ACS Macro Letters· 2026Q1
Trapped Topologies in Semiflexible Diblock Copolymer Melts
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- 2026year
Short summary
Semiflexible diblock copolymers can trap a disordered network morphology, preventing transition to lamellae, according to dissipative particle dynamics simulations.
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Key points
- Semiflexible diblock copolymers can exhibit a trapped disordered network morphology.
- This trapping occurs when the persistence length matches the block contour length.
- The trapped phase prevents the usual transition to lamellae upon cooling.
- Equilibrium lamellar phase is recovered only after subsequent thermal cycling.
AI-generated from the title and abstract; the full text is not read.
Abstract
Abstract Diblock copolymer melts with roughly symmetric composition produce a fluctuating, network-like morphology in the disordered state that converts to lamellae upon cooling through the order–disorder transition. Using dissipative particle dynamics simulations, we document the long-time trapping of a single bicontinuous, disordered network phase for a semiflexible diblock copolymer with a persistence length commensurate with the block contour length. The equilibrium lamellar phase is recovered upon subsequent thermal cycling near the equilibrium order–disorder condition. These insights suggest that a disordered network phase could be realized via the controlled cooling of a bottlebrush diblock copolymer melt possessing a modest backbone degree of polymerization.
The authors' abstract, as published at the source. ACS Macro Letters, 2026 · DOI ↗
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Field: Materials Chemistry
Materials ChemistryMaterials Science