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Characteristics and Nomenclature of Copolymers01:24

Characteristics and Nomenclature of Copolymers

2.5K
Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
2.5K
Polymer Classification: Architecture01:14

Polymer Classification: Architecture

2.7K
Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
2.7K
Characteristics and Nomenclature of Homopolymers01:00

Characteristics and Nomenclature of Homopolymers

3.0K
Polymers that are made up of identical monomer units are called homopolymers. Only one repeating unit is involved in the construction of the homopolymer structure. For example, as depicted in Figure 1, polypropylene is a homopolymer constituted of propylene monomers. Here, the only repeating unit in the polymer chain is propylene.
3.0K
Polymer Classification: Crystallinity01:21

Polymer Classification: Crystallinity

2.9K
Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
2.9K
Polymers02:34

Polymers

35.8K
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
35.8K
Polymer Classification: Stereospecificity01:26

Polymer Classification: Stereospecificity

2.4K
Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
2.4K

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Updated: Jul 6, 2025

Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules
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Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules

Published on: April 28, 2014

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熱力学的に安定した水道工の悪夢構造のブロックコポリマー

Hojun Lee1, Sangwoo Kwon2, Jaemin Min1

  • 1Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.

Science (New York, N.Y.)
|January 4, 2024
PubMed
まとめ
この要約は機械生成です。

研究者はブロックコポリマーから 安定した複雑なネットワークナノ構造を作り出す新しい方法を開発しました 先進的なナノテクノロジーの応用で 材料の性質を正確に制御できるのです

さらに関連する動画

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
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Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

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Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
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Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers

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Last Updated: Jul 6, 2025

Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules
08:40

Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules

Published on: April 28, 2014

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Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
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Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

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Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
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科学分野:

  • ポリマー科学
  • 材料科学
  • ナノテクノロジー

背景:

  • ブロックコポリマーの自己組み立ては,球体,シリンダー,ネットワークのような多様なナノ構造を生成します.
  • 熱力学的に安定したネットワーク構造を高圧で達成することは困難です.
  • ナノスケールの特性や機能の正確な制御は,高度なアプリケーションにとって極めて重要です.

研究 の 目的:

  • 二重ブロックコポリマーから多様なネットワーク構造にアクセスするための方法論を開発する.
  • ネットワークの異なる段階の安定性に影響を与える要因を調査する.
  • ブロックコポリマーベースのナノマテリアルの作成のためのプラットフォームを確立する.

主な方法:

  • 二重ブロックコポリマーにおけるエンドグループとリンクラー化学を用いる.
  • ブロックコポリマーの自己組み立てをネットワークフェーズに調査する.
  • ポリマー鎖末端の相互作用と曲線の相互作用を分析する.

主要な成果:

  • ジャイロイド,ダイアモンド,原始的なフェーズを含む多様なネットワーク構造にアクセスしました.
  • ポリマー鎖の末端の中間包装 (水管工の悪夢のような構造) は骨格の集積 (状腺) よりも安定性があることが判明した.
  • 安定性は,端の相互作用強さと初期曲率のバランスに起因する.

結論:

  • ブロックコポリマーからカスタマイズされたネットワーク構造を作成するための新しいアプローチが確立されています.
  • この発見は,ブロックコポリマーをナノテクノロジーで利用するためのプラットフォームを提供します.
  • ネットワークの安定性を支配する要因を理解することは,高度な材料の設計の鍵です.