Dynamic mechanical properties of solid films of deoxyribonucleic acid

Hisao Matsuno, Jun Ichi Nakahara, Keiji Tanaka

    研究成果: Contribution to journalArticle査読

    13 被引用数 (Scopus)

    抄録

    Solid films of deoxyribonucleic acid (DNA) from salmon testes were prepared by a solvent-casting method. The thermal molecular motion of the DNA film was examined by dynamic mechanical analysis (DMA). Four absorption peaks and one shoulder of the loss modulus were observed in the temperature domain from approximately 150 to 490 K. To assign these, thermal analysis employing thermogravimetry (TG) and differential thermal analysis (DTA) was used in conjunction with ultraviolet (UV)-visible and Fourier-transform infrared (FT-IR) spectroscopy. It seems most likely that, in order of increasing temperature, they are a BI→BII conformational transition, a relatively large-scale movement associated with water molecules, water evaporation, thermal denaturation of DNA, and a glass transition.

    本文言語英語
    ページ(範囲)173-178
    ページ数6
    ジャーナルBiomacromolecules
    12
    1
    DOI
    出版ステータス出版済み - 1 10 2011

    All Science Journal Classification (ASJC) codes

    • バイオエンジニアリング
    • 生体材料
    • ポリマーおよびプラスチック
    • 材料化学

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