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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61 citations
TL;DR: In this article, a mixture of O-carboxymethylated chitosan and alginate was coagulated in aqueous solution with 5 wt % CaCl2, and then by treating with 1 wt% HCl in order to obtain high tensile strength and low permeation.
Abstract: The blend membranes were satisfactorily prepared by coagulating a mixture of O-carboxymethylated chitosan (CM-chitosan) and alginate in aqueous solution with 5 wt % CaCl2, and then by treating with 1 wt % HCl aqueous solution. Their structure and miscibility were characterized by scanning electron micrograph, X-ray diffraction, infrared spectra, differential thermal analysis, and atomic absorption spectrophotometer. The results indicated that the blends were miscible, when the weight ratio of CM-chitosan to alginate was in the range from 1 : 1 to 1 : 5. The polymers interpenetration including a Ca2+ crosslinked bridge occurred in the blend membrane, and leads to high separation factor for pervaporation separation of alcohol/water and low permeation. The tensile strength in the wet state (σb = 192 kg cm−2 for CM-chitosan/alginate 1 : 1) and thermostability of the blend membranes were significantly superior to that of alginic acid membrane, and cellulose/alginate blend membranes, owing to a strong electrostatic interaction caused by —NH2 groups of CM-chitosan with —COOH groups of algic acid. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 610–616, 2000
61 citations
TL;DR: In this article, an endothermic heat of demixing and its concentration and temperature dependences were measured by DSC and extrapolated from these measurements and the results were interpreted in terms of the modified Flory's equation-of-state theory by Hamada et al. and compared with predictions of the directional specific interaction model of ten Brinke and Karasz.
Abstract: Amorphous blends of PMMA and PVC prepared by solution precipitation were found to be miscible over the entire composition range at temperatures below 180°C. An endothermic heat of demixing and its concentration and temperature dependences were measured by DSC. Spinodal and cloud point curves were extrapolated from these measurements and the results were interpreted in terms of the modified Flory's equation-of-state theory by Hamada et al. and compared with predictions of the directional specific interaction model of ten Brinke and Karasz.
61 citations
TL;DR: In this paper, a new polymeric solid electrolyte based on a PEO/PMVE-MAc blend, complexed with LiClO4, was obtained and characterized by differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), polarized light optical microscopy, electrochemical impedance and cyclic voltammetry.
61 citations
TL;DR: In this paper, the formation of a blend of polybenzimidazole (PBI) with poly(vinylidene fluoride-co-hexafluoro propylene) (PVDF-HFP) is confirmed by studying varieties of spectroscopic and thermodynamic techniques.
61 citations