Moreover, electron microscope observations indicate that slight miscut (similar to 0.5 degrees) of the R-plane sapphire substrate almost completely suppresses the formation of twinning defects in the (11 (2) over bar6) GaN films. (C) 2010 American Institute of Physics. [doi :10.1063/1.3475521]“
“The comparison of the degree of crystallinity and the micromechanical properties in the blends of recycled amorphous poly(ethylene terephthalate) (PET) with isotactic polypropylene (iPP) and high-density polyethylene (HDPE) with a compatibilizer
in different proportions is reported. The physical study of the composites of the compatibilized blends and clay is also discussed. The analysis, performed by means of wide-angle X-ray scattering and www.selleckchem.com/products/pd-1-pd-l1-inhibitor-2.html differential scanning calorimetry techniques, permits us to describe, at microscale level, the role of the compatibilizer on the structure and microhardness of the polymer blends that we studied. The results reveal that PET was incompatible with both iPP and HDPE. However, the presence of the compatibilizer, a styrene ethylene/butylene Ulixertinib ic50 styrene block copolymer grafted with maleic anhydride, allowed the compatibilization of these polymers. In the PET/iPP blends, the
clay seemed to have a nucleating effect on the iPP and also induced a hardness increase in the compatibilized blends. On the other hand, in case of PET/HDPE, the crystallinity of these samples (pure blends, blends with compatibilizer, and blends with compatibilizer plus clay) only depended on their composition. Similarly to the PET/iPP blends, the addition of clay induced an increase in the hardness of the compatibilized find more blends. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 1278-1287, 2010″
“High-resolution
synchrotron radiation diffraction results indicate that the room temperature tetragonal (T) phase in (93-92)%Pb(Zn(1/3)Nb(2/3))O(3)-(7-8)%PbTiO(3) [PZN-(7-8)%PT] single crystals is a metastable phase stabilized by the transformation-cum-cooling stress in the crystal. This is manifested by the “”missing”" (001)(T) diffractions when the diffractions were taken from (001) fractured surfaces. The stress relaxation in this case has caused the metastable (001)(T) domains in the surface layer to transform to the equilibrium rhombohedral phase. Temperature and particle size effects on the metastable domains have been examined and discussed. Based on the present finding, a new PZN-PT phase diagram showing extended rhombohedral+tetragonal region is proposed. (C) 2010 American Institute of Physics. [doi:10.1063/1.3460804]“
“The effect of cellulases and beta-glucanases was evaluated for energy savings in the papermaking refining process. Two commercial enzyme preparations. Celluclast 1.