Ethanol Dosage in Hydro-Alcoholic Gels

A method of determination of the ethanol content in hydro-alcoholics is reported. Based on quantitative ¹HNMR (q¹HNMR), the results are obtained rapidly and accurately. The method is available for viscous solutions to which other simpler technics do not apply.

Ethanol Dosage in Hydro-Alcoholic Gels

A method of determination of the ethanol content in hydro-alcoholics is reported. Based on quantitative ¹HNMR (q¹HNMR), the results are obtained rapidly and accurately. The method is available for viscous solutions to which other simpler technics do not apply.

Synthesis of Diamine Containing Chalcone Structure by Nitroammoniation and Aldol Condensation

In this paper, the structure of the photosensitive diamines was designed and the method of synthesizing such diamines was investigated. The 1-(3-aminophenyl)-3-(4-aminophenyl)-2-propen-1-one analyzed by elemental analysis and infrared analysis was synthesized through two-step experiments with Aldol condensation and Nitroammoniation process. Through the experiment the optimum reaction conditions are raw material ratio of 1:1, anhydrous ethanol dosage of 60 ml, 10 % NaOH dosage of 10 ml and reaction temperature of 25°C for 4h. The yield was about 55.4 %.

Preparation and Development of Bioglass by Sol-Gel Method

Bioglass is a good bioactive material and has been used in many medical fields, include drug delivery systems, non-load-bearing implants and bone cements. Sol-gel is a good method in the preparation of coating materials. It also can be used in the preparation of bioactive glass. In this paper, the principles and technical processes are introduced. The effects on characteristics of bioactive glasses of the factors such as H2O dosage, ethanol dosage, gel temperature and activator are analyzed in detail. The research progress in preparation of sol-gel bioactive glasses is summarized. Finally the development foreground of sol-gel bioglass is also expected.