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関連する概念動画

Polymer Classification: Architecture01:14

Polymer Classification: Architecture

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...
Ziegler–Natta Chain-Growth Polymerization: Overview01:17

Ziegler–Natta Chain-Growth Polymerization: Overview

Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta catalyst, high molecular...
Free-Radical Chain Reaction and Polymerization of Alkenes02:35

Free-Radical Chain Reaction and Polymerization of Alkenes

The conversion of alkenes to macromolecules called polymers is a reaction of high commercial importance. The structure of the polymer is defined by a repeating unit, while the terminal groups are considered insignificant. The average degree of polymerization represents the number of repeating units in the polymer molecule and is denoted by the subscript n.
Types of Step-Growth Polymers: Polyesters01:20

Types of Step-Growth Polymers: Polyesters

The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
Characteristics and Nomenclature of Copolymers01:24

Characteristics and Nomenclature of Copolymers

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...

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関連する実験動画

Updated: Jun 14, 2026

Using Polystyrene-block-poly(acrylic acid)-coated Metal Nanoparticles as Monomers for Their Homo- and Co-polymerization
09:02

Using Polystyrene-block-poly(acrylic acid)-coated Metal Nanoparticles as Monomers for Their Homo- and Co-polymerization

Published on: July 9, 2015

ブロックポリマー前駆体からナノ孔性の線形ポリエチレン.

Louis M Pitet1, Mark A Amendt, Marc A Hillmyer

  • 1Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA.

Journal of the American Chemical Society
|April 2, 2010
PubMed
まとめ
この要約は機械生成です。

リチウムイオン電池のための新しいナノ孔性のポリマー膜は,ブロックポリマーを使用して作成されました. これらの膜は,高度なバッテリー技術にとって不可欠な,適正な毛穴性と優れた化学耐性を提供します.

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

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Formulation of Diblock Polymeric Nanoparticles through Nanoprecipitation Technique
06:47

Formulation of Diblock Polymeric Nanoparticles through Nanoprecipitation Technique

Published on: September 20, 2011

関連する実験動画

Last Updated: Jun 14, 2026

Using Polystyrene-block-poly(acrylic acid)-coated Metal Nanoparticles as Monomers for Their Homo- and Co-polymerization
09:02

Using Polystyrene-block-poly(acrylic acid)-coated Metal Nanoparticles as Monomers for Their Homo- and Co-polymerization

Published on: July 9, 2015

Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules
08:40

Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules

Published on: April 28, 2014

Formulation of Diblock Polymeric Nanoparticles through Nanoprecipitation Technique
06:47

Formulation of Diblock Polymeric Nanoparticles through Nanoprecipitation Technique

Published on: September 20, 2011

科学分野:

  • マテリアルサイエンス 材料科学
  • ポリマー化学のポリマー化学について
  • 電気化学 電気化学について

背景:

  • 多孔のポリオレフィン膜は,リチウムイオン電池にとって不可欠であり,短路を防ぐために分離器として作用します.
  • 犠牲成分を持つブロックポリマーは,自己組み立てと選択的除去を通じてナノ孔膜を作成するための有望な前駆体です.

研究 の 目的:

  • リチウムイオン電池アプリケーションに合わせたナノポーラス膜を作成するための新しいブロックポリマーを合成し,特徴づけること.
  • これらの膜の構造-特性関係を調査し,多孔性,機械的強度,化学的耐性に焦点を当てた.

主な方法:

  • リング開きポリメリゼーションを用いたブロックポリマーの合成,ポリアクチド (PLA) が犠牲成分であり,線形ポリエチレン (LPE) がマトリックスである.
  • 窒素吸附とスキャニング電子顕微鏡を用いた形状と毛細さの特徴付け.
  • 張力試験による機械性能の評価と,濃縮された強い酸への曝露による化学耐性の評価.

主要な成果:

  • LPE-PLAブロックコポリマーを合成し,広範な組成範囲で二連続形質を形成しました.
  • PLAの選択的除去により,相互接続された空洞 (<100 nmの孔) を有する半結晶型LPEナノ孔膜が得られました.
  • その結果生じた膜は,優れた機械的強度と強い酸に対する優れた化学的耐性を示した.

結論:

  • ブロックコポリマーは,高度なバッテリー分離器のための調節可能な特性を持つナノ孔性のポリマー膜を設計するための多用途な経路を提供します.
  • 開発されたLPEベースのナノ孔膜は,リチウムイオン電池の安全性と性能を向上させる大きな可能性を示しています.