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Related Concept Videos

Step-Growth Polymerization: Overview01:03

Step-Growth Polymerization: Overview

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Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
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Polymer Classification: Architecture01:14

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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...
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Polymer Classification: Stereospecificity01:26

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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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Free-Radical Chain Reaction and Polymerization of Alkenes02:35

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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.
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Anionic Chain-Growth Polymerization: Overview01:20

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The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
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Polymers02:34

Polymers

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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...
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Related Experiment Video

Updated: Jun 29, 2025

The Preparation and Properties of Thermo-reversibly Cross-linked Rubber Via Diels-Alder Chemistry
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New Prospects Arising from Dynamically Crosslinked Polymers: Reprogramming Their Properties.

Yunchao Jia1, Jingjing Qian1, Senyuan Hao1

  • 1School of Materials Science and Engineering, Henan University of Technology, 100 Lianhua St., Zhengzhou, 450001, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|April 5, 2024
PubMed
Summary
This summary is machine-generated.

Dynamically crosslinked polymers (DCPs) offer sustainable solutions for plastic waste. This review explores advanced strategies for reprogramming DCP properties post-synthesis, enabling novel applications beyond traditional uses.

Keywords:
dynamically crosslinked polymerslatent catalystsmaterial‐growthnetwork isomerizationproperties reprogramming

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Sustainable Materials

Background:

  • Dynamically crosslinked polymers (DCPs) are crucial for developing recyclable and self-healable thermosets, addressing environmental concerns like plastic pollution.
  • Current research on DCPs primarily focuses on structural modifications rather than property reprogramming.
  • The inherent design flexibility of dynamic covalent networks in DCPs offers untapped potential for advanced applications.

Purpose of the Study:

  • To present recent advancements in strategies for post-synthesis property transformation of DCPs.
  • To provide an overview of mechanisms and material properties associated with these transformation strategies.
  • To discuss the integration of different strategies and analyze future application prospects and challenges.

Main Methods:

  • Overview of three distinct strategies: latent catalysts, material-growth, and topology isomerizable networks.
  • Analysis of underlying mechanisms governing property transformation in DCPs.
  • Discussion on the synergistic effects when integrating multiple strategies within a single material system.

Main Results:

  • Detailed examination of latent catalyst-mediated transformations, enabling triggered property changes.
  • Exploration of material-growth strategies for dynamic network expansion and modification.
  • Analysis of topology isomerizable networks for altering polymer architecture and bulk properties.

Conclusions:

  • DCPs possess significant potential for property reprogramming after initial synthesis, expanding their application scope.
  • Integration of strategies like latent catalysts, material-growth, and topology isomerization offers advanced material design.
  • Further research is needed to overcome current challenges and fully realize the application potential of reprogrammable DCPs.