Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер 702, С. 135103 - 135103
Опубликована: Авг. 13, 2024
Язык: Английский
ACS Nano, Год журнала: 2025, Номер unknown
Опубликована: Март 19, 2025
The biofoam exhibits significant advantages in environmental and sustainability aspects as an effective alternative to petrochemical foams; however, its limited mechanical stability seriously hinders practical application. Herein, a synergistic strategy combining structural bionics supramolecular cross-linking is proposed fabricate biodegradable lignocellulosic featuring "pillar-spacer" microlattice texture, utilizing multiscale cellulose fibers (CFs) sodium lignin sulfonate (SLS) inspiration from the natural cuttlebone. Attributed robust interfacial bonding between nanoscale SLS, akin "rebar cement", complemented by support microfibers, CFs/SLS with low density of 62 mg cm-3 compression modulus 6.56 MPa, nearly four times higher than that CF (1.67 MPa). Additionally, it excellent thermal insulation, boasting remarkably conductivity 0.046 W m-1 K-1, outperforming recently reported biofoams plastic foams. Moreover, integrating functional SiO2 nanocoating results SiO2@CFs/SLS foam, which delivers satisfactory flame retardation smoke inhibition without compromising strength or insulation. This work highlights potential for developing sustainable, eco-friendly, mechanically applications.
Язык: Английский
Процитировано
1
Macromolecules, Год журнала: 2024, Номер unknown
Опубликована: Авг. 10, 2024
Elastomer materials featuring covalent cross-links deliver essential elastic performance for various applications. Despite their benefits, challenges like the need toxic chemical additives, emissions of harmful vapors, and difficulties in recycling these continue to pose environmental health concerns. Vitrimers emerge as an option, allowing recyclability vulcanized elastomers through use dynamic bonds. However, occur, it is generally necessary external catalysts, which generate negative side effects on material cause problems. In this study, we propose a novel approach address by incorporating bonds into ethylene-glycidyl methacrylate (E-GMA)/zinc ionomer (EMAZn) blends, yielding catalyst-free vitrimers. Notably, zinc acts similar transesterification catalyst, facilitating material's adaptability without additional chemicals. Through series reactions including esterification subsequent transesterification, E-GMA/EMAZn blends are transformed vitrimers capable rearranging topological structure at elevated temperatures. This endows with reshaping abilities, all making them environmentally favorable, practical, scalable. Utilizing two commercially produced polymers large scale ensures cost-effectiveness avoids slow expensive processes. Methodologically, experiments were carried out evaluate properties prepared Results revealed significant findings: stress relaxation analysis demonstrated rapid adaptation applied forces (G(t) < 100 s); cross-linking showed activation energies between 23.5 81 kJ/mol; self-healing achieved up 94% recovery least cross-linked blend; shape memory assessments exhibited maximum 88% ability maintain multiple temporary shapes. Additionally, confirmed feasibility sustainable reprocessing. work presents promising solution associated traditional rubber/elastomer methods, offering potential greener more efficient rubber materials.
Язык: Английский
Процитировано
3
Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161065 - 161065
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
0
Polymer Composites, Год журнала: 2025, Номер unknown
Опубликована: Апрель 7, 2025
Abstract Lightweight particleboards have great application potential in construction, packaging, decoration, and transport industries. This study aims to develop lightweight using epoxidized soybean oil foamable adhesives. simple strategy is expected not only reduce the consumption of isocyanate‐based adhesives but also offer a feasible solution for optimizing performance panels. Green low‐viscosity polyols (Epols) were prepared from (ESO) ethylene glycol (EG) by ring‐opening reaction. Foamable with controllable properties mixing polymeric methylene diphenyl diisocyanate (pMDI) Epols. The results show that optimal foam has exceptional mechanical strength, thermal properties, desirable pore structure. All synergistic foaming curing process, which highly matched particleboard preparation. Compared pristine pMDI as adhesive, adhesive superior bonding water resistance (MOR 11.4 MPa, MOE 1900 IB 0.56 24 h TS 6.6%) at same density (0.55 g/cm 3 ). microscopic confirmed cured forms robust three‐dimensional porous cross‐linked network structure core layer, resulting improved panel properties. reduces effectively improves panels, provides new pathway developing particleboards. Highlights been polyol pMDI. fully compatible preparation process. while improving performance. Prepared shows stronger specific bending strength reported 3D
Язык: Английский
Процитировано
0
Industrial Crops and Products, Год журнала: 2024, Номер 222, С. 120121 - 120121
Опубликована: Ноя. 23, 2024
Язык: Английский
Процитировано
1
ACS Applied Polymer Materials, Год журнала: 2024, Номер unknown
Опубликована: Дек. 3, 2024
Combining high heat resistance and green sustainability is a great challenge in developing shape memory epoxy resins. Herein, starting from synthesizing fully biobased trifunctional compound (ER), kind of resin system (EFTx, where x the molar ratio carboxyl to groups) developed. The effects on structure properties EFTx resins were systematically investigated. Results show that cured have excellent resistance, mechanical properties, performance, recycle ability. As increases, glass transition temperature (Tg) initial thermal decomposition (Tdi) decrease while both self-healing efficiency remolding increase. Tg storage modulus each are much higher than those reported Among resins, EFT1.0 shows best-integrated performance; specifically, its Tg, Tdi, tensile strength, as 156 °C, 293 40.99 MPa, 90.5%, respectively, meanwhile it also has outstanding property reflected by fixation (Rf = 100%) recovery (Rr 97.8%) under bend-recovery experiments well Rf (93.2%) Rr (66.1%) after four cycles. integrated performance attributed their unique structures combine rigid stilbene structure, furan ring, abundant ester bonds.
Язык: Английский
Процитировано
1
Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер 702, С. 135103 - 135103
Опубликована: Авг. 13, 2024
Язык: Английский
Процитировано
0