编号
020031104
推送时间
20211004
研究领域
林产化工
年份
2021
类型
期刊
语种
英语
标题
Synthesis of Maleic-Modified Rosin Ester from Pine Rosin
来源期刊 IOP Conference Series: Materials Science and Engineering
期
第311期
发表时间
19050713
关键词
Rosin modification;
Esterification;
Glycerol;
Diels-Alder;
Maleic;
摘要
Rosin is the major component of Pine sap that has a composition of up to 90%. Rosin is an organic compound that consists of diterpene tricyclic compounds with carboxyl functional group. The presence of this functional group makes rosin becoming acidic and corrosive. Furthermore, rosin also has double bonds that are prone to oxidation when exposed to air. To improve the weaknesses, modifications shall be done. Esterification reaction can be done through transforming into a more stable functional group, ie. ester, while Diels-Alder reaction will saturate the double bonds into more stable cyclic compounds. The results indicate that synthesizing maleic modified rosin ester could improve the properties of pine rosin. Esterification was done using a ratio of glycerol to rosin of 1:3 mol. Esterification was done for 6 hours at 250°C at room and vacuum pressure. The Diels-Alder reaction was done using maleic anhydride at 1:1 stoichiometric ratio to rosin, reacted at 150°C for 1 hour at vacuum condition
服务人员
尚玮姣
服务院士
宋湛谦
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