P(AM-NVP-DMDA)疏水缔合水溶性共聚物的研究

采用自由基水溶液共聚合法制备了Ｐ（ＡＭ－ＮＶＰ－ＤＭＤＡ）疏水缔合水溶性共聚物。对共聚物的溶液性能进行了研究，包括盐效应、粘温关系、流变性能、热稳定性、与碱、表面活性剂的相互作用、稀溶液性质等。共聚物分子中由于引入了较多的疏水基团而具有较强的疏水缔合效应，在聚合物浓度较低时具有较高粘度。ＮＶＰ结构单元的引入可适当提高共聚物溶液的热稳定性。对共聚物溶液的电镜分析结果表明，在其水溶液中存在着微相分离结构，它对共聚物溶液的增粘起着重要作用。

Study on the P(AM-NVP-DMDA) Hydrophobically Associating Water-Soluble Copolymer

A new kind of hydrophobically associating water-soluble copo1ymer P(AM-NVP-DMDA) was synthesized by free radical copolymerization. Synthesis, structure and solution properties of P(AM-NVP-DMDA) terpolymer were studied including its electrolyte effect, rheological behavior, temperature dependence of viscosity, dilute solution property, and the polymer-alkali, polymer-surfactant interaction.The copolymer shows strong hydrophobic effect,and the copolymer aqueous brine solution exhibits high vicosity at low polymer concentration.Incorporation of N-vinyl-pyrrolidone into the copolymer causes an improvement in themal stabilility of the copolymer. The transmission electron photomicrograph analysis of the copolymer indicates that the presence of the microphase seperation of the copolymer in aqueous solution plays an important role in the viscosification property of copolymer.