurement of thermal conductivity by unsteady state technique of the high impact polystyrene (HIPS) composites filled with 0.5, 1.5, and 2.5 wt.% of CaCO3 nano particles. A comparison of experimental and theoretical values of (K c /…
Abstract Single crystals of lead magnesium niobate titanate, 0.65 PbMg 2/3 Nb 1/3 O 3 (PMN) ‐0.35PbTiO 3 (PT) were grown using flux method near morphotropic phase boundary (MPB) composition. The crystals grown at the centre of the platinum crucible were found to PT deficient compared to those grown near the walls of t…
Contrast agents are widely employed in medical imaging for improved visualization of anatomy and disease characterization. In recent years, there is increasing interest in developing novel contrast agents and using their tissue accumulation and clearance patterns to obtain physiological information. The goal of this i…
Abstract A simple synthetic method for preparing the core‐shell latex particles containing fluorinated shell was presented. Polymerization was achieved by a low‐sheer monomer‐starved emulsion polymerization process, thus facilitating mobility and subsequent polymerization of perfluoroacrylate (FA) along with methyl me…
The amidase reaction of trypsin, which is a member of the serine proteinase family, is accelerated by its complexation with block ionomers containing a polycarboxylate block, such as PEG-PAA, PEG-PGA, or PEG-PMA. PEG-PAA and PEG-PGA had similar effects, causing an increase in the k(cat) value and a shift in the pH pro…
Abstract 4‐(2‐hydroxyphenylamino)‐pent‐3‐en‐2‐one (HPAP) was synthesized and single crystals were grown by the solution growth technique using methanol as a solvent. The crystals having orthorhombic symmetry were characterized by single crystal XRD, FTIR spectroscopy, NMR spectroscopy, TGA, DSC and dielectric studies.…
In this paper, the authors have systematically studied the microphase separation and crystallization during spin coating of an ABC triblock copolymer, polystyrene-b-poly(2-vinylpyridine)-b-poly(ethylene oxide) (PS-b-P2VP-b-PEO). The microphase separation of PS-b-P2VP-b-PEO and the crystallization of PEO blocks can be…
Polymer blends of commercial polyphenylene oxide (mPPO) and polypropylene (PP) are immiscible and incompatible in blend system. Maleic anhydride-grafted-copolymer has been employed as in situ compatibilizer for the mPPO and PP blends. This copolymer contains reactive anhydride functional groups that were able to react…
By using a first-principles method, the theoretical analysis of six probable $\mathrm{Au}∕\mathrm{Mg}(001)$ interface models points out that two of them with oxygen or magnesium vacancies in the interface are most stable. It is found in this work that besides O or Mg vacancies having to exist in this interface, the st…
The uses of polyurethane foams have been increased too much as new abilities are known for these polymers. This increments lead to an ecological problem. They have low density, occupying large spaces and not easy degradable. This causes environmental pollution that is a disadvantage of artificial materials. In this st…
Abstract To prepare hard and transparent poly (methyl methacrylate)‐silica coat film on glass or polycarbonate substrates, poly(methyl methacrylate‐ co ‐2‐hydroxyethyl methacrylate) random copolymers and perhydropolysilazane (PHPS) were blended in solution. Then the solution was cast on the substrates. The grafting of…
A Y 2 O 3 :Yb nanoscale magnet that belongs to the cubic C-type or bixbyite structure family was synthesized by high energy ball milling (HEBM). An as-prepared sample (S1) was annealed at 650 °C (S2) and 950 °C (S3). Cation populations were determined by the refinement of site occupancies. It was found that in S1 and…
The modeling of ring-opening polymerization of (D,L)-lactide to poly(lactic acid) (PLA) has been performed. Except some reported data on the apparent rate constant, there is lack of data in the literature on the rate constants for initiation, propagation and termination steps of PLA polymerization. Using a simple nume…
Abstract A simple method for preparing LiCaAlF 6 :Eu 2+ phosphor is reported. Photoluminescence (PL) and thermoluminescence (TL) studies were carried out. The TL sensitivity of the phosphor is nearly twice that of CaSO 4 :Dy TLD phosphor. Several other properties required for TL dosimetry are superior as well. It is s…
Among different polyethylene cross-linking methods, such as peroxide, irradiation, and silane cross-linking, silane-based methods are the most suitable methods for producing cable insulation and hot water pipe materials due to process simplicity and superior properties of its product. Some electrical, thermal and mech…
The field of cardiovascular tissue engineering has experienced tremendous advances in the past several decades, but the clinical reality of engineered heart tissue and vascular conduits remains immature. Stem cells and progenitor cells are promising cell sources for engineering functional cardiovascular tissues. To re…
The thermal stability of waterborne polyurethanes was measured by use of the thermogravimetric analysis. Waterborne polyurethanes (wbPUR) with catalysts of different selectivity were characterized using dynamic heating. In the dynamic method, heating rates with increments of 0.5, 1, 2, 5, and 10°C min−1 were used in t…
Abstract In this article, the dynamic vulcanization process was applied to polypropylene (PP)/Novolac blends compatibilized with maleic anhydride‐grafted PP (MAH‐ g ‐PP). The influences of dynamic cure, content of MAH‐ g ‐PP, Novolac, and curing agent on mechanical properties of the PP/Novolac blends were investigated…