The surface tension, foaming and viscosity for C7F15COO^-N^＋H（C2H4OH）χ（C2Hs）3-x and C8F17SO3- N^＋H（C2H4OH）χ（C2H5）3-χ （x = 0, 1, 2, 3） were measured to systematically study the effects of hydroxyl groups...The surface tension, foaming and viscosity for C7F15COO^-N^＋H（C2H4OH）χ（C2Hs）3-x and C8F17SO3- N^＋H（C2H4OH）χ（C2H5）3-χ （x = 0, 1, 2, 3） were measured to systematically study the effects of hydroxyl groups in organic ammonium counterions on the properties of perfluorooctanoates and perfluorooctanesulfonates. The results showed that the critical micelle concentration （cmc） and the surface tension at cmc （γcmc） were both increased with the increase of number of hydroxyl groups （χ） in the two series. The perfluorooctanesulfonate had smaller cmc but higher γ=cmc than perfluorooctanoate with the same counterion. The minimum molecular area of surface adsorption （Amin） of C8F17zSO3^-N^＋H（C2H4OH）χ（C2H5）3-χ were 0.64, 0.57, 0.63 and 0.72 nm^2 while the Amin values of C7F15COO^-N^＋H（C2H4OH）χ（C2H5）3-χ were 0.61, 0.62, 0.61 and 0.71 nm^2 when χ = 0, 1, 2 and 3, respectively. For the investigated systems of surfactants, the results of foam expansion ratio agreed with those of surface activity, while the 25% drainage time were consistent with the results of viscosity.展开更多
采用二甲基长链烷基叔胺、环氧氯丙烷为主要原料,在盐酸水溶液条件下,"一锅法"合成系列1,3-二(烷基二甲基氯化铵)异丙醇双子季铵盐〔m-3(OH)-m(m=C_8、C_(10)、C_(12)、C_(14)、C_(16)、C_(18))〕;以熔点检测m-3(OH)-m型双子...采用二甲基长链烷基叔胺、环氧氯丙烷为主要原料,在盐酸水溶液条件下,"一锅法"合成系列1,3-二(烷基二甲基氯化铵)异丙醇双子季铵盐〔m-3(OH)-m(m=C_8、C_(10)、C_(12)、C_(14)、C_(16)、C_(18))〕;以熔点检测m-3(OH)-m型双子季铵盐纯度;以C12-3(OH)-C12为例,采用FTIR、1HNMR对其结构进行表征;分别测定不同浓度下各化合物表面张力,0.1%(质量分数)水溶液下的起泡能力、乳化能力。结果表明,随着m的变化,各化合物表面活性、起泡能力及乳化能力均呈现规律性变化;按照m=C_8、C_(10)、C_(12)、C_(14)、C_(16)、C_(18)的顺序,化合物CMC分别为0.09、0.075、0.03、0.024、0.026、0.14 mmol/L,γCMC分别为54.01、32.56、25.74、29.41、30.51、30.28 m N/m;起泡能力和起泡稳定性分别在m=C_(10)及m=C_(12)表现出较好效果;乳化能力在m=C14时效果较好。展开更多
以α,ω-含氢硅油(α,ω-PHMS)和烯丙基环氧基聚醚(APEE)为原料,无水乙醇为溶剂,在铂催化下,通过硅氢加成合成环氧基聚醚聚硅氧烷(EPEPS),再与N,N-二甲基十二烷基叔胺(DMA12)进行开环反应,制得一种新型季铵盐型有机硅双子表面活性剂(QSG...以α,ω-含氢硅油(α,ω-PHMS)和烯丙基环氧基聚醚(APEE)为原料,无水乙醇为溶剂,在铂催化下,通过硅氢加成合成环氧基聚醚聚硅氧烷(EPEPS),再与N,N-二甲基十二烷基叔胺(DMA12)进行开环反应,制得一种新型季铵盐型有机硅双子表面活性剂(QSGS).用红外光谱(IR)对QSGS和EPEPS的结构进行了表征,并对QSGS的临界胶束浓度(cmc)、表面张力、发泡力、耐酸碱盐稳定性和在硬水中的稳定性等进行了测定.结果表明:QSGS水溶液的cmc为1.6 g/L,cmc处表面张力(γcmc)为25.5 m N/m.质量分数为0.5%的QSGS水溶液发泡力为1.63,5 min稳泡性为0.158,在硬水中的稳定性为5级.QSGS溶液具有很好的耐酸、耐碱、耐盐等化学稳定性.展开更多
