The aggregation behaviors of a diblock copolymer and a triblock copolymer of poly(2-ethyl-2-oxazoline) (PEOX) and polyethylene oxide (PEO) in aqueous solutions were investigated mainly by static and dynamic light scattering and infrared spectroscopy. PEOX is a thermoresponsive polymer that is soluble in water at room temperature, but insoluble above 60 °C, and it forms aggregates with poly(methacrylic acid) (PMAA) by using intermolecular hydrogen bonds. The structures of the aggregates of PEOX, which were formed due to the thermoresponsive interactions and intermolecular hydrogen bonds were estimated by measuring the aqueous solutions and precipitates formed by mixing solution of the block copolymers of PEOX and PEO and solution of PMAA at various mixing ratios and temperatures. The differences between the structure formed by mixing aqueous solution of the block copolymers of PEOX and PEO and that of PMAA mixed at 25 °C and measured at 65 °C and that formed in aqueous solutions mixed and measured at 65 °C were investigated to elucidate the influences of thermoresponsive interactions and intermolecular hydrogen bonds. There were no significant differences between the aggregates formed by the diblock copolymer and PMAA mixed at different temperatures, and the aggregates formed by the triblock copolymer and PMAA mixed at 65 °C had higher molar mass than that mixed at 25 °C.

主要通过静态和动态光散射和红外光谱研究了聚（2-乙基-2-恶唑啉）（PEOX）和聚环氧乙烷（PEO）的二嵌段共聚物和三嵌段共聚物在水溶液中的聚集行为。PEOX是一种热响应性聚合物，常温下可溶于水，60℃以上不溶，通过分子间氢键与聚甲基丙烯酸（PMAA）形成聚集体。由于热响应相互作用和分子间氢键形成的 PEOX 聚集体的结构是通过测量 PEOX 和 PEO 的嵌段共聚物溶液与 PMAA 溶液以各种混合比例混合形成的水溶液和沉淀来估计的，温度。考察了PEOX和PEO的嵌段共聚物水溶液与PMAA在25°C下混合并在65°C下测得的结构与在65°C下混合并在65°C下测得的水溶液中形成的结构之间的差异，以阐明热响应相互作用和分子间氢键的影响。二嵌段共聚物和PMAA在不同温度下混合形成的聚集体之间没有显着差异，三嵌段共聚物和PMAA在65℃混合形成的聚集体的摩尔质量高于25℃混合形成的聚集体。