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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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The recycling endosome, also known as the endosomal recycling compartment (ERC), is a part of the slow-recycling process of the endocytic pathway. Molecules internalized through receptor-mediated endocytosis are either degraded in the lysosomes or are recycled to the plasma membrane through the fast- or slow-recycling route.
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The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
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Within the human body, a complex and detailed system of trillions of cells works in unison to sustain life. Each cell houses a nucleus, which contains 46 chromosomes divided into 23 pairs. Chromosomes are highly coiled structures made of the genetic material DNA. These chromosomes are essential carriers of genetic information, with half inherited from the mother through her egg and the other half from the father's sperm, combining to create the unique genetic makeup of an individual.
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The characteristics that enable us to distinguish one substance from another are called properties.
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Updated: Jan 28, 2026

Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer
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Recyclable Self-Healing Polymer Materials With Enhanced Mechanical Properties.

Dongxiang Chen1, Wenlong Wang1, Yan Song1

  • 1State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, China.

Macromolecular Rapid Communications
|January 26, 2026
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Researchers developed recyclable self-healing polymers using polycarbonate segments and hydrogen bonds. These advanced materials offer enhanced mechanical strength and efficient self-healing, promoting sustainable engineering applications.

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high‐performancepolycarbonate‐based polyurethanesrecyclingself‐healing

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Area of Science:

  • Polymer Science
  • Materials Science
  • Sustainable Chemistry

Background:

  • Self-healing polymers are crucial for extending material lifespan and ensuring safety in demanding conditions.
  • There is a growing demand for sustainable materials with improved mechanical properties and recyclability.
  • Current self-healing materials often lack a balance of performance, recyclability, and sustainability.

Purpose of the Study:

  • To fabricate a novel recyclable self-healing polymer.
  • To enhance mechanical properties and self-healing efficiency through material design.
  • To investigate the recyclability of polymer components using sustainable methods.

Main Methods:

  • Incorporation of rigid polycarbonate segments with varying molecular weights.
  • Utilizing hierarchical hydrogen bonding interactions for material reinforcement.
  • Employing deep eutectic solvents for the chemical recycling of polycarbonate diol monomers.

Main Results:

  • The synthesized polymers exhibit a tensile strength exceeding 68 MPa.
  • Achieved a self-healing efficiency of 70% after 24 hours at 70°C.
  • Demonstrated effective recovery of high-value polycarbonate diol monomers via deep eutectic solvents.

Conclusions:

  • The fabricated polymers possess a unique combination of high mechanical performance, self-healing capabilities, and recyclability.
  • The integration of polycarbonate segments and hierarchical H-bonds is key to achieving desired material properties.
  • These materials present a viable solution for sustainable engineering applications, addressing the need for eco-friendly and durable solutions.