نتایج جستجو برای: epoxy ring opening
تعداد نتایج: 183008 فیلتر نتایج به سال:
The photo-reversible [4πs+4πs] cycloaddition reaction of pendant anthracene moieties represents a convenient strategy to impart wavelength dependent properties into hydrogenated carboxylated nitrile butadiene rubber (HXNBR) networks. The present article provides the 1H NMR data on the reaction kinetics of the side chain functionalization of HXNBR. 2-(Anthracene-9-yl)oxirane with reactive epoxy ...
We report an investigation of the influence of block copolymer architectures on formation of nanophases in epoxy thermosets via reactioninduced microphase separation approach. Toward this end, three binary block copolymers composed of polystyrene (PS) and poly(ε-caprolactone) (PCL) were synthesized via the combination of ring-opening polymerization (ROP) and atomic transfer radical polymerizati...
To increase thermal stability for high performance applications of epoxy resin system – Diglycidal Ether of bisphenol-A (DGEBA), the epoxy backbone is modified to incorporate aromatic and heterocyclic rings i.e. the oxazolidone ring. FTIR studies were conducted during the synthesis at various intervals. Appearance of peak at 1754 cm confirms the presence of oxazolidone ring and absence of peak ...
Carbon nanofibers encapsulating Si nanoparticles (CNFs/SiNPs) were prepared via an electrospinning method and chemically functionalized with 3-aminopropyltriethoxysilane (APS) to be grafted onto graphene oxide (GO). As a result, the thin and flexible GO, which exhibits a negative charge in aqueous solution, fully wrapped around the APS-functionalized CNFs with a positive surface charge via elec...
Copolymerization of 2-hydroxyethylmethacrylate (HEMA) with glycidylmethacrylate (GMA) in the presence of α-α'-azoisobisbutyronitrile (AIBN) resulted in the formation of hydrogel films carrying reactive epoxy groups. Thirteen kinds of different molecules with pendant NH2 group were used for modifications of the p(HEMA-GMA) films. The NH2 group served as anchor binding site for immobilization of ...
A method was developed for the conjugation of aminopropyl spacer-bearing carbohydrates with epoxy groups on crown nanoparticles consisting a copolymer N-vinyl-2-pyrrolidone and allyl glycidyl ether in basic buffer, opening prospects design vectorized nanocomposite drug forms. conjugate above trisaccharide A, synthetic blood group antigen, synthesized. Meglumine used to bind any unreacted epoxid...
After phenylmaleimido group was successfully incorporated into bisphenol-A type epoxy resins (B-13 ) to result in compound possessing both oxirane ring and maleimide reactive groups. The cured maleimide epoxy samples are obtained by thermally curing of the maleimide epoxy (MIE) compounds with aliphatic long chained amines such as Tetraethylenepentamine (TEPA), Bishexamethylenetriamine (BHMT), 2...
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