摘要
以P2O5/SiO2催化十二酸直接与二苯醚发生F—C酰基化反应合成了十二酰基二苯醚中间体,然后与氯磺酸磺化合成了一种油脂基表面活性剂十二酰基二苯醚磺酸钠,并用红外光谱和核磁共振氢谱对产物结构进行了表征。测定了十二酰基二苯醚磺酸钠的克拉夫特点(T K)、表面张力、临界胶束浓度、耐电解质性能、钙离子稳定性、钙皂分散力(LSDP)、去污力、润湿力和泡沫性等物化性能。结果表明,十二酰基二苯醚磺酸钠具有极好的低温溶解性(T K<0℃),极其优异的耐电解质性能,即能够在饱和食盐水、饱和氯化钙、饱和盐酸和高浓度氢氧化钠中溶解,因而具有取代长链烷基二苯醚磺酸盐的潜力;还表现出很强的钙皂分散力(LSDP=6.5)以及与LAS相近的去污力,因而具有用作钙皂分散剂的潜力。
Dodecanoyl diphenyl ether was synthesized by Friedel-Crafts acylation from lauric acid and diphenyl ether catalyzed by P2O5/SIO2, and then it was sulfonated by chlorosulfonic acid to yield an oil-based surfactant, sodium dodecanoyl diphenyl ether sulfonate. The structure of the products was characterized by means of FTIR and 1HNMR, and the results indicate that both the intermediate and the final product were obtained as desired. The performance of the surfactant, including Krafft point （ TK ） , surface tension, critical micelle concentration, resistance to electrolyte, calcium stability, lime soap dispersing power（ LSDP）, detergency, wetting time and foam ability ,were measured. The experimental results indicate that the surfactant possessed excellent low temperature solubility （TK 〈 0 ℃ ） and outstanding electrolyte resistance, that is, it was able to solve in solutions of saturated sodium chloride, saturated calcium chloride, saturated hydrochloric acid or of high concentration of sodium hydroxide, respectively. Therefore, it has the potential to replace alkyl diphenyl ether sulfonates. The surfactant is also a potential lime soap dispersing agent because it has very strong lime soap dispersing power（ LSDP = 6. 5 ） and good detergency comparable to that of LAS.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2014年第2期163-167,共5页
Fine Chemicals
基金
"十二五"国家科技支撑计划项目(2011BAE30B00)~~
关键词
十二酰基二苯醚磺酸钠
表面活性剂
油脂基
酰基化
性能
sodium dodecanoyl diphenyl ether sulfonate
surfactants
oil base
acylation
performance
