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Dynamic viscoelastic measurements were combined with differential scanning calorimetry (DSC) and atomic force microscopy (AFM) analysis to investigate the rheology, phase structure, and morphology of poly(l-lactide) (PLLA), poly(ε-caprolactone) (PCL), poly(d,l-lactide) (PDLLA) with molar composition l-LA/d-LA = 53:47, and poly(l-lactide-co-ε-caprolactone) (PLAcoCL) with molar composition l-LA/CL =...
The effect of temperature and soluble solids concentration on density, coefficient of thermal expansion and viscosity of clear grape juices from Mendoza, Argentina, collected during 1999 and 2001, was studied. The juice was obtained from different sections of a commercial evaporator at concentrations ranging from 22.9–70.6°Brix. The properties were measured between 20°C and 80°C, in 10°C increments...
Dynamic and steady state flow measurements and shrinkage experiments have been carried out to investigate the influence of blend composition on viscous and elastic properties of a new type of polyolefin: high density polyethylenes of high and low molecular weight obtained via metallocene catalysts. The polyethylenes are characterized by narrow molecular weight distribution and absence of branching...
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