Effects of Catalysts in the Reactive Blending of Bisphenol A Polycarbonate with Poly(alkylene terephthalate)s

Collisional Properties of a Polarized Fermi Gas with Resonant Interactions

“…The parameter α depends on the mass ratio m ↓ /m ↑ and on the variable k F↑ a, where k F↑ is the Fermi momentum of the up-atoms. For equal masses, Monte Carlo calculations in the unitarity limit give α ≈ 0.6 [6,7,8], and for other mass ratios α has been evaluated in the ladder approximation [9] which, for equal masses, gives good agreement with the Monte Carlo results. It is found that α is an increasing function of m ↓ /m ↑ .…”

“…is, apart from a factor of π, the imaginary part of the Lindhard function, and the distribution functions are 5), the dashed line is low-velocity result (7) and the dotted line is the highvelocity result (8).…”

Influence of the Activity of Transesterification Catalysts on the Phase Behavior of PC-PET Blends

“…In a previous work [5,18] the effects of the catalysts and the mixing times on the chemical structure of PET/PC systems, obtained by reactive blending, were investiFull Paper: Samples of PC/PET blends, prepared by reactive blending in the presence of different catalysts, were analyzed by 1 H NMR and DSC, in order to evidence the effects of the transesterification reactions on the molecular structure and thermal properties. The 1 H NMR analysis evidences the formation of copolymers whose degree of randomness increases with the mixing time.…”

Density and Spin Response Function of a Normal Fermi Gas at Unitarity

“…In the polarized case a first useful description of the interaction effects is provided by the low x expansion of the equation of state. At unitarity the expansion takes the simple form e int = −(3/5)Aǫ F ↑ n ↓ with the value A ∼ 1 predicted by both Monte Carlo [5,15,16] and diagrammatic calculations [14] and where ǫ F ↑ is the concentration achievable in the absence of rotation. In the small x regime the relevant interaction parameter is…”

“…from the density modulations of the two spin components. In particular we will ignore effective mass effects which are predicted to be small in the polarized phase at unitarity [5,14,15,16]. According to the above assumption the relevant interaction terms can be derived from the interaction energy functional E int = dr e int (n ↑ , n ↓ ) .…”