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Related Concept Videos

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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Polymers02:34

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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.
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...
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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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Melt Electrospinning Writing of Three-dimensional Poly(&#949;-caprolactone) Scaffolds with Controllable Morphologies for Tissue Engineering Applications
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Polymers for Melt Electrowriting.

Juliane C Kade1, Paul D Dalton1

  • 1Department of Functional Materials in Medicine and Dentistry, Bavarian Polymer Institute, University Clinic Würzburg, Pleicherwall 2, 97070, Würzburg, Germany.

Advanced Healthcare Materials
|September 17, 2020
PubMed
Summary
This summary is machine-generated.

Melt electrowriting (MEW) is a versatile additive manufacturing technique for creating polymer scaffolds. This review highlights new polymers and printer advancements for biomedical applications.

Keywords:
3D printingadditive manufacturingbiomedical materialselectrohydrodynamic materialsmelt electrospinning writing

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Area of Science:

  • Additive Manufacturing
  • Biomaterials Science
  • Polymer Processing

Background:

  • Melt electrowriting (MEW) is an electrohydrodynamic technique for high-resolution polymer fabrication.
  • Scaffold properties in biomedical applications are significantly influenced by microscale fiber arrangement.
  • Poly(ε-caprolactone) (PCL) is the established standard polymer for MEW.

Purpose of the Study:

  • To review advancements in polymers processed using MEW.
  • To explore alternative polymers and modifications beyond PCL for biomedical uses.
  • To discuss MEW printer designs and future development directions.

Main Methods:

  • Literature review of MEW applications and polymer processing.
  • Analysis of polymer types, including blends and coated fibers.
  • Examination of current and emerging MEW printer technologies.

Main Results:

  • An expanding range of polymers are now processable via MEW.
  • New polymer blends and coated fibers offer tailored properties for biomedical applications.
  • Innovations in MEW printer design are broadening the scope of processable materials.

Conclusions:

  • MEW technology is rapidly evolving with diverse polymer options.
  • Continued development in MEW printers will enable wider material processing.
  • The technique holds significant promise for advanced biomedical scaffold fabrication.