Molecular Structure of Foldable Bottlebrush Polymers in Melts

Macromolecules, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

A bottlebrush polymer consists of a long linear backbone densely grafted with many relatively short side chains. widely accepted view is that strong steric repulsion among the highly overlapped chains prestrains backbone, resulting in low extensibility. However, we recently discovered melt polymers incompatible and collapses to reduce interfacial free energy, regardless Despite this discovery, molecular structure these so-called "foldable" their assemblies remains poorly understood. Here, present deterministic relationships architecture, mesoscopic conformation, macroscopic properties foldable polymers. combination scaling theory experiments reveals as chain grafting density decreases, diameter increases, whereas end-to-end distance decreases. These behaviors contradict existing understanding polymers, which assumes are compatible. Since store lengths can be released upon large deformations, they offer way decouple intrinsic stiffness-extensibility trade-off single-network elastomers. findings provide foundational insights into using building blocks for designing soft (bio)materials.

Language: Английский

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Effects of Plasticizers on the Mechanical Properties of Polyvinyl Butyral: A Combined Molecular Dynamics and Experimental Study

Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 112502 - 112502

Published: April 1, 2025

Language: Английский

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Molecular bridge crosslinking and nano-ZnO synergistically construct fluorine/silicon-free multifunctional cotton fabric coatings

Progress in Organic Coatings, Journal Year: 2025, Volume and Issue: 206, P. 109366 - 109366

Published: May 9, 2025

Language: Английский

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Co-initiating-system dual-mechanism drives the design of printable entangled polymer multinetworks

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: May 12, 2025

Entanglement significantly enhances the mechanical performance and functionality of both natural synthetic materials. However, developing straightforward, versatile strategies for creating high-performance entangled polymer materials remains a challenge. Here, co-initiating-system dual-mechanism strategy is designed fabricating printable multinetworks. This thermal-light dual-initiation process benefits synthesis high-molecular-weight polymers promotes rapid formation multinetworks within hydrogels. The resulting long chains enable hydrogels with higher performance, lower stress relaxation, activation energy compared to short chain-contained samples. Such method proves more effective than traditional self-thickening strengthening techniques enhancing hydrogel entanglements also compatible additive manufacturing, enabling design complex 2D webs adaptive capable detecting sensing applications. work provides an designing materials, which are set impact numerous fields, from advanced material science beyond.

Language: Английский

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Vat Photopolymerization Printing of Modular Soft Stretchable Low-Cost Elastomers

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: June 4, 2025

Language: Английский

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