A Bis-quaternary Ammonium Salt from Rosin and Its Application
In the paper, rosin was used as raw material to produce a rosin Gemini surfactant, bisquaternary ammonium salt (BQA). The preparing process could be described as: firstly, the rosin was modified to be added a carboxylic acid group by reaction with acrylic acid; secondly, the intermediate was obtained from Ⅰ reaction of the modified rosin with epoxy chlorpropane; thirdly, the intermediate reacted with dimethylamine in the mole ratio of 1:3, the reaction time of 4.5h at 80 ℃. By this way the intermediate Ⅱ was synthesized. Finally the intermediate Ⅱ reacted with the epoxy chloropropane and distilled water in the mole ratio of 1:3:3, the reaction time of 4.5h at 80. Liquid chromatography (LC) ℃ analysis proved that the purity of the product was 90.8％ and the yield of BQA was 67％. The chemical structure of this rosin derivative as a BQA was also conformed by Fourier Transform infrared spectroscopy (FTIR), 1H nuclear magnetic resonance (NMR) analysis. As Gemini surfactant, the surface activities of the product were characterized. Its critical micellar concentration (CMC) was 4.0×10-4mol/l. Its foaming power of the product was 250mm at 0s, 200mm at 5min. The emulsifying power of the product was 56min. Since the product has good surface activities and it is obtained easily from rosin. It has a promising future as a surfactant.
bis-quaternary ammonium salt rosin Gemini surfactant synthesis characterization
Zhi-jun CHEN Shu-jun LI Yan JIN Bing TIAN Li-jun ZHANG
Key laboratory of Biobased material Science and technology of Ministry of Education,Northeast Forest Key laboratory of Biobased material Science and technology of Ministry of Education, Northeast Fores
国际会议
南京
英文
480-486
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）