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Ziegler–Natta Chain-Growth Polymerization: Overview01:17

Ziegler–Natta Chain-Growth Polymerization: Overview

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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...
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Molecular Weight of Step-Growth Polymers01:08

Molecular Weight of Step-Growth Polymers

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Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas multifunctional monomers react to form non-linear or branched polymers.
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
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Updated: Sep 29, 2025

Solution Blow Spinning of Polymeric Nano-Composite Fibers for Personal Protective Equipment
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Solution Blow Spinning of Polymeric Nano-Composite Fibers for Personal Protective Equipment

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ねじれたポリマーを使ったシービングガス

Peter M Budd1

  • 1Department of Chemistry, University of Manchester, Manchester M13 9PL, UK.

Science (New York, N.Y.)
|March 24, 2022
PubMed
まとめ

三次元レッダーポリマーは,ガス分離膜の重要な可能性を示しています. これらの先進的な材料は,効率的なガス分離アプリケーションのための有望なソリューションを提供します.

科学分野:

  • 材料科学
  • ポリマー化学
  • 化学工学

背景:

  • ガス分離膜は様々な産業プロセスに不可欠です.
  • 伝統的な膜は 選択性や浸透性に問題があります
  • これらの制限を克服するために新しいポリマーアーキテクチャが必要です.

研究 の 目的:

  • 三次元レダードポリマーのガス分離特性について研究する.
  • 先進的な膜材料としてその可能性を評価する.

主な方法:

  • 新しい3次元レダードポリマー構造の合成
  • 膜試験用のポリマーフィルムの製造
  • 選択性や透過性を評価するためのガス浸透実験.

主要な成果:

  • 合成されたレダールポリマーは 独特の3次元ネットワーク構造を示しています
  • これらのポリマーは有望なガス分離性能を示した.
  • 主要なガスペアでは,高い選択性と透過性が観察された.

結論:

  • 三次元レダードポリマーは,ガスの分離のための有望な新しい材料のクラスを表します.

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  • 独特の構造により 効率的な分離が可能で 工業的な応用が可能です