Results 61 to 70 of about 3,396 (226)

Insightful characterization of sesamol-based polybenzoxazines: Effect of phenol and amine chain type on physical and nanomechanical properties

open access: yesPolymer Testing, 2022
We report the synthesis of sesamol-based polyethyleneimine (PEI) polybenzoxazines. Their physico-chemical features have been compared with other aliphatic diamine chains and the influence on thermo-mechanical properties of the phenol substituent was ...
Mădălina I Necolau   +4 more
doaj   +1 more source

Novel Functional Materials via 3D Printing by Vat Photopolymerization

open access: yesAdvanced Functional Materials, Volume 36, Issue 32, 20 April 2026.
This Perspective systematically analyzes strategies for incorporating functionalities into 3D‐printed materials via Vat Photopolymerization (VP). It explores the spectrum of achievable functionalities in recently reported novel materials—such as conductive, energy‐storing, biodegradable, stimuli‐responsive, self‐healing, shape‐memory, biomaterials, and
Sergey S. Nechausov   +3 more
wiley   +1 more source

Benzoxazines with enhanced thermal stability from phenolated organosolv lignin

open access: yes, 2016
Lignin-based benzoxazines are synthesized for the first time using organosolv lignin as the phenolic component and aniline or propargyl amine as the amine component through the Mannich condensation reaction.
Ohashi, Seishi   +6 more
core   +1 more source

Synthesis of a New Series of N,N’-Dimethyltetrahydrosalen (H2 [H2Me]salen) Ligands by the Reductive Ring-Opening of 3,3'-Ethylene-bis(3,4-dihydro-6-substituted-2H-1,3-benzoxazines)

open access: yesMolecules, 2010
A new series of N,N'-bis(2'-hydroxy-5'-substituted-benzyl)-N,N´-dimethylethane-1,2-diamines (N,N'-dimethyltetrahydrosalen) ligands were prepared in good yield by reduction of the respective 3,3'-ethylene-bis(3,4-dihydro-6-substituted-2H-1,3-benzoxazine ...
Augusto Rivera   +4 more
doaj   +1 more source

Multi‐Scale Structural Insights Into Amphiphilic Model PEG–PCL Co‐Networks From LS and SANS

open access: yesMacromolecular Chemistry and Physics, Volume 227, Issue 7, 14 April 2026.
We present a multiscale structural study of amphiphilic PEG–PCL co‐networks combining light scattering in THF and small‐angle neutron scattering in D2O. This dual‐solvent approach reveals how solvent quality, polymer volume fraction, and PEG/PCL interactions govern static and dynamic correlation lengths, network homogeneity, and nanoscale domain ...
Sebastian Seitel   +6 more
wiley   +1 more source

Advanced Polymers from Simple Benzoxazines and Phenols by Ring-Opening Addition Reactions

open access: yes, 2020
Simple benzoxazines were mixed and reacted with various phenolics such as phenol, p-nitrophenol, p-cresol, 1,3-dihyroxybenzene (resorcinol), 1,3,5-trihydroxybenzene (phloroglucinol), and N-(2-hydroxy­phenyl)­benzamide.
Zeynep Deliballi (8656197)   +5 more
core   +1 more source

Synthesis and Fungicidal Activity of Novel 2,3-Disubstituted-1,3-benzoxazines

open access: yesMolecules, 2012
A series of new 2,3-disubstituted-3,4-dihydro-2<em>H</em>-1,3-benzoxazines were prepared in moderate to excellent yields by aza-acetalizations of aromatic aldehydes with 2-(<em>N</em>-substituted aminomethyl)phenols in the ...
Xiaoming Ou   +6 more
doaj   +1 more source

Benzoxazine/amine-based polymer networks featuring stress-relaxation and reprocessability

open access: yesFrontiers in Soft Matter, 2023
Amines as additives in benzoxazines are known to beneficially affect the polymerization temperature and furthermore to allow for partially reversible reaction steps yielding however a non-dynamic polybenzoxazine network. This contribution proves that the
Lea Pursche   +6 more
doaj   +1 more source

Dynamic Covalent Polymeric Foams: En Route to a Sustainable Lightness

open access: yesChemSusChem, Volume 19, Issue 5, 13 March 2026.
Dynamic 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.
Antoine Adjaoud   +3 more
wiley   +1 more source

Identification of Novel Class of Triazolo-Thiadiazoles as Potent Inhibitors of Human Heparanase and their Anticancer Activity

open access: yesBMC Cancer, 2017
Background Expression and activity of heparanase, an endoglycosidase that cleaves heparan sulfate (HS) side chains of proteoglycans, is associated with progression and poor prognosis of many cancers which makes it an attractive drug target in cancer ...
C. P. Baburajeev   +9 more
doaj   +1 more source

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