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ブロックコポリマー薄膜の領域間隔を調節するために分子重量分布の形を利用する

  • 0Department of Chemistry and Chemical Biology , Cornell University , Ithaca , New York 14853 , United States.
Journal of the American Chemical Society +

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2018年3月10日

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2018年3月10日

PubMedで要約を見る

まとめ

この要約は機械生成です。

ポリマー鎖の分子量分布を変化させることで ブロックコポリマー薄膜の間隔を正確に制御する 新しい方法を実証しました この技術は,材料の性質に影響を与えることなく,ドメイン間隔の重要な調整を可能にします.

科学分野

  • ポリマー科学
  • 材料科学
  • ナノテクノロジー

背景

  • 自己組み立てブロックコポリマー薄膜は,ナノテクノロジーのアプリケーションに不可欠です.
  • ドメイン間隔 (Dsp) の制御は,フィルムの特性を調整するために不可欠です.
  • DSPをチューニングする既存の方法は限界があります.

研究 の 目的

  • ポリチレンブロックメチルメタクリレート (PS-b-PMMA) の薄膜のドメイン間隔を調整する方法を開発.
  • 分子重量分布 (MWD) の形状が Dsp に与える影響を調査する.
  • MWDの瞬間に基づいたDSPの予測モデルを作成します.

主な方法

  • PSブロックMWDを修正するために鎖開始の時間制御によるアニオンポリメリゼーション.
  • ブロックコポリマー薄膜の特徴
  • 人口統計と最小二乗解析を用いた統計モデルの開発.

主要な成果

  • 同じ総分子量 (Mn ≈ 125 kg mol-1) のポリマーで最大41%のDsp増加を達成した.
  • MWDの幅と歪みがDSPに大きく影響していることが示された.
  • 高精度 (平均絶対誤差 1.2 nm または 1. 8%) の予測モデルを開発した.

結論

  • MWD形は,ブロックコポリマー薄膜のDSPを制御するための強力で調整可能なパラメータです.
  • 開発された統計モデルは,DSPの決定におけるMWDの役割についての物理的な洞察を提供します.
  • この作業は,ブロックコポリマー材料でDSPを微調整するためのシンプルでモジュラーなプラットフォームを提供します.

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