Research and Characterization of Liquid Crystal Polymers

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Analysis and Characterization".

Deadline for manuscript submissions: closed (5 March 2023) | Viewed by 2149

Special Issue Editor


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Guest Editor
Institute of Advanced Electronic Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
Interests: liquid crystal polymers; synthesis and characterization; dynamic chemistry; stimuli-responsive polymers

Special Issue Information

Dear Colleagues,

Liquid crystal polymers (LCPs) are of intense interest due to their unique anisotropic shape-changing and mechanical properties based on order–disorder transition. Their fascinating properties, such as rapid and large reversible actuation, have been explored on “monodomain” LCPs in the past few decades. Recently, novel chemistries and technologies have been applied to align the orientation for real-world applications, such as dynamic chemistries, photoalignment and 3D/4D printing, etc. Beyond that, new devices and sensors have been developed to respond to electrical, thermal, and photo stimulation of LCPs. 

This Special Issue will cover the wide range of research in the field on special network designs, synthesis and characterization, new mechanisms and stimulations, novel technologies, and potential applications. Materials and technologies on LCPs are all included. Research works and reviews are both welcome.

Dr. Zhibin Wen
Guest Editor

Manuscript Submission Information

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Keywords

  • liquid crystal polymers
  • synthesis and characterization
  • alignment
  • dynamic chemistry
  • 3D/4D printing
  • sensors
  • smart devices
  • shape-morphing
  • stimuli-responsive polymers

Published Papers (1 paper)

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Research

16 pages, 5885 KiB  
Article
Isothermal and Non-Isothermal Crystallization Kinetics of Poly(ethylene chlorotrifluoroethylene)
by Xiaodong Yang, Bin Yu, Hui Sun, Nan Wang, Peng Liu, Jiangli Feng and Xiaogang Cui
Polymers 2022, 14(13), 2630; https://doi.org/10.3390/polym14132630 - 28 Jun 2022
Cited by 5 | Viewed by 1731
Abstract
The isothermal (IT) and non-isothermal (NIT) crystallization kinetics, morphology, and structure of poly(ethylene chlorotrifluoroethylene) (ECTFE) were investigated via differential scanning calorimetry (DSC), polarized optical microscopy (POM), and wide-angle X-ray diffraction (XRD). The Avrami equation could well describe the overall IT crystallization process of [...] Read more.
The isothermal (IT) and non-isothermal (NIT) crystallization kinetics, morphology, and structure of poly(ethylene chlorotrifluoroethylene) (ECTFE) were investigated via differential scanning calorimetry (DSC), polarized optical microscopy (POM), and wide-angle X-ray diffraction (XRD). The Avrami equation could well describe the overall IT crystallization process of ECTFE, and, furthermore, the overall crystallization rate decreased at higher crystallization temperatures (Tc). The equilibrium melting point for ECTFE was found to be 238.66 °C. The activation energies for IT and NIT crystallization were determined as −137.68 and −120.54 kJ/mol, respectively. The Jeziorny model fitted well with the initial stages of NIT melt crystallization, while deviations from linearity in the later stages of the process were due to the collisions of spherulites. Spherulites of ECTFE organized in a hexagonal crystal system were found. The relative crystalline degree of ECTFE under NIT conditions was about 54.55%, and this decreased with the increase in cooling rate. Moreover, the Ozawa and Mo models were suitable for modeling the overall NIT crystallization process of ECTFE. Full article
(This article belongs to the Special Issue Research and Characterization of Liquid Crystal Polymers)
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