Materials Literature
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A novel method was proposed to produce thermoplastic elastomers containing ground tyre rubber (GTR). The new proprietary technology is based on the fact that bitumen and related materials may contribute to the devulcanisation of GTR and act at the same time as plasticiser and compatibiliser in the blends. Blends conta…
Abstract The thermal behavior of polyamide 6/amorphous polyamide blends has been investigated as a function of blend composition and temperature. Crystal phase nature and stability are probed by a combination of thermal analysis, X‐ray diffraction and Fourier transform infrared spectroscopy. Ductility appears to be st…
Abstract Summary: A novel method was used to prepare poly(propylene)/montmorillonite/calcium carbonate nanocomposites by melt‐mixing, using pristine montmorillonite (MMT), hexadecyltrimethylammonium bromide (C16), calcium carbonate (CaCO 3 ) and a matrix in a twin‐screw extruder. Two different sizes of calcium carbona…
By analysing the physical mechanisms of heat and moisture transfer through textiles with PCM and carrying out the test of thermal regulating functional performance of PCM garment in climate chamber, the thermal regulating functional performance of PCM garments have been analysed and discussed in this paper. Both numer…
Abstract Twelve neutral stable complexes of ytterbium( III ) and erbium( III ) coordinated by anionic hydridotris(pyrazol‐1‐yl)borate and meso ‐tetraphenylporphyrinate, and its derivatives with different substituents in the para position of the phenyl groups, were prepared and characterized. Crystal structure analyses…
A cryogenic treatment (-306°F) was applied to C2 tungsten carbide (WC -6% Co) and compared with untreated carbide to determine if tool wear could be reduced during turning tests with medium density fiberboard (MDF). Both the tool force data and observation of the cutting edges indicate that tool wear was reduced. The…
Abstract The efficiency of heterogeneous nucleation of isotactic polypropylenes (iPP) with various isotacticity and MWD is estimated by an increase of the crystallization temperature ( T cr ). A bi‐component nucleating system, composed of a pimelic acid and a calcium stearate, was added to the polymeric matrix in the…
Abstract The potential of chitosan as a coagulant in commercial tofu preparation was investigated with six chitosans of different molecular weights using various treatments. The following optimum processing conditions for tofu preparation were proposed: chitosan with a molecular weight of 28 kDa; chitosan solution typ…
A room temperature solid-state structural transformation was observed in 3 nm ZnS nanoparticles in methanol following the addition of water (Zhang et al., Nature 424, 1025, 2003). Experimental wide angle x-ray scattering (WAXS), x-ray absorption near edge structure (XANES) and extended x-ray absorption fine structure…
Valve morphogenesis was followed in normal living cells, during treatment with anti-cytoskeletal drugs, and in cells fixed for electron and immunofluoresence microscopy. The long terminal spine-like extrusion is a tubular labiate process (LP). The new valves and LPs were initiated by mid-cleavage. After cytokinesis, t…
A crystalline form of hydrated calcium phosphate, brushite (CaHPO 4 ⋅2H 2 O), has been studied by means of total energy First Principles calculations based on the Density Functional Theory (DFT) approximation. The experimental crystal lattice parameters of this mineral have been reproduced with good agreement. The pow…
Abstract Summary: The influences of short chain branching (SBC) on the melt miscibility of low‐density polyethylene (LDPE) with linear high‐density polyethylene (HDPE) were investigated by rheological methods. Two LDPE resins with different branch contents were blended with the same linear HDPE. Dynamic and steady she…
The heat capacity at constant pressure ( C p ) of mullite (single crystalline and dense and powdered polycrystalline) was determined between −125° and 1400°C. Measurements were performed in three laboratories using two different disk‐type differential scanning calorimeters (DLR and Netzsch) and one cylinder‐type (Seta…
Abstract Electroless plating of copper via a tin‐free activation process was carried out effectively on two types of fluorinated polyimide (FPI) films modified by UV‐induced surface graft copolymerization with N‐containing monomers, such as 1‐vinylimidazole (VIDz) and 4‐vinyl pyridine (4VP). The graft copolymerization…
Abstract In the presence of Ln 3+ (Ln = La, Eu, Gd, Tb, Dy, Ho, Er, Tm or Lu), tris(2‐aminoethyl)amine condensed with three equivalents of 3‐(2′‐pyridyl)‐5‐ tert ‐butyl‐2‐hydroxybenzaldehyde in methanol to give the neutral Schiff‐base complex Ln III L (Ln = La 1 , Eu 2 , Gd 3 , Tb 4 , Dy 5 , Ho 6 , Er 7 , Tm 8 and Lu…
A novel high-frequency processing technology has been developed for automated fabrication of high quality carbon-fiber-reinforced plastics. The development has been assisted by extensive numerical simulations. The use of microwaves shows new approaches for the process interaction for the fiber materials, precursors, r…
Abstract Summary: A new diamine monomer containing a crown ether was made to react with commercial diacid chlorides and dianhydrides to yield new aromatic polyamides and polyimides. The crown ether moiety was introduced as a pendant group so that the polymers showed enhanced solubility in organic solvents, good therma…
The correlation between space charge accumulation and insulation failure has been investigated in four, polyethylene-based materials subjected to a DC field of 50 kV/mm. Two of the materials contained tree-retardant additives and all four materials were aged for extended periods up to 19,000 h. The specimens were remo…
The new orthorhombic meta-oxoborates RE(BO 2 ) 3 (≡REB 3 O 6 ) (RE = Dy-Lu) have been synthesized under high-pressure and high-temperature conditions in a Walker-type multianvil apparatus at 7.5 GPa and 1100 °C. They are isotypic to the known ambient pressure phase Tb(BO 2 ) 3 , space group Pnma. In contrast to Dy(BO…
Chitosan, poly-β-(1,4)-2-acetamido-2-deoxy-Đ-glucose ( N-deacetylated) was used as an adsorbent to adsorb the excess oil from oily wastewater. Chitosan is a biodegradable cationic biopolymer achieved by the extensive deacetylation of chitin obtained from prawn shell waste. Palm oil mill effluent (POME) is one of the m…