106-78-5Relevant articles and documents
Rational design, synthesis and evaluation of new azido-ester structures as green energetic plasticizers
Fareghi-Alamdari, Reza,Sheibani, Nasser,Zohari, Narges
, p. 12695 - 12706 (2020)
Computer-aided molecular design (CAMD) is a well-known tool for the theoretical assessment of chemical structures before their experimental synthesis. In this study, we used this method to consider the important criteria for a chemical structure as an energetic plasticizer for an energetic azido binder. The number of new azido-ester structures were initially designed, and their physicochemical and energetic properties were determinedviatheoretical calculation by molecular dynamics simulations and machine learning-based methods. Considering the balances between several criteria, two of these theoretical chemical structures (including GTAA (glyceryl tris(azidoacetate)) and TEGBAA (triethyleneglycol bis(azidoacetate))) were then selected, synthesized, and characterized. The comparison of experimental and theoretical results to evaluate the physicochemical properties of these new azido-ester plasticizers showed an acceptable agreement between the two methods. Finally, the compatibility and efficiency of these two new azido-ester plasticizers on the rheological and thermal properties of glycidyl azide polymer (GAP) were investigated using rheometry and DSC analyses, and compared with some common energetic plasticizers. The results confirmed that these two new azido-esters are appropriate plasticizers for GAP since they exhibited higher safety over comparable plasticizers, in addition to the real performance.
Antibacterial activities of five cationic gemini surfactants with ethylene glycol bisacetyl spacers
Guo, Shengnan,Sun, Xiaowen,Zou, Qichao,Zhang, Jinzhi,Ni, Hong
, p. 1089 - 1097 (2014)
A series of cationic gemini surfactants containing two dimethylalkylammonium chains linked by ethylene glycol bisacetyl spacers were synthesized [G m-AnA-m, G = gemini surfactant, m = 12 (-C12H25), 14 (-C14H29), or 16 (-C16H33), A = acetyl, and n = 2, 3, or 4 is the number of ethylene glycol units in the spacers]. Because of the inductive effect of the oxygen atom in the spacer, acylation can take place using chloroacetyl chloride instead of bromoacetyl bromide which helps to limit the use of environmentally harmful reagents. Critical micelle concentrations were determined using conductivity measurements. The antibacterial activities of the surfactants against Gram-positive bacterium Staphylococcus aureus and Gram-negative bacterium Escherichia coli were evaluated from the minimum inhibitory concentration (MIC), minimum bacterial concentration, a time-kill study, and the inhibitory zone. Increasing the length of the spacer did not result in an obvious change of antibacterial activity. However, increasing the length of the alkyl chain apparently increased the antibacterial activity against S. aureus but decreased the antibacterial activity against E. coli. The G12-A2A-12 surfactant had the lowest CMC of 1.26 mmol L-1 and exhibited the best antibacterial activity with a MIC of 32 μg mL-1 toward S. aureus and 64 μg mL-1 toward E. coli in the presence of 105 CFU of bacteria. This work indicated that these cationic gemini surfactants have potential applications as antibacterial agents and emulsifiers.
(meth)acrylate compound
-
Paragraph 0066-0068, (2021/03/11)
The invention relates to a (meth)acrylate compound as well as a preparation method and application thereof. The compound has the following structure shown in the specification, and the preparation method is simple. The compound has the advantages of low odor or no odor, low irritation or no irritation, low viscosity, high reactivity and moderate glass transition temperature of the obtained polymer, can participate in free radical polymerization, has favorable flexibility and adhesivity, and can be used in light-cured ink, paint and adhesives.