| 松香分析中影响不皂化物含量的关键因素及机理研究 |
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| 引用本文： | 赵振东,何祖群,李冬梅,王婧,毕良武,古研.松香分析中影响不皂化物含量的关键因素及机理研究[J].林产化学与工业,2006,26(3):1-5. |
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| 作者姓名： | 赵振东 何祖群 李冬梅 王婧 毕良武 古研 |
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| 作者单位： | 1. 中国林业科学研究院,林产化学工业研究所;国家林业局,林产化学工程重点开放性实验室,江苏,南京,210042
2. 中国金龙松香集团公司,北京,100029 |
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| 基金项目： | 国家科技基础平台建设资助项目(2004DEA70900)的部分内容，国家标准制修订项目(无编号)中的部分内容 |
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| 摘 要： | 研究了在脂松香分析测定过程中影响松香不皂化物含量测定的关键因素及其影响机理,讨论了树脂酸在皂化过程中的形态变化特征及其导致不皂化物需要进行树脂酸校正操作和计算的理论依据。结果表明,马尾松松香的不皂化物中易挥发组分最多,湿地松松香的不皂化物含量较高,易挥发组分含量也相对较高,加勒比松松香和南亚松松香不皂化物中可挥发性物质较少。随着烘干温度的提高,松香中不皂化物的含量降低,但高温可能明显地使松香不皂化物中易氧化的醛类物质等发生了部分氧化,致使4种松香不皂化物的酸价则呈增加的趋势,但是,松香不皂化物中存在的酸性应主要来源于由强碱和弱酸形成的松香树脂酸盐类与松香树脂酸之间的电离平衡反应。
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| 关 键 词： | 不皂化物 松香分析 树脂酸 电离平衡 |
| 文章编号： | 0253-2417（2006）03-0001-05 |
| 收稿时间： | 01 10 2006 12:00AM |
| 修稿时间： | 2006年1月10日 |
Studies on Key Factors and Mechanisms Influencing the Content of Unsaponifiable Matter during Rosin Analysis |
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| ZHAO Zhen-dong,HE Zu-qun,LI Dong-mei,WANG Jing,BI Liang-wu,GU Yan.Studies on Key Factors and Mechanisms Influencing the Content of Unsaponifiable Matter during Rosin Analysis[J].Chemistry & Industry of Forest Products,2006,26(3):1-5. |
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| Authors: | ZHAO Zhen-dong HE Zu-qun LI Dong-mei WANG Jing BI Liang-wu GU Yan |
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| Institution: | 1. Institute of Chemical Industry of Forest Products,CAF;Key and Open Lab. on Forest Chemical Engineering,SFA, Nanjing 210042, China; 2. China Gold Dragon Rosin Group Corp., Beijing 100029, China |
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| Abstract: | Key factor and mechanism influencing the content of unsaponifiable matter were investigated,during rosin analyisis(using) ether extraction from its soap solution.The morphological variation characteristics of resin acid,as well as titration correction of the unsaponifiable matter during rosin saponification were discussed theoretically.As results,there are the highest content of volatile matter in the unsaponifiable matter of masson pine rosin,high contents of unsaponifiable matter and volatile matter in slash pine rosin,and less contents of volatile matter in P.caribaea Morelet and P.latteri Masson rosins.The content of unsaponifiable matter becomes decreasing while drying temperature is increasing.On the contrast,acid values of the unsaponifiable matter of these 4 kinds of rosin get increasing because high drying temperature results in autoxidation of diterpene aldehydes.However,the acidity of the unsaponifiable matter would mainly originated from the ionization equilibrium between resin acid and its(potassium) salt.Therefore,the content of unsaponifiable matter must be corrected during rosin analysis. |
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| Keywords: | unsaponifiable matter rosin analysis resin acid ionization equilibrium |
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