関連する実験動画
Updated: Dec 28, 2025

07:04
Synthesis of Strong Adhesive Hydrogel, Gelatin O-Nitrosobenzaldehyde
Published on: November 11, 2022
2.9K
バイオミメティック粘着剤の弱い結合は頑丈さと性能を向上させる
Michael G Mazzotta1, Amelia A Putnam1, Michael A North1
1Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2084, United States.
Journal of the American Chemical Society
|February 19, 2020
まとめ
研究者たちは 粘着性を高めるために 生物模倣粘着剤を開発しました このアプローチは天然の材料を模倣し,高度な用途のために強いが柔らかい合成接着剤を作成します.
科学分野:
- 材料科学
- ポリマー化学
- バイオミメティック
背景:
- 高性能の接着剤の設計には 耐久性と柔軟性のバランスをとる必要があります
- 生物学的材料は階層構造と弱い結合によって 頑丈さを達成し 合成材料のモデルとなるのです
研究 の 目的:
- 強化された強度と柔らかさを持つ合成接着剤を作成するためのバイオミメティックアプローチを調査する.
- 機械的ストレスを解消するために 合成ポリマーの犠牲結合の使用を調査する.
主な方法:
- バイオミメティックなポリマーを合成した.
- エチレングリコールなどの二機能添加物を組み込み,インターポリマーネットワークを形成します.
- 物質の性質と結合を分析するために,光譜的および物理的な方法を使用した.
主要な成果:
- 二機能添加物は,システムモジュールを減らし,粘着性能を大幅に高めました.
- 軟弱な水素結合のインターポリマーネットワークが形成され,材料の頑丈さを高めました.
- 犠牲の絆は 機械的ストレスを効果的に消し去り 粘着マトリックスを保存します
結論:
- 犠牲結合を用いたバイオミメティック戦略は,合成接着剤の強さと柔らかさのバランスを達成できます.
- このアプローチは,電子,輸送,航空宇宙のための高性能材料を設計するための一般的な原則を提供します.
- 生物学的な戦略を模倣することで 固有の物質的性質の矛盾を克服できるのです
関連する概念動画
Bonding and Strength of Aggregate
393
The bond between aggregate particles and the cement matrix is significantly influenced by the shape and surface texture of the aggregates. High-strength concretes benefit from a rougher texture, which leads to stronger bonding due to greater adhesion. Angular aggregates with larger surface areas also enhance this bond. The bonding quality, however, is complex to assess as no universally accepted test exists. Good bonding is indicated when a crushed concrete specimen shows some aggregate...
393
Cell-matrix's Response to Mechanical Forces
3.3K
In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue.
Anchoring junctions mechanically attach a cell to the...
Anchoring junctions mechanically attach a cell to the...
3.3K
Noncovalent Attractions in Biomolecules
62.9K
Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
62.9K
Adhesion
43.2K
Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow...
Capillary action is a result of water’s adhesive tendencies. When a narrow...
43.2K
Cohesion
58.0K
Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
On a...
On a...
58.0K
Tension Response at Adherens Junctions
3.4K
The adherens junctions that anchor cells together are multi-protein complexes that dynamically adapt to mechanical stimuli such as tensile forces and shear stress. Mechanosensory proteins in these junctions can sense such mechanical stimuli and undergo a shift in their conformation, resulting in an altered function — a process called mechanotransduction.
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin...
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin...
3.4K

