By LEI Fu-hou, BAI Li-juan, YAO Xing-dong, XIE Bin, CHEN Yan-wen
(College of Chemistry & Ecological Engineering,Gunagxi University for Nationalities, Nanning 530006, China)
Abstract: 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 0.318 5 m2/g, 60-90 nm for polymer of rosin glycol acrylic ester and 9.366 9 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 0.027 2 g/100 mL and 0.004 82 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 25 000.
Key words: rosin;synthesis;polymer of rosin glycol acrylic ester;oxide