【摘要】 通过缩水甘油苯基醚低聚物的磺化反应,合成了一种新型磺酸聚醚型高分子表面活性剂———低聚缩水甘油苯基醚磺酸钠(SPPGE),并用红外、核磁等对产物结构进行了详细表征。同时,测定了不同质量浓度、不同无机盐含量SPPGE水溶液的动态表面张力(DST),并用Rosen经验方程和Word-Tordai方程对DST进行了分析。结果表明:SPPGE溶液浓度越高,动态表面活性越高,DST达到界平衡越快,DST曲线越低;在研究的浓度范围内,吸附初期属扩散控制吸附,后期属混合动力吸附,且浓度越高,吸附势垒εa越大,有效扩散系数Deff越小;对同一浓度溶液,添加电解质使DST曲线下降,吸附机理不变,但后期吸附势垒εa增大,有效扩散系数Deff减小。更多还原

【Abstract】 <Abstrcat>Sodium poly-phenyl-glycidyl ether sulfonate（SPPGE） was synthesized via the sulfonation of poly-phenyl-glycidyl ether by sulfuric acid.The product was characterized by IR and¹HNMR.The dynamic surface tension（DST）of SPPGE aqueous solution with different mass concentration as well as different inorganic salt content was measured by hanging plate method.The profile of DST was analyzed using Rosen empirical equation and Word-Tordai equation.The results show that the higher the SPPGE concentration,the higher the dynamic surface tension,together with the faster the DST achieving interface equilibrium,and the lower the DST curve.Within the scope of the SPPGE concentration under the study,in the beginning period,the adsorption is under diffusion control regime,while in the later period,it belongs to mixed kinetic adsorption,and the higher the SPPGE concentration,the bigger the adsorption barrier ε_a together with the smaller the effective diffusion coefficient D_eff.At a certain SPPGE concentration,the addition of electrolyte will cause the DST lower while the adsorption regime remains unchanged,but at later period,the adsorption barrier ε_a becomes bigger and the effective diffusion coefficient D_eff becomes smaller.更多还原