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Updated: May 30, 2026

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
11:42

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

Published on: June 20, 2019

ポリクリスタリンポリマーの円形の二重断裂について:ポリアクチド

Hai-Mu Ye1, Jun Xu, John Freudenthal

  • 1Department of Chemical Engineering, Tsinghua University, Beijing, China.

Journal of the American Chemical Society
|August 16, 2011
PubMed
まとめ

ミュラーマトリックス顕微鏡を用いたポリラクチド球体質の調査は,それらの円形の二重断裂は,固有の光学活動ではなく,誤った指向のラメラから生じることを明らかにした. この発見は,結晶ポリマーの光阻害メカニズムを明確にします.

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Polymer Classification: Crystallinity01:21

Polymer Classification: Crystallinity

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...
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Polymer Classification: Architecture

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Polymer Classification: Stereospecificity

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...
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Characteristics and Nomenclature of Copolymers

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Polymers: Molecular Weight Distribution

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Molecular Weight of Step-Growth Polymers

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The extent of the...