大孔网状聚马来松香乙二醇酯的合成及表征

Synthesis and Characterization of The Macroreticutar Polymer of Maleated Rosin Glycol Ester

以松香和乙二醇为原料,制备了聚合马来松香乙二醇酯,对产物的红外、紫外光谱进行了分析,测定了聚合物的酸值,溶解度,交联度,热失重,分解温度.聚合马来松香乙二醇酯的交联度为56.2%,在无水乙醇中的溶解度为0.0738g/100ml,酸值为31.6mgKOH/g,没有明显的软化点,分解变化温度202℃-209℃;BET法测定聚合马来松香乙二醇酯的孔径分布微孔大部分分布在60-90nm.结果表明所合成的聚合物为大孔网状聚合物.

The polymer of maleated rosin glycol ester was prepared from maleated rosin and glycol by using zinc oxide as catalyst.IR and UV of the polymer were analyzed,and it＇s acidity,solubility,degree of cross-linking,DTA and decompose temperature were measured.The degree of cross-linking of the polymer of maleated rosin glycol ester was 56.2%,solubility in anhydrous ethanol was 0.0738 g/100 ml,acidity value was 31.6 mgKOH/g.Oxidized decompose temperature was 202 ℃-209 ℃.Differential thermal curves from DTA spectrogram had neither thermopositive peak nor thermonegative peak,which showed that the sample had no obvious softening point within 30 ℃-550 ℃.Pore structure of the polymer were measured by BET method.The majority of pore size was between 60-90 nm.Results showed that the polymer prepared was macroreticular resin.