Morphological change stability

If we predict morphological changes based on the analyses of interface states, on the R versus A/u/kT relations for the three models of growth mechanism, and on the morphological stability of interfaces, as discussed in Sections 3.2-3.9,... 

Establish the compatibility of the capsule shell and the capsule contents. Determine the hygroscopic nature of the capsule formulation. For example, a hygroscopic formulation (active ingredient and/or excipients) can pull water from the capsule shell, which could affect the Active ingredient—stability issues such as degradation and morphology changes... 

The high DS avoids the collapse of nanoparticles due to the prevention of hydrogen bond formation. The nanospheres in the aqueous suspension do not undergo any morphological changes even after 3 weeks storage. SEM images in Fig. 34 show the uniformity in size and shape and the stability of se-... 

Recent research at Bell Laboratories has shown that defect sites play a dominant role under some conditions. This conclusion is based on the discovery that stability enhancements ranging up to a factor of 9 can be produced by the prior reaction of PVC with a number of organo-tins (22,23,24,25). These enhancements are associated with the incorporation of only a few organotin ligands into the polymer (22, 23,24,25), and they cannot be ascribed to morphological changes since they are observed in solution (25) as well as in bulk (22,23,24,25). Several other possible explanations are excluded by the available facts, and it now seems that the stability enhancements must result from the chemical deactivation of defect structures (22,23,24,25). However, the reason for the residual instability of the modified polymers is not known at the present time (22,23). 

Flow of emulsions provides the best model for polymer blends, where the viscosity of both polymers is comparable. The microrheology of emulsions provides the best, predictive approach to morphological changes that take place during flow of polymer blends. The effect of emulsifiers on the drop size and its stability in emulsions has direct equivalence in the compatibilization effects in polymer blends. 

Under pressure grafting is one of the techniques for the incorporation of acid-base resistance, water repellancy, water absorbency, thermal stability and other morphological changes in the polysaccharides [42-44]. Under pressure. 

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