Results 11 to 20 of about 530 (176)
Nitrogen Configuration of Polybenzoxazine Carbide
High Temperature Materials and Processes, 2015 Carbon materials should have specific centers for its functionalities. In this study, the specific centers of polybenzoxazine carbides were studied for the first time. Three classical benzoxazine monomers were chose as the object.
Zhang Huachuan +4 more
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Dynamic Exchange Reactions as Self-Blowing Agents for the Production of Reprocessable Foams. [PDF]
Angew Chem Int Ed EnglThis study introduces an innovative approach to designing self‐blown foams by leveraging the irreversible and self‐catalyzed transesterification of alkylester which release alcohol gas as blowing agents. The morphology and thermo‐mechanical properties of these foams can be precisely tailored by modifying the precursor structure. Remarkably, they can be
Adjaoud A +6 more
europepmc +2 more sources
Metal Complexes of the Porphyrin-Functionalized Polybenzoxazine [PDF]
Polymers, 2022 New porphyrin-functionalized benzoxazine (Por-BZ) in high purity and yield was synthesized in this study based on 1H and 13C NMR and FTIR spectroscopic analyses through the reduction of Schiff base formed from tetrakis(4-aminophenyl)porphyrin (TAPP) and salicylaldehyde and the subsequent reaction with CH2O.
Guohu Zhang +6 more
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Frontiers in Chemistry, 2020 Olefin bonds participate in co-reaction with the benzoxazine functionality of the monomer and are one of the strategies used to affect the crosslink density of a polybenzoxazine network.
Divambal Appavoo +2 more
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Metal Ion-Catalyzed Low-Temperature Curing of Urushiol-Based Polybenzoxazine
Frontiers in Chemistry, 2022 In this work, urushiol-based polybenzoxazine is cured by the Lewis acid (FeCl3, AlCl3, and CuCl2) at low temperature instead of high thermal curing temperature. The effect of the Lewis acid on structures and properties of the polymers is revealed.
Wen Yang +7 more
doaj +1 more source
Macromolecular Materials and Engineering, 2023 Porous oxygen‐doped carbon materials based on the copolymers of a diacetal‐type benzoxazine (ACE‐a) and melamine with different ratios are prepared by a facile template‐free method.
Hanwu Wang +3 more
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Polybenzoxazine-Based Nanofibers by Electrospinning [PDF]
, 2017 In this chapter recent progress in the production of polybenzoxazine-based nanofibrous mats by electrospinning is highlighted. The benzoxazine monomers could easily form thermosetting polybenzoxazines by in situ thermally initiated ring-opening polymerization, hence, they are promising materials for both the surface modification of polymeric ...
Ertas Y., Uyar T.
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Egyptian Journal of Petroleum, 2019 A series of polybenzoxazine-clay nanocomposites with various organoclay contents (3, 5, 10, and 20 wt%) were prepared by the one-shot procedure. from organo-montmorillonite (OMMT) and bifunctional benzoxazine, namely, bis-(3-dodecyel-3,4-dihydro-2H-1,3 ...
Salwa.M. El-Mesallamy
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Journal of Aeronautical Materials, 2017 Benzoxazine resin is a new generation of anti-ablation resin with high char yield and high-temperature oxidation resistance. Using high temperature vulcanized silicon rubber as ablation resistance matrix and 2,2'-(3-methyl-4-dihydro-1,3,2-benzoxazine ...
DONG Yimin, YIN Zhengshuai, LI Yong
doaj +1 more source
Dynamic Covalent Polymeric Foams: En Route to a Sustainable Lightness [PDF]
ChemSusChemDynamic covalent polymer foams (DCPFs) combine lightweight cellular structures with adaptive polymer networks, enabling self‐healing, reprocessability, and recyclability. By integrating reversible covalent bonds into foam architectures, these materials open new pathways toward sustainable porous polymers within a circular materials economy.
Adjaoud A +3 more
europepmc +2 more sources