摘要
从歧化松香中分离出去氢枞酸，并以此为原料合成了三种新型的两性表面活性剂，Ｎ－（３－去氢枞酰氧－２－羟）丙基－Ｎ－甲基氨基乙酸钠，Ｎ－｛Ｎ′－［（３－去氢枞酰氧－２－羟）丙基］胺乙基｝氨基乙酸钠。Ｎ－｛Ｎ′－［（３－去氢枞酰氧－２－羟）丙基］双胺乙基｝氨基乙酸钠。其结构通过波谱和元素分析得以证实，并测定了其表面物理化学性质如克拉夫特点，临界胶束浓度和分子横截面积。此外还根据相分离模型计算得出胶束化过程的标准焓变（△Ｈｍ）、自由能变（△Ｇｍ）和熵变（△Ｓｍ）。
Three new amphoteric surfactants namely sodium N-( 3-dehydroabietoxy-2-hydroxy)propyl-N-methylglycine,sodium N-{N′-[( 3-dehydroabietoxy-2-hydroxy)propyl]-aminoethyl } glycine and sodium N-{N′[( 3-dehydroabietoxy-2-hydroxy)propyl] biaminoethyl} glycine,were prepared from dehydroabietic acid separated fromdisproportionated pine rosin. Their structures were confirmed by spectroscopy and ele-mental analysis. Physicochemical properties such as Krafft point ,critical micelle concen-tration and occupation area per molecule at the air/water surface were determined.Stan-dard enthalpy chang,(△H°m),free energy change(△G°m)and entropy change(△S°m)of the micellization were calculated according to the phase sepera-tion model.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
1995年第2期19-24,共6页
Chemistry and Industry of Forest Products
