Impacts of Polymeric Additives on Nucleation and Crystal Growth of Indomethacin from Supersaturated Solutions

2019 ◽  
Vol 20 (5) ◽  
Author(s):  
Hui Cheng ◽  
Liang Mao ◽  
Shuai Zhang ◽  
Huixia Lv
Keyword(s):  
Crystal Growth ◽  
Polymeric Additives ◽  
Supersaturated Solutions

The Inhibition of Calcium Carbonate Formation in Aqueous Supersaturated Solutions, Spontaneous Precipitation and Seeded Crystal Growth

2005 ◽  
pp. 123-137 ◽  
Author(s):  
Pavlos G. Klepetsanis ◽  
Angeliki Kladi ◽  
Terje Ostvold ◽  
Christos G. Kontoyiannis ◽  
Petros G. Koutsoukos ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Calcium Carbonate ◽  
Carbonate Formation ◽  
Supersaturated Solutions

scholarly journals Crystallization of nanoparticles induced by precipitation of trace polymeric additives

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yiwen Qian ◽  
Alessandra da Silva ◽  
Emmy Yu ◽  
Christopher L. Anderson ◽  
Yi Liu ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Evaporation Rate ◽  
Crystallization Process ◽  
High Yield ◽  
Dilute Solutions ◽  
Guided Growth ◽  
Cohesive Energy Density ◽  
Kinetic Growth ◽  
Multiple Length Scales ◽  
Polymeric Additives

AbstractOrthogonal to guided growth of nanoparticle (NP) crystals using DNA or supramolecules, a trace amount of polymeric impurities (<0.1 wt.%) leads to reproducible, rapid growth of 3D NP crystals in solution and on patterned substrates with high yield. When polymers preferentially precipitate on the NP surfaces, small NP clusters form and serve as nuclei for NP crystal growth in dilute solutions. This precipitation-induced NP crystallization process is applicable for a range of polymers, and the resultant 3-D NP crystals are tunable by varying polymeric additives loading, solvent evaporation rate, and NP size. The present study elucidates how to balance cohesive energy density and NP diffusivity to simultaneously favor nuclei formation energetically and kinetic growth in dilute solutions to rapidly crystalize NPs over multiple length scales. Furthermore, the amount of impurities needed to grow NP crystals (<0.1%) reminds us the importance of fine details to interpret experimental observations in nanoscience.

scholarly journals An automatic system for crystal growth studies at constant supersaturation

1992 ◽  
Vol 14 (5) ◽  
pp. 177-180
Author(s):  
J. G. March ◽  
A. Costa-Bauzá ◽  
F. Grases ◽  
O. Söhnel
Keyword(s):  
Crystal Growth ◽  
Calcium Oxalate ◽  
Data Acquisition ◽  
Automatic System ◽  
Growth Studies ◽  
Kinetics Of ◽  
Supersaturated Solutions ◽  
Kinetics Of Crystal Growth

An automatic system for growing crystals from seeded supersaturated solutions at constant supersaturation is described. Control of burettes and data acquisition are controlled by computer. The system was tested with a study of the calcium oxalate kinetics of crystal growth.

Experimental constraints on illite crystal morphology

Clay Minerals ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 587-597 ◽  
Author(s):  
A. Bauer ◽  
B. Velde ◽  
R. Gaupp
Keyword(s):  
Growth Rate ◽  
Crystal Growth ◽  
Crystal Morphology ◽  
Slow Growth ◽  
Crystal Form ◽  
Slow Growth Rate ◽  
Natural Minerals ◽  
Hexagonal Form ◽  
Supersaturated Solutions ◽  
Stable Shape

AbstractObservations of natural minerals and experimental run products show that I-S (illitesmectite mixed-layer minerals) with a high illite content as well as pure mica-illite crystallites can have a lath shape (aspect ratio >3). This shape is common to the I-S minerals under a variety of conditions of formation. The experiments presented indicate that the occurrence of lath-shaped micaillite is due to a slow growth rate from supersaturated solutions. This lath-shaped crystallite is metastable as the ultimate stable shape is hexagonal. A longer period of crystal growth will replace the mica-illite laths with crystallites of a hexagonal form. Thus the presence of lath-shaped micaillite indicates the existence of a metastable crystal form for this mineral.

On the Theory of the Nonstationary Spherical Crystal Growth in Supercooled Melts and Supersaturated Solutions

2019 ◽  
Vol 2019 (8) ◽  
pp. 787-794 ◽  
Author(s):  
D. V. Alexandrov ◽  
I. V. Alexandrova ◽  
A. A. Ivanov ◽  
A. P. Malygin ◽  
I. O. Starodumov ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Spherical Crystal ◽  
Supersaturated Solutions
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