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林产化学与工业 ›› 2009, Vol. 29 ›› Issue (3): 6-12.

• 研究报告 • 上一篇    下一篇

改性松香-缩合单宁酯的制备及性质

段文贵1, 耿哲1, 张加研2, 申长茂1   

  1. 1. 广西大学化学化工学院, 广西 南宁 530004;2. 西南林学院 木质科学与装饰工程学院, 云南 昆明 650224
  • 收稿日期:2008-03-14 修回日期:1900-01-01 出版日期:2009-06-30 发布日期:2009-06-30

Preparation and Properties of Modified Rosin-condensed Tannins Esters

DUAN Wen-gui1, GENG Zhe1, ZHANG Jia-yan2, SHEN Chang-mao1   

  1. 1. College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;2. Faculty of Wood Science and Decoration Engineering, Southwest Forestry College, Kunming 650224, China
  • Received:2008-03-14 Revised:1900-01-01 Online:2009-06-30 Published:2009-06-30

摘要: 在微波辐照下,以吡啶作催化剂,通过缩合单宁与改性松香酰氯的O-酰化反应,以改性松香和不同级分或树种的缩合单宁为原料,合成了一系列改性松香-缩合单宁酯。利用UV、IR、TG-DTA和元素分析等方法对目标产物进行了分析和表征,并测试了它们的抗氧化性及其钠盐的表面活性。结果表明,改性松香-缩合单宁酯的油溶性普遍好于缩合单宁,在花生油中表现出良好的抗氧化性,且去氢枞酸-毛杨梅树皮缩合单宁酯的抗氧化性能最佳。改性松香-缩合单宁酯的钠盐比缩合单宁的钠盐具有更优良的表面活性,其降低表面张力能力强弱顺序为:HR-WT钠盐>HR-ET钠盐>DR-ET钠盐>DR-WT钠盐>DHA-WT钠盐≈DHA-MET钠盐>DHA-ET钠盐>ET钠盐;不同松香改性产物钠盐的表面张力和临界胶束浓度有一定差异,但差别不大,其中氢化松香改性产物钠盐的表面活性最好,歧化松香改性产物钠盐的表面活性次之,去氢枞酸改性产物钠盐的表面活性最差。改性松香-缩合单宁酯钠盐对苯的乳化力都超过了 60min,具有很好的乳化能力。改性松香-缩合单宁酯钠盐起泡比顺序为:氢化松香-黑荆树树皮缩合单宁酯钠盐>歧化松香-黑荆树树皮缩合单宁酯钠盐>去氢枞酸-黑荆树树皮缩合单宁酯钠盐>去氢枞酸-毛杨梅树皮缩合单宁酯钠盐>毛杨梅树皮缩合单宁钠盐。

关键词: 改性松香, 缩合单宁, 改性松香-缩合单宁酯, 合成

Abstract: Under microwave irradiation and in the presence of pyridine as catalyst, a series of modified rosin-condensed tannins esters were synthesized by O-acylation reaction between condensed tannins and modified rosin chloride. The target products were analyzed and characterized by means of UV, IR, TG-DTA and elemental analysis. In addition, antioxidant activity and surface activity of the esters were determined. The test results showed that modified rosin-condensed tannins estershave better oil-solubility in peanut oil and better antioxidant activity than those of condensed tannins, and that of dehydroabietic acid-condensed tannins ester (DHA-MET) was the best of all. The surface activity was evaluated by surface tension, emulsifying power and foaming ability. The results indicated that sodium salts of the modified rosin-condensed tannins esters, especially sodium salts of thehydrogenated rosin-condensed tannins esters,had the superior surface activity.

Key words: modified rosin, condensed tannins, modified rosin-condensed tannins esters, synthesis

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