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Nanoscopic structure of nanogels formed from self-associating polymers

自己組織化高分子ナノゲルの内部微細構造

関根 由莉奈; 遠藤 仁*; 秋吉 一成*

Sekine, Yurina; Endo, Hitoshi*; Akiyoshi, Kazunari*

高分子ハイドロゲルとナノ微粒子両方の性質を併せ持つナノゲルは、材料科学やナノテクノロジー分野でその応用が期待されている。ナノゲル内部の架橋点や高分子鎖ネットワーク構造はその性質に大きく関与するが、詳細な構造は今まで明らかになっていなかった。本研究では、多成分材料において各々の成分のナノ構造を調べることができるコントラスト変調中性子小角散乱法を利用して、ナノゲルの内部微細構造を評価した。本発表では、それらの結果について議論する。

Nanogels, which have characteristic properties of both hydrogels and nanoparticles are attracting growing interest in the fields of material science and nanotechnology. Although the spatial distribution of cross-linking points in the nanogels would be highly related to their properties, no clear nanoscopic information has been obtained so far due to the complex structure with the multi components. The detailed internal structure of a nanogel formed by self-association of cholesterol-bearing pullulans (CHP) was investigated by contrast variation small-angle neutron scattering (CV-SANS), which enables us to determine quantitative complex structure at nanometer scale. In this presentation, I will discuss the detailed structure of the nanogels.

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