Molecular weight dependence of hysteresis in electro-optical switching of (polymer/liquid crystal) composite systems

Hwan Kyeong Jeong; Hirotsugu Kikuchi; Tisato Kajiyama

doi:10.1295/polymj.31.974

Molecular weight dependence of hysteresis in electro-optical switching of (polymer/liquid crystal) composite systems

Hwan Kyeong Jeong, Hirotsugu Kikuchi, Tisato Kajiyama

Department of Integrated Materials

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

3 Citations (Scopus)

Abstract

The relationship between molecular weight (M_w) of matrix polymer and hysteresis in electro-optical switching was investigated for the poly(methyl methacrylate)/liquid crystal (PMMA/E8) composite systems. The size of the E8 domains in the (PMMA/E8) composite system was larger for the case of low M_w PMMA than the case of high M_w PMMA. This result can be explained by the magnitude of diffusion velocity depending on the M_w of PMMA. It was revealed that the electro-optical switching hysteresis of the high M_w-PMMA/E8 composite system decreased remarkably compared with the low M_w composite systems. This phenomenon might be explained on the basis of the different compatibility between PMMA and E8, which was directly dependent on the M_w of PMMA.

Original language	English
Pages (from-to)	974-978
Number of pages	5
Journal	Polymer Journal
Volume	31
Issue number	11 pt 1
DOIs	https://doi.org/10.1295/polymj.31.974
Publication status	Published - 1999

All Science Journal Classification (ASJC) codes

Polymers and Plastics
Materials Chemistry

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10.1295/polymj.31.974

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title = "Molecular weight dependence of hysteresis in electro-optical switching of (polymer/liquid crystal) composite systems",

abstract = "The relationship between molecular weight (Mw) of matrix polymer and hysteresis in electro-optical switching was investigated for the poly(methyl methacrylate)/liquid crystal (PMMA/E8) composite systems. The size of the E8 domains in the (PMMA/E8) composite system was larger for the case of low Mw PMMA than the case of high Mw PMMA. This result can be explained by the magnitude of diffusion velocity depending on the Mw of PMMA. It was revealed that the electro-optical switching hysteresis of the high Mw-PMMA/E8 composite system decreased remarkably compared with the low Mw composite systems. This phenomenon might be explained on the basis of the different compatibility between PMMA and E8, which was directly dependent on the Mw of PMMA.",

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T1 - Molecular weight dependence of hysteresis in electro-optical switching of (polymer/liquid crystal) composite systems

AU - Jeong, Hwan Kyeong

AU - Kikuchi, Hirotsugu

AU - Kajiyama, Tisato

PY - 1999

Y1 - 1999

N2 - The relationship between molecular weight (Mw) of matrix polymer and hysteresis in electro-optical switching was investigated for the poly(methyl methacrylate)/liquid crystal (PMMA/E8) composite systems. The size of the E8 domains in the (PMMA/E8) composite system was larger for the case of low Mw PMMA than the case of high Mw PMMA. This result can be explained by the magnitude of diffusion velocity depending on the Mw of PMMA. It was revealed that the electro-optical switching hysteresis of the high Mw-PMMA/E8 composite system decreased remarkably compared with the low Mw composite systems. This phenomenon might be explained on the basis of the different compatibility between PMMA and E8, which was directly dependent on the Mw of PMMA.

AB - The relationship between molecular weight (Mw) of matrix polymer and hysteresis in electro-optical switching was investigated for the poly(methyl methacrylate)/liquid crystal (PMMA/E8) composite systems. The size of the E8 domains in the (PMMA/E8) composite system was larger for the case of low Mw PMMA than the case of high Mw PMMA. This result can be explained by the magnitude of diffusion velocity depending on the Mw of PMMA. It was revealed that the electro-optical switching hysteresis of the high Mw-PMMA/E8 composite system decreased remarkably compared with the low Mw composite systems. This phenomenon might be explained on the basis of the different compatibility between PMMA and E8, which was directly dependent on the Mw of PMMA.

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Molecular weight dependence of hysteresis in electro-optical switching of (polymer/liquid crystal) composite systems

Abstract

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