Apparatus for thermal analytic microscopy and its application to cholesteryl nonanoate.

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概要

• 論文の詳細を見る

• The phase transitions of cholesteryl nonanoate were studied by means of a newly constructed apparatus for thermal analytic microscopy incorporating a thermoelement. It was possible to determine the heat of mesophase transitions more accurately. The transition values of cholesteryl nonanoate on cooling were obtained with the same accuracy as those on heating. The heat of the smectic-solid transition was obtained by slow cooling, which suppressed the supercooling. The vortices caused by cholesteric spherulites, which are similar to those of cholesteryl octanoate, change to circular arrangements of batonnets in the smectic phase. Color changes were observed at the cholesteric-smectic transition in extremely thick specimens. The relations between texture, color, and heat at the cholesteric-smectic transition of cholesteryl nonanoate are discussed.

• 公益社団法人 日本化学会の論文

著者

• Hagiwara Seiichi

  Tokyo Riko Co. Ltd.

• Hagiwara Seiichi

  Tokyo Rikoh Company

• Kunihisa Kazuko

  National Chemical Laboratory for Industry

関連論文

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• Apparatus for thermal analytic microscopy and its application to cholesteryl nonanoate.
• Study of cholesteryl formate and cholesteryl octanoate by means of thermal analytic microscopy with a thermoelement.

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