基金supported by the Applied Chemistry Key Subject of Gansu Province (No. GSACKS20130113)Youth Science and Technology Innovation Project of Longdong University (No.XYZK1512, No.XYZK1511)
文摘The surface tension, foaming and viscosity for C7F15COO^-N^＋H（C2H4OH）χ（C2Hs）3-x and C8F17SO3- N^＋H（C2H4OH）χ（C2H5）3-χ （x = 0, 1, 2, 3） were measured to systematically study the effects of hydroxyl groups in organic ammonium counterions on the properties of perfluorooctanoates and perfluorooctanesulfonates. The results showed that the critical micelle concentration （cmc） and the surface tension at cmc （γcmc） were both increased with the increase of number of hydroxyl groups （χ） in the two series. The perfluorooctanesulfonate had smaller cmc but higher γ=cmc than perfluorooctanoate with the same counterion. The minimum molecular area of surface adsorption （Amin） of C8F17zSO3^-N^＋H（C2H4OH）χ（C2H5）3-χ were 0.64, 0.57, 0.63 and 0.72 nm^2 while the Amin values of C7F15COO^-N^＋H（C2H4OH）χ（C2H5）3-χ were 0.61, 0.62, 0.61 and 0.71 nm^2 when χ = 0, 1, 2 and 3, respectively. For the investigated systems of surfactants, the results of foam expansion ratio agreed with those of surface activity, while the 25% drainage time were consistent with the results of viscosity.
文摘采用二甲基长链烷基叔胺、环氧氯丙烷为主要原料,在盐酸水溶液条件下,"一锅法"合成系列1,3-二(烷基二甲基氯化铵)异丙醇双子季铵盐〔m-3(OH)-m(m=C_8、C_(10)、C_(12)、C_(14)、C_(16)、C_(18))〕;以熔点检测m-3(OH)-m型双子季铵盐纯度;以C12-3(OH)-C12为例,采用FTIR、1HNMR对其结构进行表征;分别测定不同浓度下各化合物表面张力,0.1%(质量分数)水溶液下的起泡能力、乳化能力。结果表明,随着m的变化,各化合物表面活性、起泡能力及乳化能力均呈现规律性变化;按照m=C_8、C_(10)、C_(12)、C_(14)、C_(16)、C_(18)的顺序,化合物CMC分别为0.09、0.075、0.03、0.024、0.026、0.14 mmol/L,γCMC分别为54.01、32.56、25.74、29.41、30.51、30.28 m N/m;起泡能力和起泡稳定性分别在m=C_(10)及m=C_(12)表现出较好效果;乳化能力在m=C14时效果较好。
文摘以α,ω-含氢硅油(α,ω-PHMS)和烯丙基环氧基聚醚(APEE)为原料,无水乙醇为溶剂,在铂催化下,通过硅氢加成合成环氧基聚醚聚硅氧烷(EPEPS),再与N,N-二甲基十二烷基叔胺(DMA12)进行开环反应,制得一种新型季铵盐型有机硅双子表面活性剂(QSGS).用红外光谱(IR)对QSGS和EPEPS的结构进行了表征,并对QSGS的临界胶束浓度(cmc)、表面张力、发泡力、耐酸碱盐稳定性和在硬水中的稳定性等进行了测定.结果表明:QSGS水溶液的cmc为1.6 g/L,cmc处表面张力(γcmc)为25.5 m N/m.质量分数为0.5%的QSGS水溶液发泡力为1.63,5 min稳泡性为0.158,在硬水中的稳定性为5级.QSGS溶液具有很好的耐酸、耐碱、耐盐等化学稳定性.
