我们的网站为什么显示成这样?

可能因为您的浏览器不支持样式,您可以更新您的浏览器到最新版本,以获取对此功能的支持,访问下面的网站,获取关于浏览器的信息:

|Table of Contents|

松香甘油酯聚氧乙烯醚的合成及其性能(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2003年02期
Page:
25-28
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
Synthesis and Performances of PolyethoxylatedRosin Acid Glycerol Ester
Article ID:
1000-2006(2003)02-0025-04
Author(s):
ZHOU Yonghong12XIE Hui2SONG Zhanqian11.Institute of Chemical Industry of Forest Products CAFNanjing 210042China;2.Nanjing University of TechnologyNanjing 210009China)
Keywords:
RosinGlycerol esterPolyoxylethylene etherSurfactants
Classification number :
TQ351
DOI:
10.3969/j.jssn.1000-2006.2003.02.006
Document Code:
A
Abstract:
Partially esterification of rosin with glycerol and addition reaction of rosin glycerol ester with epoxy ethane were investigated.The suitable reaction conditions were obtained:the ratio of rosin to glycerol for esterification was 1∶2(mol/mol),reaction temperature of esterification was 260~270 ℃,amount of catalyst of ZnO for esterification was 0.05% (based on rosin(g)),reaction time of esterification was 4.5 h.Amount of catalyst KOH for addition of rosin ester with epoxy ethane was 0.6% (based on rosin glycerol ester(g)),reaction temperature of addition was 150 ℃.Surface physicochemical properties of the products were measured.The results showed that surface tension (δ) varied from 3.29×10-2 to 3.83×10-2 N/m,critical micelle concentration(CMC) from 2.2×10-4 to 5.2×10-4 mol/L,lime soap dispersing power(LSDP) from 4.2% to 18.5%,emulsifying power(EP, with turpentine) from 74 s to 190 s,cloud point from 17 ℃ to 81 ℃.The relations between surface physicochemical properties of the products and polymerization degree of ethylene oxide(EO) were first studied systematically.With the increasing of polymerization degree(n) of EO,the surface activity was rising firstly,and then tending towards stability or dropping a little,the application properties,such as EP and LSDP,became better with increasing of n,and reached balance when n=10.

References

-

Last Update: 1900-01-01