文献类型：期刊文献

中文题名：PS-10对松香的浅色化作用机理初探

英文题名：STUDY ON MECHANISM OF DECOLORIZATION OF ROSIN BY PS-10

作者：高宏[1] 饶小平[1] 商士斌[1] 王先凯[1] 宋湛谦[1]

第一作者：高宏

机构：[1]中国林业科学研究院林产化学工业研究所

年份：2005

卷号：25

期号：B10

起止页码：23-26

中文期刊名：林产化学与工业

外文期刊名：Chemistry & Industry of Forest Products

收录：CSTPCD;;EI(收录号：2005479497732);Scopus(收录号：2-s2.0-27744598942);CSCD:【CSCD_E2011_2012】；

基金：国家"十五"攻关滚动项目(2001BA50114B)国际引进948项目(2004-04-53)

语种：中文

中文关键词：浅色剂PS-10;松香;歧化反应;抗氧化

外文关键词：decolorating agent PS-10; rosin; disproportionation; antioxidation

分类号：TQ351.472

摘要：研究了浅色剂PS-10对松香的浅色作用机理。时反应前后松香物理指标及其化学 组成分析发现:随着PS-10用量增加、反应温度升高或反应时间延长,松香颜色变浅。加入 PS-10反应后松香的枞酸型树脂酸含量由70．6％下降至18．8％。去氲枞酸从7．3％增加至 30．6％,二氢树脂酸从0增加至12．2％。结果表明,PS-10对松香歧化反应起了催化剂的作 用。同时,PS-10在松香脱色过程中,发挥了抗氧剂的作用,它的抗氧活性表现在酚羟基和硫原子上,酚羟基 具有捕捉游离基的功能,而硫醚可以分解氢过氧化物,因而表现出分子内协同作用。
Mechanism of decolorization of rosin by PS-10 was studied. Analysis of the product showed that color of rosin became lighter with the increase of PS-10 dosage,reaction temperature and time. Relative content of abietic-type resin acid decreased from 70.6 % to 18.8 %, and relative content of dehydroabietic acid and hydrogenated resin acids increased from 7.3 % to 30.6 % and from zero to 12.2 % ,respectively. It was proved that PS-10 was a catalyst responsible for disproportionation of rosin, and it was also an antioxidant responsible for decolorization of rosin. Phenolic hydroxyls and sulfur atoms exhibited their antioxidative activities synergistically. Phenolic hydroxyls could capture free radicals, while thioether could decompose peroxide.