聚松香乙二醇酯丙烯酯及其氧化物的合成

以松香、乙二醇为原料,合成松香乙二醇单酯,再与丙烯酸反应,得到松香乙二醇酯丙烯酯;然后在催化剂的作用下催化聚合得到聚松香乙二醇酯丙烯酯,再在催化剂作用下用过氧化氢氧化聚松香乙二醇酯丙烯酯。测定了聚松香乙二醇酯丙烯酯及其氧化物的比表面积、孔径、溶解性和差热等各种性能。BET法测定聚松香乙二醇酯丙烯酯的比表面、孔径分别为 0.3185 m²/g, 60~90 nm;聚松香乙二醇酯丙烯酯氧化物的比表面积、孔径分别为 9.3669 m²/g, 50~90 nm,说明所合成的聚合物为大孔树脂;聚松香乙二醇酯丙烯酯及其氧化物在乙醇中的溶解度分别为每 100 mL 0.0272 和 0.00482 g;聚松香乙二醇酯丙烯酯的交联度为 12.3%;两种聚合物失重 5% 时分别对应的温度为259.8和 307.8℃;在30~550℃的温度范围内样品没有明显的软化点;相对分子质量测定结果表明聚松香乙二醇酯丙烯酯氧化物的相对分子质量在 25000以上。

Study on the Syntheses of Polymer of Rosin Glycol Acrylic Ester and Its Oxide

The syntheses of polymer of rosin glycol acrylic ester and its oxide have been reported in the present paper. Rosin glycol ester was synthesized from rosin and glycol. Then, it was reacted with acrylic acid to form rosin glycol acrylic ester, which was polymerized to polymer of rosin glycol acrylic ester under the existence of catalyst. The compound was oxidized with H₂O₂. The specific surface area, pore diameter, acid value, solubility and thermal performance for both compounds were investigated. The specific surface areas and pore diameter are 0.3185 m²/g, 60-90 nm for polymer of rosin glycol acrylic ester and 9.3669 m²/g, 50-90 nm for its oxide(BET measurement), which means the synthesized polymer is a macroporous resin. The solubility for the polymer and its oxide are 0.0272 g/100 mL and 0.00482 g/100 mL in ethanol. The degree of crosslinking is 12.3%;both polymers have good thermal stabilities. No softening point was observed within 30-550℃. The relative molecular mass for the oxide is over 25000.