Topic
Differential scanning calorimetry
About: Differential scanning calorimetry is a research topic. Over the lifetime, 50315 publications have been published within this topic receiving 1152335 citations. The topic is also known as: DSC.
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TL;DR: A series of blends of the biodegradable polymers poly(D,L-lactic acid) and poly( epsilon -caprolactone) were prepared by varying mass fraction across the range of compositions.
Abstract: A series of blends of the biodegradable polymers poly(D,L-lactic acid) and poly( epsilon -caprolactone) were prepared by varying mass fraction across the range of compositions. Tensile testing was performed at room temperature using an extensometer and the elastic modulus was calculated for each blend. The blends were also tested to failure, and the strain-at-failure and yield stress recorded. While the blend has been shown to have a lower critical solution temperature, the mechanical properties were insensitive to the annealing conditions. Scanning electron microscopy was used to characterize the blend microstructure and poor adhesion was observed at the interface between blend components. Differential scanning calorimetry was performed but the results were somewhat variable, indicating this blend may have complex phase behavior that depends sensitively on the method of preparation. However, nuclear magnetic resonance data indicate the two components are phase separated. A percolation model is used to explain the observed mechanical data and the results are consistent with the predictions of the Kerner-Uemura-Takayangi model. The results of these experiments demonstrate the utility of polymer blending in tuning material properties.
292 citations
TL;DR: The solid-state drug-polymer solubility affects the nanoparticle characteristics, and thus could be used as an important preformulation parameter for drug delivery applications.
291 citations
TL;DR: In this article, the effect of small amounts of oxygen (0.28-0.6 ǫ at) on phase formation and the thermal stability of bulk samples of the Zr 65 Al 7.5 Cu 17.c.
291 citations
TL;DR: The effect of temperature on the crystallization behavior of amylose-lipid complexes from dilute solution has been investigated by differential scanning calorimetry, X-ray diffraction, and structural analysis using alpha amylase etching-gel permeation chromatography, as well as birefringence, density, and dynamic rheological measurements as discussed by the authors.
291 citations
TL;DR: Differential scanning calorimetry and dynamic mechanical analysis were used to study low moisture (10−50%) gelatinized cornstarch in order to understand the severe embrittlement on aging often seen in these systems.
291 citations