Abstract: Using oleic acid as raw materials，the polyester polyols were prepared via hydroxylation，modification and esterification. The influences of reaction conditions，such as the molar ratio of alcohol and acid，atmospheric pressure reaction temperature and time，stress reaction temperature and time，the catalyst dosage，were investigated. The relationship between esterification reagent ratio and property of polyols was also studied. The infrared spectrum(IR)，gel permeation chromatograph (GPC)，and thermogravimetric analysis (TGA) were used to measure structure，molecular weight and thermal stability of the products systematically. The results showed that the optimal reaction condition was obtained as following，the used catalyst ZnO dosage was 0.8% in the raw materials，the molar ratio of alcohol and acid was 1.1∶1，the atmospheric pressure reaction time was 90min at 210℃ and stress reaction time was 120min at 180℃.

Key words: biomass, polyester polyols, synthesis, modification, esterification, biomass, polyester polyols, synthesis, modification, esterification

摘要： 以油酸为原料，经羟基化、酸酐改性、酯化合成油酸基聚酯多元醇，考察了摩尔比、常压反应温度时间、减压反应温度时间、催化剂用量等因素对酯化反应的影响，研究了不同组合酯化试剂对多元醇性能的影响。采用红外光谱（FT-IR）、高效凝胶色谱（GPC）、热重（TGA）对多元醇的结构、相对分子质量、热稳定性进行了表征。结果表明，最佳酯化条件为醇酸比n(二甘醇)∶n(羟基油酸)= 1.1∶1，催化剂ZnO量为0.8%，常压、210℃下反应90min，再在180℃下减压反应120min。

关键词: 生物质, 聚酯多元醇, 合成, 改性, 酯化, 生物质, 聚酯多元醇, 合成, 改性, 酯化