Structure high pressure effects

Ezaki, S. and Hayashi, R. High pressure effects on starch structural change and retrogradation. High Press. Biotechnol, 224,163,1992. 

Mozhaev, V.V., Heremans, K., Frank, J., Masson, P., Balny, C. High-pressure effects on protein structure and function, Proteins. 24 (1996) 81-91. 

P. F. McMillan and M. C. Wilding, High pressure effects on liquid viscosity and glass Uansition behaviour, polyamorphic phase UansiUons and structural properties of glasses and liquids, J Non-Cryst. Sollds355, 722-732 (2009). 

Previously, the same author [52] reported that compounds containing the tricoordinated sulfur cation, such as the triphenylsulfonium salt, worked as effective initiators in the free radical polymerization of MMA and styrene [52]. Because of the structural similarity of sulfonium salt and ylide, diphenyloxosulfonium bis-(me-thoxycarbonyl) methylide (POSY) (Scheme 28), which contains a tetracoordinated sulfur cation, was used as a photoinitiator by Kondo et al. [63] for the polymerization of MMA and styrene. The photopolymerization was carried out with a high-pressure mercury lamp the orders of reaction with respect to [POSY] and [MMA] were 0.5 and 1.0, respectively, as expected for radical polymerization. 

It has been shown that ab initio total energy DFT approach is a suitable tool for studies of phase equilibria at low temperatures and high pressures even when small energy differences of the order of 0.01 eV/mol are involved. The constant pressure optimization algorithm that has been developed here allows for the calculation of the equation of state for complex structures and for the study of precursor effects related to phase transitions. 

Pressures above 1 to 2 psia have small effects on HETP for random and structured packing. For high vacuum the data are not totally firm as to the consistency of effects, generally HETP increases (efficienq becomes lower). At high pressure above 200-300 psia structured packing HETP increases (lower efficiency) [90]. 

Blanken, W. M., Bergh, M. L. E., Koppen, P. L., and van den Eijnden, D.H., High-pressure liquid chromatography of neutral oligosaccharides effects of structural parameters, Anal. Biochem., 145, 322, 1985. 

---