Coordination Chemistry Reviews, Год журнала: 2025, Номер 537, С. 216679 - 216679
Опубликована: Апрель 11, 2025
Язык: Английский
Journal of the American Chemical Society, Год журнала: 2025, Номер unknown
Опубликована: Март 4, 2025
Making polyesters with conventional vinyl monomers is one of the most economical ways to develop sustainable polymeric materials. For polar vinyls, while their transformation into lactones has been studied extensively, there exists no further access synthesizing polyesters, presumably due nonstrained and nonpolymerizable nature obtained lactones. Herein, we report first facile synthesis that originated from critical classes vinyls-acrylates. Specifically, a series modular six-membered were rationally designed synthesized methyl acrylate together malonic esters containing diverse functional groups formaldehyde. The underwent ring-opening polymerization (ROP) yield acrylate-derived which constitute unique polymer platform large scope potential functionalities performances as well easy chemical circularity under mild conditions. Notably, are rare example featuring tunable on side ester whose impact certain material properties (e.g., glass transition temperature) similar polyacrylates, implying replacement between polyacrylates. In addition, by presenting special geminal disubstitutions originally monomers' γ-position for time, also exhibited unprecedentedly enhanced thermal recycling properties: Variation offers large-span modulation completely amorphous high-level crystalline materials, melting temperature high crystallinity was drastically increased 84 °C compared reported monosubstituted counterpart. At same other required harsh conditions (>150 vacuum), gem-disubstituted in this work can undergo complete much milder (80 ambient pressure). This study informs design future high-performance derived vinyls.
Язык: Английский
Процитировано
0
Macromolecular Rapid Communications, Год журнала: 2025, Номер unknown
Опубликована: Апрель 8, 2025
Abstract Block copolymers (BCPs), capable of self‐assembling into various nanoscale structures, are widely used in adhesives owing to their versatile properties. However, conventional BCP‐based pose environmental concerns: they petroleum‐derived, non‐degradable, and have a non‐tunable adhesion strength. To address these challenges, novel BCP is designed comprising hard segment, polystyrene (PS), green rubbery poly(ethyl lipoate) (PEtLp), derived from the bio‐based molecule α ‐lipoic acid. The PS‐ b ‐PEtLp synthesized via base‐catalyzed ring‐opening polymerization thiol‐terminated PS. Adhesion tests showed that with cylindrical nanostructures exhibited higher strength than lamellar structures. Importantly, dynamic disulfide bonds PEtLp enable reversible adjustable under UV light. Upon irradiation, decreases by approximately half, facilitating easy separation adherends. Additionally, selective depolymerization block achieves 100% conversion, enabling recovery monomer (EtLp) macroinitiator (thiol‐terminated PS). This study introduces sustainable, degradable, reusable adhesive renewable resources, providing promising solution challenges associated traditional petroleum‐based adhesives.
Язык: Английский
Процитировано
0
Journal of the American Chemical Society, Год журнала: 2025, Номер unknown
Опубликована: Апрель 10, 2025
α-Lipoic acid (αLA) is an attractive building block for medical adhesives. However, due to poor water solubility of αLA and high hydrophobicity poly(αLA), elevated temperatures, organic solvents, or complex preparations are typically required obtain deliver αLA-based adhesives biological tissue. Here, we report powder low-viscosity liquid superglues that polymerize bond rapidly upon contact with wet A monomeric mixture αLA, sodium lipoate, activated ester lipoic was used formulate the versatile Stress-strain measurements confirmed flexibility adhesive. Moreover, a small molecule regenerative drug successfully incorporated into released from adhesive without altering physical properties. In vitro in vivo studies developed their cell tissue compatibility, biodegradability, potential sustained delivery. inherent ionic nature adhesives, they demonstrated electric conductivity sensitivity deformation, allowing development tissue-adherent strain sensor.
Язык: Английский
Процитировано
0
Chinese Journal of Polymer Science, Год журнала: 2025, Номер unknown
Опубликована: Апрель 10, 2025
Язык: Английский
Процитировано
0
Coordination Chemistry Reviews, Год журнала: 2025, Номер 537, С. 216679 - 216679
Опубликована: Апрель 11, 2025
Язык: Английский
Процитировано
0