摘要
高分子/表面活性剂复合体系在各领域中有着广泛应用,研究它们之间的相互作用在理论和应用上都具有重要意义。文章研究了聚乙烯醇(PVA)/十二烷基硫酸钠(SDS)复合体系,探讨了添加SDS后PVA溶液粘度行为的变化。(1)加入SDS使PVA溶液粘度增大,最初SDS浓度较小时粘度增幅较小,接着粘度增幅变大,最后粘度增幅变小至粘度基本不变。(2)PVA/SDS溶液的ηsp/C-C基本呈线性关系,但在低浓度区却偏离线性,而且PVA/SDS溶液比PVA溶液线性偏离程度更大些。(3)加入SDS使PVA溶液特性粘数增大,PVA分子尺寸增大,均方末端距最多约大1.50倍。
Polymer/surfactant compound system is widely used in various fields, and the research of their interaction is important on theory and practice. Viscosity characteristics of polyvinyl alcohol （PVA）/sodium dodecyl sulfate（SDS） compound system is studied in this article. （1）The viscosity of PVA solution increases with adding SDS. The increase of viscosity is from slow to fast , then from fast to slow when the concentration of SDS increasing. （2）ηsp/C--C of PVA/SDS solution is mainly linear, and is more nonlinear than PVA solution in low concentration area. （3）Intrinsic viscosity and PVA molecular dimension of PVA solution increases with adding SDS, and the mean square end-to- end distance increases 1.50 times.
出处
《云南师范大学学报（自然科学版）》
2005年第5期58-61,共4页
Journal of Yunnan Normal University:Natural Sciences Edition
