Crystallization induction time
WebApr 14, 2024 · Induction time of crystallization depends on the cooling rate. Investigations found that EVA will grow by the hang-wall model at the air-liquid contact line interface, or … WebAn induction period in chemical kinetics is an initial slow stage of a chemical reaction; after the induction period, the reaction accelerates. Ignoring induction periods can lead to …
Crystallization induction time
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WebAfter a temperature-dependent induction time, during stage 2 the Mg-ACC partially dehydrates and orders prior to its rapid (<5 min) crystallization to non-stoichiometric proto-dolomite. This occurs via the dissolution of Mg-ACC, followed by the secondary nucleation of proto-dolomite from solution. WebAug 7, 2024 · Crystallization induction time was evaluated using a UV-2501 PC UV-VIS (Shimadzu, Kyoto, Japan) spectrophotometer connected to a CPS-240A thermoelectrically temperature controlled cell holder (Shimadzu). In particular, aliquots of 2 mL of molten oleogel (heating above melting point at least 10 min) were poured into disposable plastic …
WebJan 25, 2024 · In other words, a PP ball reduced the induction time of form II nucleation from over 800 s to 562 ± 103 s. These results demonstrate that the presence of a plastic ball in aqueous acetaminophen solution undergoing ultrasonic irradiation effectively increases the probability and reduces the induction time of form II crystallization. WebAug 30, 2024 · A study of the dependence of induction time on the supersaturation (Fig. 4.3, Table 4.8) revealed that the curves are nonlinear and can be divided into three …
WebOne study was found which observed agitated solutions at similar supersaturations and temperatures, and it can be seen that for antisolvent crystallization, at a supersaturation … WebApr 29, 2024 · The time–temperature superposition of PEEK 450G; the frequency-scale shift factor (a T) and modulus-scale shift factor (b T); time–temperature protocol to monitor the isothermal crystallization induction time; an illustration to define crystallization induction time; the rheological induction times obtained at T c = 322. 325, and 328 °C ...
WebIn this work, new Ge-containing Fe-based nanocrystalline alloys with the composition of Fe80.2Si3B12-xP2Nb2Cu0.8Gex (x = 0, 1, 2 at.%) were developed, and the effects of Ge content on the magnetic and crystallization processes of the alloys were investigated. The addition of Ge extends the annealing window of the present Fe-based alloys, which …
WebApr 8, 2024 · In addition, PASP-Pro exhibited a promising anti-scaling property by inhibiting the crystallization of CaCO 3; the induction period and the nucleation period of the CaCO 3 crystallization process were prolonged nearly four times. It was found from XRD patterns that vaterite, an unstable crystalline phase, gradually emerged with the addition of ... northeastern pacificWebMay 3, 2013 · Smejkal et al. 6 found that the induction time for crystallization of lysozyme in a stirred crystallizer was substantially shorter compared to an experiment in a nonagitated microbatch. how to restrict text input in htmlWebThe crystallization of gypsum was carried out under simulated conditions of phosphoric acid production by the dihydrate process. Calcium hydrogen phosphate and sulfuric acid were mixed with dilute phosphoric acid at 80 °C, and the turbidity of the reaction mixture was measured at different time periods to calculate the induction time of gypsum ... northeastern owaWebJul 1, 1994 · Induction time for crystal growth, unlike the induction time for nucleation, becomes unbounded if defined rigorously. Recently, Deubener et. al. [1] have argued … northeastern package deliveryWebMar 1, 2024 · The induction time during crystallization process is the time between a supersaturated solution reaching to the onset of nucleation [4]. Therefore, the … how to restrict tagging on facebookWebApr 14, 2024 · Induction time of crystallization depends on the cooling rate. Investigations found that EVA will grow by the hang-wall model at the air-liquid contact line interface, or by extrude-bubble growth at any site on the liquid surface in a beaker by supersaturation formation. Rapid EVA crystallization was interpreted as the introduction of space ... northeastern pa alliance nepaWebJan 3, 2024 · The temperature dependence of the crystallization induction time (τ 0 (T)) is a function of the thermodynamic activation barrier and the frequency of “attempted jumps” (1/τ α (T)) to overcome the barrier. Even … northeastern owl calls