イモゴライト合成時の加熱時間による状態変化について : 加熱時間による自己組織化と性質の変化

概要

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Imogolite was synthesized varying duration of reaction with heating. The tube length was longer with higher purity for imogolite synthesized for longer reaction. No elongation was observed for imogolite tube in the range of 7 days or more. However, the tubes of imogolite bunched to form net texture by the reaction for 14 days. The gel volume of imogolite increased with forming the net texture, in addition to the generation of imogolite, and the viscosity rapidly increased with generating the imogolite. A high transparency was observed for the state without particles and the texture of tubes. No significant change in transparency was observed for imogolite with higher purity, when ammonia was added into the imogolite solution. This phenomenon should be an indicator for purity of imogolite in the solution.
2007-12-26