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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.
Many natural and synthetic polymers are produced by...
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Types of Step-Growth Polymers: Polyesters01:20

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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.
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Molecular Weight of Step-Growth Polymers01:08

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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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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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Ziegler–Natta Chain-Growth Polymerization: Overview01:17

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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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Characteristics and Nomenclature of Copolymers01:24

Characteristics and Nomenclature of Copolymers

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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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Geared Toward Applications: A Perspective on Functional Sequence-Controlled Polymers.

Cangjie Yang1, Kevin B Wu1, Yu Deng1

  • 1Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02467, United States.

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Summary
This summary is machine-generated.

Sequence-controlled polymers offer advanced synthetic capabilities, mimicking biopolymers. Research is exploring novel functions and future applications for these precisely engineered macromolecules.

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Area of Science:

  • Polymer Science
  • Materials Science

Background:

  • Sequence-controlled polymers are synthetic macromolecules with precisely regulated monomer sequences.
  • Recent advancements enable synthetic sequence control comparable to natural biopolymers.

Purpose of the Study:

  • To survey recent functional applications of sequence-controlled polymers.
  • To provide perspectives on challenges and future outlooks for these polymers.

Main Methods:

  • Literature review of recent advances in sequence-controlled polymer synthesis and applications.
  • Analysis of emerging functional properties driven by sequence control.

Main Results:

  • Significant progress in synthesizing polymers with sophisticated sequence control.
  • Emerging focus on exploring novel functions enabled by precise monomer sequencing.

Conclusions:

  • Sequence-controlled polymers are a rapidly developing field with vast potential.
  • Future research should focus on translating sequence control into diverse functional applications.