Dynamics of defect annihilations in polymerization of aromatic liquid crystalline polyesters

Yan Wang; Tai Shung Chung; Si Xue Cheng; Jingmei Xu

doi:10.1021/jp030570w

Dynamics of defect annihilations in polymerization of aromatic liquid crystalline polyesters

Yan Wang, Tai Shung Chung^*, Si Xue Cheng, Jingmei Xu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We have studied the annihilation process of disclinations during in situ thin film polymerization of a series of aromatic liquid crystalline polyesters by using a polarizing light microscope (PLM). The decreases both in isotropic molten area during liquid crystal (LC) phase formation and in distance between LC disclination pairs during annihilation are found to follow a power law relation. However, abnormal annihilation phenomena, which have not been previously reported, are observed. A faster annihilation rate in the late stage of the annihilation process and an increase in the distance of a disclination pair can occur if the LC system is a reacting system or if the surroundings have other ongoing annihilations.

Original language	English (US)
Pages (from-to)	1596-1603
Number of pages	8
Journal	Journal of Physical Chemistry B
Volume	108
Issue number	5
DOIs	https://doi.org/10.1021/jp030570w
State	Published - Feb 5 2004
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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abstract = "We have studied the annihilation process of disclinations during in situ thin film polymerization of a series of aromatic liquid crystalline polyesters by using a polarizing light microscope (PLM). The decreases both in isotropic molten area during liquid crystal (LC) phase formation and in distance between LC disclination pairs during annihilation are found to follow a power law relation. However, abnormal annihilation phenomena, which have not been previously reported, are observed. A faster annihilation rate in the late stage of the annihilation process and an increase in the distance of a disclination pair can occur if the LC system is a reacting system or if the surroundings have other ongoing annihilations.",

author = "Yan Wang and Chung, {Tai Shung} and Cheng, {Si Xue} and Jingmei Xu",

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AU - Wang, Yan

AU - Chung, Tai Shung

AU - Cheng, Si Xue

AU - Xu, Jingmei

PY - 2004/2/5

Y1 - 2004/2/5

N2 - We have studied the annihilation process of disclinations during in situ thin film polymerization of a series of aromatic liquid crystalline polyesters by using a polarizing light microscope (PLM). The decreases both in isotropic molten area during liquid crystal (LC) phase formation and in distance between LC disclination pairs during annihilation are found to follow a power law relation. However, abnormal annihilation phenomena, which have not been previously reported, are observed. A faster annihilation rate in the late stage of the annihilation process and an increase in the distance of a disclination pair can occur if the LC system is a reacting system or if the surroundings have other ongoing annihilations.

AB - We have studied the annihilation process of disclinations during in situ thin film polymerization of a series of aromatic liquid crystalline polyesters by using a polarizing light microscope (PLM). The decreases both in isotropic molten area during liquid crystal (LC) phase formation and in distance between LC disclination pairs during annihilation are found to follow a power law relation. However, abnormal annihilation phenomena, which have not been previously reported, are observed. A faster annihilation rate in the late stage of the annihilation process and an increase in the distance of a disclination pair can occur if the LC system is a reacting system or if the surroundings have other ongoing annihilations.

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JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 5

ER -

Dynamics of defect annihilations in polymerization of aromatic liquid crystalline polyesters

Abstract

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