Effect of high pressure on relaxation dynamics and crystallization kinetics of chiral liquid crystal in its smectic phase

2021 ◽  
Author(s):  
Anna Drzewicz ◽  
Małgorzata Jasiurkowska-Delaporte ◽  
Ewa Juszyńska-Gałązka ◽  
Mirosław Gałązka ◽  
Wojciech Zając ◽  
...  
Keyword(s):  
High Pressure ◽  
Liquid Crystal ◽  
Crystallization Kinetics ◽  
Crystallization Process ◽  
Smectic Phase ◽  
Relaxation Dynamics ◽  
Chiral Liquid Crystal ◽  
The Impact ◽  
Kinetics Of

The impact of high pressure on relaxation dynamics and the crystallization process in the smectic phase with antiferroelectric properties ( phase) of novel liquid crystal was studied.

scholarly journals Morphology and crystallization kinetics of Rubber-modified Nylon 6 Prepared by Anionic In-situ Polymerization

2020 ◽  
Vol 27 (1) ◽  
pp. 204-215
Author(s):  
Hongkai Zhao ◽  
Dengchao Zhang ◽  
Yingshuang Li
Keyword(s):  
Crystallization Kinetics ◽  
In Situ Polymerization ◽  
Good Description ◽  
Nylon 6 ◽  
Avrami Equation ◽  
Infrared Analysis ◽  
Chain Segment ◽  
The Impact ◽  
Kinetics Of

AbstractIn this work, we modified nylon 6 with liquid rubber by in-situ polymerization. The infrared analysis suggested that HDI urea diketone is successfully blocked by caprolactam after grafting on hydroxyl of HTPB, and the rubber-modified nylon copolymer is generated by the anionic polymerization. The impact section analysis indicated the rubber-modified nylon 6 resin exhibited an alpha crystal form.With an increase in the rubber content, nylon 6 was more likely to generate stable α crystal. Avrami equation was a good description of the non-isothermal crystallization kinetics of nylon-6 and rubber-modified nylon-6 resin. Moreover, it is found that the initial crystallization temperature of nylon-6 chain segment decreased due to the flexible rubber chain segment. n value of rubber-modified nylon-6 indicated that its growth was the coexistence of two-dimensional discoid and three-dimensional spherulite growth. Finally, the addition of the rubber accelerated the crystallization rate of nylon 6.

Chiral Liquid Crystal Trimer Exhibiting an Optically Uniaxial Smectic Phase with a Double-Peak Polarization

2012 ◽  
Vol 116 (15) ◽  
pp. 8678-8687 ◽  
Author(s):  
Daiki Tsuji ◽  
Yoichi Takanishi ◽  
Jun Yamamoto ◽  
Atsushi Yoshizawa
Keyword(s):  
Liquid Crystal ◽  
Smectic Phase ◽  
Double Peak ◽  
Chiral Liquid Crystal

The mechanism of structural changes and crystallization kinetics of amorphous red phosphorus to black phosphorus under high pressure

2019 ◽  
Vol 55 (56) ◽  
pp. 8094-8097 ◽  
Author(s):  
Heng Xiang ◽  
Yuting Nie ◽  
Hechuang Zheng ◽  
Xuhui Sun ◽  
Xueliang Sun ◽  
...  
Keyword(s):  
High Pressure ◽  
Crystallization Kinetics ◽  
Structural Changes ◽  
Black Phosphorus ◽  
Crystallization Mechanism ◽  
Red Phosphorus ◽  
Kinetics Of

Revealing the untraditional crystallization mechanism of amorphous red phosphorus to black phosphorus under high pressure.

Effect of High Pressure on Crystallization Kinetics of van der Waals Liquid: An Experimental and Theoretical Study

2014 ◽  
Vol 14 (5) ◽  
pp. 2097-2104 ◽  
Author(s):  
Karolina Adrjanowicz ◽  
Andrzej Grzybowski ◽  
Katarzyna Grzybowska ◽  
Jürgen Pionteck ◽  
Marian Paluch
Keyword(s):  
High Pressure ◽  
Crystallization Kinetics ◽  
Theoretical Study ◽  
Van Der Waals ◽  
Kinetics Of

Crystallization of Amorphous Ribbon in NiTi-Cu Shape Memory Alloy

1997 ◽  
Vol 481 ◽  
Author(s):  
F. Yang ◽  
J. L. Ma ◽  
Z. J. Pu ◽  
K. H. Wu
Keyword(s):  
Shape Memory ◽  
Crystallization Kinetics ◽  
System Analysis ◽  
Crystallization Process ◽  
Amorphous Material ◽  
Amorphous Ribbon ◽  
Continuous Heating ◽  
Isothermal Model ◽  
Heating Mode ◽  
Kinetics Of

ABSTRACTThe objective of this work is to study the crystallization process of the amorphous ribbon of NiTi-Cu based shape memory alloys. An amorphous material with a composition of Ti50Ni25Cu25 was used to conduct this study. First, a study was conducted to understand the crystallization kinetics of this amorphous material at the isothermal model and continuous heating mode, respectively. The characteristic parameters associated with the crystallization process, such as the start and finish time for isothermal crystallization, the peak temperature for continuous heating crystallization, and activation energy, are obtained. Based on the study of experimental data of crystallization kinetics, a series of isothermal annealing experiments was conducted to study the crystallization process and microstructure of fully crystallized materials. The TEM micrograph shows the crystal phase growths in the amorphous matrix as a perfect geometric sphere. A system analysis was conducted to explain the crystallization micro-mechanism.

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