Crystal growth rates and master curves of poly(ethylene succinate) and its copolyesters using a nonisothermal method

2010 ◽  
Vol 48 (9) ◽  
pp. 932-939 ◽  
Author(s):  
Chia-Jung Tsai ◽  
Ming Chen ◽  
Hsin-Ying Lu ◽  
Wei-Che Chang ◽  
Chi He Chen
Keyword(s):  
Crystal Growth ◽  
Growth Rates ◽  
Master Curves ◽  
Poly Ethylene ◽  
Nonisothermal Method

Comparison of copper sulphate pentahydrate growth rates determined by different methods

1990 ◽  
Vol 55 (7) ◽  
pp. 1691-1707 ◽  
Author(s):  
Miloslav Karel ◽  
Jiří Hostomský ◽  
Jaroslav Nývlt ◽  
Axel König
Keyword(s):  
Growth Rate ◽  
Crystal Growth ◽  
Fluidized Bed ◽  
Growth Rates ◽  
Copper Sulphate ◽  
Crystal Growth Rate ◽  
Effect Of Temperature ◽  
Rotating Disc ◽  
Shape Factors ◽  
Data Treatment

Crystal growth rates of copper sulphate pentahydrate (CuSO4.5 H2O) determined by different authors and methods are compared. The methods included in this comparison are: (i) Measurement on a fixed crystal suspended in a streaming solution, (ii) measurement on a rotating disc, (iii) measurement in a fluidized bed, (iv) measurement in an agitated suspension. The comparison involves critical estimation of the supersaturation used in measurements, of shape factors used for data treatment and a correction for the effect of temperature. Conclusions are drawn for the choice of values to be specified when data of crystal growth rate measurements are published.

Kinetics of the Crystallization of Potassium Sulfate

1993 ◽  
Vol 58 (8) ◽  
pp. 1848-1854 ◽  
Author(s):  
Miroslav Karel ◽  
Jaroslav Nývlt
Keyword(s):  
Experimental Data ◽  
Crystal Growth ◽  
Growth Rates ◽  
Potassium Sulfate ◽  
Kinetics Of

The kinetics of the crystallization of potassium sulfate has been determined using the MSMPR technique. Values of the nucleation and crystal growth rates evaluated from the experimental data are compared with the corresponding literature data.

scholarly journals Crystal growth rates in polar firn

1993 ◽  
Vol 18 ◽  
pp. 208-210
Author(s):  
Hitoshi Shoji ◽  
Atau Mitani ◽  
Kohji Horita ◽  
Chester C. Langway
Keyword(s):  
Growth Rate ◽  
Plastic Deformation ◽  
Crystal Growth ◽  
Growth Rates ◽  
Strain Field ◽  
Crystal Size ◽  
Ice Core ◽  
Transformation Process ◽  
Ice Crystals ◽  
Air Bubbles

Continuous crystal-size measurements made on the G6 Antarctic ice core (100m deep) show enhanced growth rates above a depth of 30 m (Zone 1) and in the interval between 70 and 80 m (Zone 2). Crystal growth in Zone 1 most probably takes place by a process of sublimation and condensation. The higher growth rate in Zone 2 is most probably related to the pore close-off transformation process in which a non-uniform strain field is created to form air bubbles by plastic deformation and “cannibalization” of individual ice crystals.

Crystal growth rates of tricaprin and trilaurin under high pressures

1998 ◽  
Vol 191 (4) ◽  
pp. 827-833 ◽  
Author(s):  
Chiaki Yokoyama ◽  
Yuichi Tamura ◽  
Yoshiyuki Nishiyama
Keyword(s):  
Crystal Growth ◽  
Growth Rates ◽  
High Pressures

Poly(ethylene) oxide for small-molecule crystal growth in gelled organic solvents

2011 ◽  
Vol 44 (1) ◽  
pp. 172-176 ◽  
Author(s):  
Duane Choquesillo-Lazarte ◽  
Juan Manuel García-Ruiz
Keyword(s):  
Crystal Growth ◽  
Ethylene Oxide ◽  
Small Molecules ◽  
Organic Solvents ◽  
Small Molecule ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

The use of poly(ethylene) oxide (PEO) as a gelator has been evaluated with a selected list of organic solvents. From the 26 solvents tested, eight formed gel matrices. This number was extended to 19 when poly(ethylene) oxide was used with a mixture of solvents. The procedure for the preparation of PEO organogels is described, and their application for the crystallization of small molecules using different crystallization techniques in the presence of organic solvents is discussed.

scholarly journals Crystal growth rates in supercooled atomic liquid mixtures

2020 ◽  
Vol 19 (5) ◽  
pp. 512-516 ◽  
Author(s):  
Alexander Schottelius ◽  
Francesco Mambretti ◽  
Anton Kalinin ◽  
Björn Beyersdorff ◽  
Andre Rothkirch ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Growth Rates ◽  
Liquid Mixtures

scholarly journals Crystal-plane-dependent effects of antifreeze glycoprotein impurity for ice growth dynamics

2019 ◽  
Vol 377 (2146) ◽  
pp. 20180393 ◽  
Author(s):  
Yoshinori Furukawa ◽  
Ken Nagashima ◽  
Shunichi Nakatsubo ◽  
Salvador Zepeda ◽  
Ken-ichiro Murata ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Growth Rates ◽  
Space Station ◽  
Supercooled Water ◽  
Normal Growth ◽  
Crystal Plane ◽  
Impurity Effect ◽  
Crystal Formation ◽  
Ice Crystal ◽  
Antifreeze Glycoprotein

An impurity effect on ice crystal growth in supercooled water is an important subject in relation to ice crystal formation in various conditions in the Earth's cryosphere regions. In this review, we consider antifreeze glycoprotein molecules as an impurity. These molecules are well known as functional molecules for controlling ice crystal growth by their adsorption on growing ice/water interfaces. Experiments on free growth of ice crystals in supercooled water containing an antifreeze protein were conducted on the ground and in the International Space Station, and the normal growth rates for the main crystallographic faces of ice, namely, basal and prismatic faces, were precisely measured as functions of growth conditions and time. The crystal-plane-dependent functions of AFGP molecules for ice crystal growth were clearly shown. Based on the magnitude relationship for normal growth rates among basal, prismatic and pyramidal faces, we explain the formation of a dodecahedral external shape of an ice crystal in relation to the key principle governing the growth of polyhedral crystals. Finally, we emphasize that the crystal-plane dependence of the function of antifreeze proteins on ice crystal growth relates to the freezing prevention of living organisms in sub-zero temperature conditions. This article is part of the theme issue ‘The physics and chemistry of ice: scaffolding across scales, from the viability of life to the formation of planets’.

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