Topic
Miscibility
About: Miscibility is a research topic. Over the lifetime, 5521 publications have been published within this topic receiving 133547 citations. The topic is also known as: miscible.
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TL;DR: In this paper, the viscosity behavior of collagen, chitosan and their blends at several compositions (2/8, 4/6, 5/5, 6/4, 8/2) has been studied.
44 citations
TL;DR: In this paper, the authors derived dimensionless equilibrium constants describing the selfassociation of the hexafluoro-2-phenyl-2propanol (HFPP) group from IR spectroscopic data.
Abstract: Dimensionless equilibrium constants describing the self-association of the hexafluoro-2-phenyl-2-propanol (HFPP) group have been determined from IR spectroscopic data. Corresponding values of these equilibrium constants for polymers containing the p-(hexafluoro-2-hydroxy-2-propyl)styrene (HFPS) group were calculated by taking into account differences in the molar volume of the model and what we define as the «specific repeat» of the polymer. Equilibrium constants describing the interassociation of HFPS with methacrylate and acetoxy groups were obtained from spectroscopic data
44 citations
TL;DR: In this article, the authors used a simple Flory-Huggins mixing model to extract an interaction parameter of the form χ(x1,x2,T)=A(x 1,x 2)/T, where for given x 1, x 2, A is a constant.
Abstract: We have used composition depth profiling of polymer bilayers, based on nuclear reaction analysis, to determine miscibility, phase coexistence, and critical temperatures in mixtures of random olefinic copolymers of mean composition E1−x/EEx; here E is the ethylene group −(C4H8)−, EE is the ethylethylene group −[C2H3(C2H5)]−, and one of the copolymers is partially deuterated. The components in each binary mixture have different values x1,x2 of the EE fraction. Using a simple Flory–Huggins mixing model, our results enable us to extract an interaction parameter of the form χ(x1,x2,T)=A(x1,x2)/T, where for given x1,x2, A is a constant. Calculated binodals using this form fit our measured coexistence curves well, while allowing χ a weak composition dependence improves the fit further. Within the range of our parameters, our results suggest that in such binary polyolefin mixtures the interaction parameter increases roughly linearly with the extent of chemical mismatch expressed as the difference in degree of eth...
44 citations
44 citations
TL;DR: The effect of polymer structure on blend miscibility with polyvinylphenol (PVPh) has been studied for at least one polymer from a variety of polymer classes with potential hydrogen-bond accepting groups as mentioned in this paper.
Abstract: The effect of polymer structure on blend miscibility with polyvinylphenol (PVPh) has been studied for at least one polymer from a variety of polymer classes with potential hydrogen-bond accepting groups: polyesters (aliphatic and aromatic), polycarbonates, polyimides, polyamides, polysulfones, polyurethanes, polyethers, polysiloxanes, poly(amideimides), and cellulose esters. Many of the polyesters, polyamides, and cellulose esters showed evidence of interaction and miscibility with PVPh. In most of the other cases, there was no sign of miscibility. Generally good correlation exists between thermal behavior and infrared spectral data. Where there is significant interaction seen between the polymers by FTIR, substantial miscibility is seen by DSC analysis. In some cases, the phase behavior depended on the blend preparation scheme. © 1994 John Wiley & Sons, Inc.
44 citations