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恒定部分水解聚丙烯酰胺 (HPAM )、聚乙烯吡咯烷酮 (PVP)浓度时 ,PVP/SDBS混合溶液的粘度随SDBS浓度的增加在一浓度 (C1 )处陡然增大 ,到另一更高浓度 (C2 )后粘度不再增加 ,出现一个平台。相应混合溶液的表面张力曲线出现有两个明显的转折点T1 和T2 ,T1 处SDBS浓度与C1 处SDBS浓度相同 ,SDBS浓度小于T1 时 ,混合溶液表面张力低于单独SDBS溶液表面张力 ,从T1 开始 ,混合溶液表面张力大于单独SDBS溶液表面张力 ,并出现一个平台 ,T2 处SDBS浓度与C2 相同。到T2 时 ,混合溶液表面张力趋于与单独SDBS溶液表面张力相同 ;HPAM /SDBS混合溶液的粘度随SDBS浓度增加单调下降 ,溶液表面张力 /SDBS浓度曲线形状与纯SDBS溶液相同 ,仅表面张力值略有降低 ;溶液中 ,NaCl浓度为 0 .42mol/L ,SDBS浓度为 1 .67× 1 0 - 3mol/L时 ,SDBS发生沉淀 ,同时加入 0 .41 7g/LPVP时 ,溶液澄清 ,而加入 0 .41 7g/LHPAM时 ,SDBS仍然沉淀。
When the concentration of HPAM and PVP was constant, the viscosity of PVP / SDBS mixed solution increased sharply at one concentration (C1) with the increase of SDBS concentration, while the viscosity of PVP / ) After the viscosity no longer increases, there is a platform. There are two obvious turning points T1 and T2 in the surface tension curve of the corresponding mixed solution. The concentration of SDBS in T1 is the same as the concentration of SDBS in C1. When the concentration of SDBS is less than T1, the surface tension of mixed solution is lower than that of SDBS alone. , The surface tension of the mixed solution is greater than the surface tension of SDBS solution alone, and there is a platform where the concentration of SDBS at T2 is the same as that of C2. At T2, the surface tension of the mixed solution tended to be the same as the surface tension of the SDBS solution alone. The viscosity of the HPAM / SDBS mixed solution monotonically decreased with increasing SDBS concentration. The surface tension / SDBS concentration curve of the solution was the same as the pure SDBS solution. Slightly decreased. When the concentration of NaCl was0.42mol / L and the concentration of SDBS was1.67 × 10-3 mol / L, SDBS was precipitated in the solution, while the solution was clarified by0.441 7g / LPVP, 0 .41 7g / LHPAM, SDBS still precipitate.