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2018 Fiscal Year Final Research Report

Molecular origin of nonideal behavior for intrinsic birefringence of polymers

Research Project

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Project/Area Number 16H04204
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Polymer/Textile materials
Research InstitutionOsaka University

Principal Investigator

Inoue Tadashi  大阪大学, 理学研究科, 教授 (80201937)

Co-Investigator(Kenkyū-buntansha) 片島 拓弥  大阪大学, 理学研究科, 助教 (20759188)
浦川 理  大阪大学, 理学研究科, 准教授 (70273539)
Project Period (FY) 2016-04-01 – 2019-03-31
Keywords配向複屈折 / 光学材料 / 固有複屈折
Outline of Final Research Achievements

Birefringence of polymeric materials arises due to the deformation and molding of polymers, and has been used as a wave plate for liquid crystal displays. The relationship between the strain-induced birefringence and the molecular structure is roughly understood, but there are systematic deviations in theory and experimental results such as anomalous temperature dependence. By clarifying the molecular origin of this deviation, it becomes possible to control the birefringence of the polymer more precisely, and this result can be applied to develop a high-performance optical material.

Free Research Field

高分子物理化学

Academic Significance and Societal Importance of the Research Achievements

高分子の複屈折は,液晶ディスプレイなどの高分子フィルムで多用されているが,その複屈折の分子論的な起源は完全に解明されていなかった.従来の理論では,複屈折は温度に依存しないが実際には依存し,液晶ディスプレイの温度による色調の変化の原因となっていた.本研究により,未解明であった複屈折の温度依存性などの微視的な起源が明らかになり,高分子の複屈折をより精密に制御する方法への糸口が得られた,複屈折の精密制御は,高精細で色調の変化がない液晶ディスプレイの開発などに利用され,また高分子光学材料の開発につながるものである.

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Published: 2020-03-30  

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