Crystallization induction time
WebFeb 6, 2024 · In contrast, a low precipitant concentration results in long crystallization induction time, less crystal nucleation, and slow growth rate . In order to obtain perfect crystals, scientists have also explored various crystallization methods, such as the use of microgravity [ 16 ] or an electromagnetic field [ 17 , 18 ]. 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.
Crystallization induction time
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WebThe induction time distribution is explained by the stochastic nature of nucleation if the number of nuclei formed is approaching 1 per vial. Accurate heterogeneous crystal … WebAfter a temperaturedependent induction time, during stage 2 the Mg-ACC partially dehydrates and orders prior to its rapid (<5 min) crystallization to non-stoichiometric protodolomite. This occurs via the dissolution of Mg-ACC, followed by the secondary nucleation of proto-dolomite from solution. The proto-dolomite crystallization...
WebA relation between induction time and metastable zone width in cooling crystallization has been developed based on the correlation between temperature and supersaturation with … WebMar 1, 2024 · The induction time during crystallization process is the time between a supersaturated solution reaching to the onset of nucleation [4]. Therefore, the …
WebApr 11, 2024 · In absence of Mel, the induction time was approximately 12.6 times higher than at the highest level of Mel studied, suggesting that Mel acts as a promoter for UA crystallization. The decrease in induction time with increasing melamine concentration can be attributed to the UA–melamine interactions at the molecular levels. 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 …
WebJun 14, 2024 · Precipitation generally refers to a relatively rapid formation of a sparingly soluble crystalline – or sometimes amorphous – solid phase from a liquid solution phase. Precipitation is rather poorly understood when compared with crystallization of more soluble materials. It generally involves the simultaneous and rapid occurrence of ...
WebIt can be measured experimentally to describe the time required for the formation of an observable change in the crystallization system from the starting point of supersaturation. Figure 5 shows the induction time measurement of AM in WSC solution. The concentration of AM in the water rapidly decreased for one minute due to the crystal nuclei ... orbey tourismeWebAug 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 … ipo listed in 2023WebNov 24, 2024 · The observed induction time for seeded gypsum crystallization was investigated with respect to gypsum particle seed size and mass loading. The induction … orbey vacationsWebApr 3, 2024 · Its crystallization induction time (λ) was long (~123 min), this being followed by a rapid crystallization rate (μ ~ 1.7%/min) before reaching an SFC plateau of 21% (Table 4). The sigmoidal curves indicated that no TAG crystallized until a sufficient number of stable nuclei were formed, followed by a period of rapid crystallization initiated ... orbeys acostaWebJul 2, 2024 · Adding FHPKO to CBS increased the crystallization rate with a decrease in crystallization induction time but did not increase the heat resistance. In contrast, all KSF-CBS blends exhibited higher heat resistance than CBS and crystallized into β' form, a preferred polymorph for fats used in compound chocolate. orbey vvf vacancesipo listed todayWebAug 28, 2013 · An approximation of the crystallization rate can be made by the overall crystallization rate , where (half the crystallization time) is the time at which approaches the value of 50%. This parameter is proportional to both the primary nucleation rate and the crystal/spherulite growth [].The induction time , that is, the time at which starts to … orbey village vacances