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首页> 外文期刊>Journal of Applied Polymer Science >Hydrophobic Microblock Length Effect on the Interaction Strength and Binding Capacity Between a Partially Hydrolyzed Microblock Hydrophobically Associating Polyacrylamide Terpolymer and Surfactant
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Hydrophobic Microblock Length Effect on the Interaction Strength and Binding Capacity Between a Partially Hydrolyzed Microblock Hydrophobically Associating Polyacrylamide Terpolymer and Surfactant

机译：疏水微嵌段长度对部分水解的微嵌段疏水缔合聚丙烯酰胺三元共聚物与表面活性剂之间相互作用强度和结合能力的影响

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摘要

Poly(acrylamide/sodium acrylate/N-dodecyl acrylamide)s [poly(AM/NaAA/C_(12)AM)s] with different hydrophobic microblock lengths (N_H's) were prepared by the micellar copolymerization of acrylamide and sodium acrylate with a low amount of N-dodecyl acrylamide (0.2 mol %), and the molecular structure was characterized by Fourier transform infrared spectroscopy, ~1H-NMR, and static light scattering. A combination of experiments involving viscosity measurement, fluorescence, and conductometry was applied to investigate the effect of N_H on the interaction strength and binding capacity between poly(AM/NaAA/C_(12)AM)s and C_(12)H_(25)SO_4Na [sodium dodecyl sulfate (SDS)]. The viscosity, I_3/I_1 (the intensity ratio of the third vibrational band to the first band of pyrene molecules), and conductivity of the mixed system of copolymers with SDS all had different variation trends with the concentration of SDS. The binding capacity of the copolymers with SDS was calculated according to quantitative differences between the critical micelle concentration of the pure SDS solution and the mixed system. All of the results show that the interaction strength of SDS with the copolymers rose, and the binding capacity decreased with increasing N_H.
机译：聚丙烯酰胺/丙烯酸钠/丙烯酸钠的胶束共聚制备了具有不同疏水微嵌段长度（N_H）的聚（丙烯酰胺/丙烯酸钠/ N-十二烷基丙烯酰胺）[聚（AM / NaAA / C_（12）AM）s]量为N-十二烷基丙烯酰胺（0.2mol％），并通过傅里叶变换红外光谱，〜1 H-NMR和静态光散射来表征分子结构。结合粘度测量，荧光和电导法等实验，研究了N_H对聚（AM / NaAA / C_（12）AM）s与C_（12）H_（25）的相互作用强度和结合能力的影响SO_4Na [十二烷基硫酸钠（SDS）]。粘度I_3 / I_1（third分子的第三振动带与第一the带的强度比）和含SDS的共聚物的混合体系的电导率随SDS的浓度变化趋势不同。根据纯SDS溶液和混合体系的临界胶束浓度之间的定量差异，计算共聚物与SDS的结合能力。所有结果表明，SDS与共聚物的相互作用强度增加，并且随着N_H的增加，结合能力降低。

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