We present a detailed solid-state NMR characterization of the molecular dynamics of tert-butyl alcohol (TBA) confined inside breathing metal-organic framework (MOF) MIL-53(Al). 27 Al MAS NMR has demonstrated that TBA adsorption induces the iX phase of MIL-53 material with partially shrunk ...
Polyallyl homopolymer having a molecular weight of at least 10<SP>4</SP> is produced by effecting polymerization of allyl alcohol monomer in the presence of an inorganic complexing agent which forms a co-ordination bond with the functional group of allyl alcohol under the action of a radical ...
The hydroxyl end group of the resulting polymer was converted to trimethylsiloxyl group by using hexamethyldisilazane. On the other hand, poly(vinyloxy-t-butyldimethylsilane) (PVOTBDMS) was obtained by aldol- type of group transfer polymerization. Under the presence of ZnBr2 or TiCl4 as the ...
For the two tripods, ratios of T⁎/Tg=1.14 and T⁎/Tg=1.13 were observed respectively, consistent with the ratio observed for many side-chain LC polymers (and other LC systems), and consistent with the ratio where a dynamic crossover is typically observed also for non-LC glass-formers...
MOLECULAR SIEVES Preparation Products And Raw materials Raw materials Preparation Products 2-Fluoro-6-formylpyridine C-(3,4-DIHYDRO-2H-BENZO[1,4]OXAZIN-3-YL)-METHYLAMINE 2-AMINO-4-PHENYL-6-(TRIFLUOROMETHYL)PYRIMIDINE 1-METHYL-PROP-2-YNYLAMINE 2-AMINO-6-T-BUTYL-4-(TRIFLUOROMETHYL)PYRIMIDINE ...
Moreover, densities and sound velocities of acetaminophen in aqueous NADESs were measured at T = (298.15–313.15) K and these data were used to derive the limiting apparent molar volumes and the apparent molar compressibilities of the transfer. The thermodynamic properties show that the ...
To explore the potential cytoprotective effects of NMR-HA, we first examined whether auto/paracrine actions of HA secreted by NMR skin fibroblasts (NSF) protect them from tert-butyl hydroperoxidase (tBHP)-induced cell death. tBHP is a widely used oxidative stressor that produces peroxyl/alkoxyl ...
19. The process according to claim 18 wherein the polymerization is conducted in a solvent for the reaction mixture, and wherein the reaction mixture leaving the reactor has a copolymer concentration of about 3% to 10% on a weight of polymer per weight of solvent basis. ...
Remarkable effect of hydrogen-bonding interaction on stereospecificity in the radical polymerization of N-vinylacetamide -vinylacetamide (NVA) in toluene at low temperatures was investigated. It was found that the addition of Lewis bases or alcohol compounds significantly inf... T Hirano,Y Okumura,M...
For instance, a typical low molecular weight liquid epoxy resin having a molecular weight of about 380 can be advanced by reacting with bisphenol A at a weight ratio of about 66/33 weight parts epoxy resin/bisphenol A in about 15 weight parts of ethylene glycol monobutyl ether solvent and ...