文章摘要
徐亚洲,陈玉湘.水性大豆油-松香基超支化聚酯的合成与表征[J].精细化工,2019,36(7):
水性大豆油-松香基超支化聚酯的合成与表征
Synthesis and product characterization of waterborne soybean oil-rosin based hyperbranched polyester
投稿时间:2018-12-04  修订日期:2019-02-21
DOI:
中文关键词: 松香  大豆油  超支化聚酯  水性树脂  功能材料
英文关键词: rosin  soybean oil  hyperbranched polyester  waterborne resin  functional material
基金项目:国家科技支撑计划(2015BAD15B08)
作者单位E-mail
徐亚洲 中国林业科学研究院林产化学工业研究所 2426805321@qq.com 
陈玉湘 中国林业科学研究院林产化学工业研究所 cyxlhs@126.com 
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中文摘要:
      以松香、大豆油、顺丁烯二酸酐和丙三醇为原料制备水性大豆油-松香基超支化聚酯,采用FTIR,GPC,TG对聚酯的结构进行了表征。研究表明,制备该聚酯的较佳条件为:大豆油投料量为松香质量的50%,顺丁烯二酸酐投料量为松香质量的20%,加入丙三醇使物料羟羧比为0.86,恒温酯化反应温度250℃,恒温反应时间为3h。该条件下得到超支化聚酯数均相对分子质量(Mn)1776,重均相对分子质量(Mw)5305;酸值为49.9mg/g,软化点为67℃,乳化3h可得黄色透明胶体溶液;TG结果表明,该聚酯分解主要集中在350~450℃,表明其具有较高的热稳定性能。该超支化聚酯胶体溶液粒径分布图显示整个体系的平均粒径为22.14nm,说明该聚酯在水中乳化分散性能良好。
英文摘要:
      The waterborne soybean oil-rosin-based hyperbranched polyester was prepared from rosin, soybean oil, maleic anhydride and glycerol and characterized by FTIR, GPC and TG. The results showed that the preferred conditions for the preparation of the polyester are as follows: the dosage of soybean oil was 50% by mass of rosin, that of maleic anhydride was 20% by mass of rosin, and the hydroxyl-carboxyl ratio of raw materials was 0.86 by adding glycerol, esterification reaction temperature was 250℃, and reaction time was 3 h. Under these conditions, the number average molecular weight (Mn) of the prepared hyperbranched polyester was 1776, the weight average molecular weight (Mw) was 5305, the acid value was 49.9 mg/g and softening point was 67℃. The yellow transparent colloid solution was obtained after 3 hours of emulsification. TG results indicated that the decomposition of polyester was mainly concentrated in the ranging from 350℃ to 450℃, indicating that it had higher thermal stability. The particle size distribution of the hyperbranched polyester colloidal solution demonstrated that the average particle size of the whole system was 22.14 nm, which revealed that the polyester had good emulsifying and dispersing properties in water.
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