丙烯海松酸聚乙二醇酯的合成及聚集行为

以松香和丙烯酸为单体合成了丙烯海松酸，利用气相色谱-质谱联用技术（GC-MS）对合成的丙烯海松酸进行了表征。以丙烯海松酸和聚乙二醇2000为单体采用条件温和的steglich酯化法合成了两亲性的丙烯海松酸聚乙二醇酯，并应用红外（FT-IR）、凝胶渗透色谱（GPC）和热重（TG）研究了该物质的结构和性能。结果表明：丙烯海松酸聚乙二醇酯数均相对分子质量为4 700，多分散系数为1.2，分解温度在308~410℃范围内。采用表面张力和芘稳态荧光法测定了该物质的临界胶束质量浓度（CMC），其CMC为1 g/L。用共振光散射（RLS）、动态光散射（DLS）和扫描电镜（SEM）法研究了丙烯海松酸聚乙二醇酯水溶液的聚集行为，结果表明：1 g/L的丙烯海松酸聚乙二醇酯水溶液在高于聚集温度74℃时胶束聚集，随着溶液的质量浓度由1 g/L增加到1.5 g/L时，聚集温度由74℃降低到65℃；1 g/L丙烯海松酸聚乙二醇酯水溶液的温度由25℃升高到85℃时，水合粒子平均直径（D_h）由295 nm增加到1 056 nm。

Synthesis and Aggregation Behavior of Acrylicpimaric Acid Polyglycol Ester

Acrylpimaric acid was obtained with rosin and acrylic acid as raw materials and characterized by gas chromatography-mass spectrometry technology(GC-MS). Acrylicpimaric acid polyglycol ester was synthesized by steglich esterification method under mild conditions with acrylicpimaric acid and polyglycol(PEG 2000) as monomers. Structure and properties of the substance were studied by infrared, gel permeation chromatography(GPC), and thermogravimetric(TG). The average-number molecular weight of the substance was 4 700 with the polydispersity index of 1.2. The decomposition temperature of acrylicpimaric acid and polyglycol ester was 308-410℃. The critical micelle concentration(CMC) of acrylicpimaric acid polyglycol ester in water was 1 g/L by surface tension and steady-state fluorescence method. The aggregation behaviors of acrylicpimaric acid polyglycol ester in water were investigated by rayleigh light scattering(RLS), dynamic light scattering(DLS) and scanning electron microscopy(SEM) techniques. The results indicated that the stabilized micelle of 1 g/L acrylicpimaric acid polyglycol ester aggregated as the temperature was higher than the aggragation temperature(74℃) and the aggregation temperature decreased from 74℃ to 65℃ as the solution concentration increased from 1 g/L to 1.5 g/L. And as the temperature of acrylicpimaric acid polyglycol ester solution increased from 25℃ to 85℃, the average diameter of hydrate particle(D_h) increased from 295 nm to 1 056 nm.