Interface distribution function Subject

The S parameter is a function of the segment density distribution of the stabilizing chains. The conformation, and hence the segment density distribution function of polymers at interfaces, has been the subject of intensive experimental and theoretical work and is a subject of much debate (1). Since we are only interested in qualitative and not quantitative predictions, we choose the simplest distribution function, namely the constant segment density function, which leads to an S function of the form (11) ... 

The theory presented here was the basis for the investigations dealing with numerous problems coimected with adsorption from binary solutions the determination of energy distribution function from the excess adsorption isotherms [154,215], the role of adsorbent heterogeneity and molecular interactions in the adsorption process at Uquid-solid interface [202,203,216-219], the influence of the difference in molecular sizes of components on the adsorption equilibrium [212,220,221], the multilayer effects in adsorption from solutions [222-225], the relations between heats of immersion and excess adsorption isotherms [216,219,225], and many other interesting subjects. 

The microductile/compliant layer concept stems from the early work on composite models containing spherical particles and oriented fibers (Broutman and Agarwal, 1974) in that the stress around the inclusions are functions of the shear modulus and Poisson ratio of the interlayer. A photoelastic study (Marom and Arridge, 1976) has proven that the stress concentration in the radial and transverse directions when subjected to transverse loading was substantially reduced when there was a soft interlayer introduced at the fiber-matrix interface. The soft/ductile interlayer allowed the fiber to distribute the local stresses acting on the fibers more evenly, which, in turn, enhanced the energy absorption capability of the composite (Shelton and Marks, 1988). 

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