Couchman

The equations of electrocapillarity become complicated in the case of the solid metal-electrolyte interface. The problem is that the work spent in a differential stretching of the interface is not equal to that in forming an infinitesimal amount of new surface, if the surface is under elastic strain. Couchman and co-workers [142, 143] and Mobliner and Beck [144] have, among others, discussed the thermodynamics of the situation, including some of the problems of terminology. 

Cottrell equation Cottrell unit Couchman equation Couette flow Couette viscometers Cough drops Coughlozenges... 

Couchman, J.R., Rees, D.A. (1979). The behavior of fibroblasts migrating from chick heart explants Changes in adhesion, locomotion and growth, and in the distribution of actomyosin and fi-bronectin. J. Cell Sci. 39, 149-165. 

Dunlevy, J.R., Couchman. J.R. (1993). Controlled induction of focal adhesion disassembly and migration in primary fibroblasts. J. Cell Sci. 105,489-500. 

Brown RL, Pollock AN, Couchman KG, Hodges M, Hutchinson DO, Waa-ka R et al. A novel ryanodine receptor mutation and genotype-phenotype correlation in a large malignant hyperthermia New Zealand Maori pedigree. Hum Mol Genet 2000 9[10] 1515-1524. 

Erickson, A. C., and Couchman, J. R. (2000). Still more complexity in mammalian basement membranes. J. Histochem. Cytochem. 48,1291-1306. 

Acquisitions Editor Rolla Couchman Developmental Editor Heather Krehling Publishing Services Manager Frank Polizzano Design Direction Karen O Keefe Owens Cover Photo by Rebecca Brodwick... 

My thanks to Heather Krehling and Rolla Couchman foryour patience and encouragement (and cheesesteak )... 

By developing a model based on the arguments given by Goldstein [171], Painter et al. [172] modified the Couchman equation [173] as follows ... 

A different approach to obtaining an expression to describe the Tg vs x relationship has been proposed by Pascault and Williams (1990). Their derivation is based on an expression obtained by Couchman (1987) to express the Tg of a solution with randomly mixed components ... 

The foam processing window of the blend systems is also controlled by the glass transition temperature of the blend phases. With regard to the neat blend system, the addition of PS continuously lowers the glass transition temperature of the PPE/PS phase, as predicted by the Couchman equation [77] (Fig. 25). For the carbon dioxide-laden case, the plastifying effect needs to be taken into account, which lowers the glass transition temperature of both PPE/PS and SAN. 

For the PPE/PS phase, the previously described Chow equation can be combined with the Couchman equation to estimate the Tg as a function of the blend composition. The results are highlighted in Fig. 25. For the prediction, the heat capacity and the molar mass of the repeat unit of the PPE/PS blends is regarded to scale linearly with the mass content of the blend partners, and a constant lattice coordination number of z = 2 is used [75]. While the addition of PS to PPE allows one to reduce continuously the Tg in presence of carbon dioxide, the plasticization effect is less pronounced, mainly driven by the decreasing solubility via addition of PS. 

Fig. 25 Glass transition temperature of PPE/PS blends in absence and presence of carbon dioxide, as calculated by the Couchman equation [77] and by the Chow equation [75]...

Couchman PR (1987) Thermodynamics and the compositional variation of glass-transition temperatures. Macromolecules 11 1156-1161... 

S Encinas, KL Bushell, SM Couchman, JC Jeffery, MD Ward, L Flamigni, F Barigelletti. J Chem Soc Dalton Trans 1783, 2000. 

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