孪尾型丙烯酰胺DiC_(12)AM的合成及其在胶束溶液中的增溶性能

由十二胺和1-溴代十二烷合成了二正十二胺(DiC12),然后使二正十二胺与丙烯酰氯(AC)均相反应,合成了孪尾型丙烯酰胺N,N-二正十二烷基丙烯酰胺(DiC12AM),并考察了反应时间与配料比对收率的影响。测定了产物的FTIR光谱与1H-NMR谱,对DiC12AM的化学结构进行了确认。采用浊度法测定了DiC12AM在十二烷基硫酸钠(SDS)与表面活性单体2-丙烯酰胺基十二烷磺酸钠(NaAMC12S)胶束溶液中的增溶性能。实验结果表明,DiC12AM的合成比较容易,在低温下采用n(DiC12):n(AC)=1:1.20的摩尔比,反应6h,可高收率(91%)地制得DiC12AM。由于SDS胶束的聚集数较大,故DiC12AM在SDS胶束溶液中的增溶量较高,相比之下,表面活性单体NaAMC12S胶束的聚集数较小,故DiC12AM在NaAMC12S胶束溶液中的增溶量较低。

Synthesis and solubilization property in micellar solutions for acrylamide with twin-tailed type

N,N-di-n-dodecylamine(DiC12) was synthsized from n-dodecylamine and 1-bromododecan,and then acrylamide with twin-tailed type,N,N-di-dodecylacylamide(DiC12AM) was synthesized by using acryloyl acid N,N-di-n-dodecylamine as raw materials.The effects of reaction time and feed ratio on the yield of DiC12AM were examined.The chemical structure of the target product was confirmed using FTIR and 1H-NMR spectra.The solubilization properties of DiC12AM in the micellar solutions of sodium dodecylsulfate(SDS) and a surface-active monomer,sodium 2-acrylamido-dodecyl sulfonate(NaAMC12S)were studied with tuebidimetric determination.The results show that it is easy to synthesize DiC12AM,and the yield can get up to 91.5% at 0～5℃,at a feed ratio of DiC12∶AC = 1∶1.20(mol∶mol) and for 6h.The solubilized amount of DiC12AM in the micellar solution of SDS is much greater than of in the micellar solution of NaAMC12S.