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

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