ArticleACS macro letters2024
Bidispersity Improves the Toughness and Impact Resistance of Star-Polymer Thin Films.
Article in ACS macro letters, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Characterizing the Structural Conformation of Highly Charged Star-Linear Polyelectrolyte Mixtures in Solution.Macromolecules · 2025Article
- Mechanism of Coupling Twist Angle and Projectile Radius on Ballistic Impact Performance of Bilayer Phosphorene Membranes.Nanomaterials (Basel, Switzerland) · 2025Article
- The evolution of ABC star polymers: from trial-and-error to rational design.RSC advances · 2025Review
- Optimizing Graphene Dispersion via Polymer Grafting.Macromolecules · 2025Article
- Nosé-Hoover Integrators at-a-Glance: Barostat Integration Has a Demonstrable Effect on Uniaxial Tension Results of Solid Materials.Journal of chemical theory and computation · 2025Review
- Vat Photopolymerization of Ceramic Parts: Effects of Carbon Fiber Additives on Microstructure and Mechanical Performance.Materials (Basel, Switzerland) · 2024Article
Corrections and comments
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Authors and funding
3 authors.
Funding
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Abstract
Branched polymer architectures are used to tune the mechanical properties of impact-resistant thin films through parameters, such as chain length and grafting density. While chain dispersity affects molecular properties, such as interpenetration and entanglements, structure-property relationships accounting for dispersity are challenging to obtain experimentally and are often neglected in computational models. We employ molecular dynamics simulations to model the high-rate tensile elongation and nanoballistic impact of thin films composed of bidisperse star polymers with varying arm lengths. We find that, at fixed molecular weight, high dispersity can significantly enhance the toughness and impact resistance of the films without decreasing their elastic modulus. Bidisperse stars with fewer longer arms are less entangled, but stretch and interpenetrate for longer times during crazing, leading to increased toughness. These findings highlight controlled dispersity as a design strategy to improve the mechanical properties of polymer composites across Pareto fronts.
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Registered trials
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