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Abstract:The surface energy(γsd) of the dispersive
component of the triblock co polymers, poly(styrene)-poly(ethylene
oxide)-poly(styrene)(PS- PEO-PS),was d etermined by using inverse gas
chromatography(IGC). A series of linear alkanes were used to determine the free
energy of adsorption (ΔGCH2) of a CH2 group in a temperature
range of 70℃-120℃, and
γsd of PS-P EO-PS were calculated. The effects of
the polymer composition and temperature on γsd values were discussed. IG
C data indicated that γsd values of PS-PEO-PS were lower (γdPS-PEO-PS-1=16.99
mJ.m-2,γdPS-PEO-PS-2=17.98
mJ.m-2, 70℃) than that of PEG (
γdPEG=21.74
mJ.m-2,70℃), and increased as the ethy
lene oxide content increased in PS-PEO-PS. The γsd was sensitive to
temperature, decreased sharply with the increase of te mperature. Linear
relationships were obtained between the γsd and temp erature (t,℃), which were γdPS-PEO-PS-1=28.12-0.161 t and γdPS-PEO-PS-2=28.23-0.148t. |
作者简介:邹其超(1967-),男,硕士,讲师,电话:(027)86742729。
作者单位:邹其超(湖北大学化学与材料科学学院分析测试中心, 湖北 武汉 430062) 张玉红(湖北大学化学与材料科学学院分析测试中心, 湖北 武汉 430062) 彭顺金(湖北大学化学与材料科学学院分析测试中心, 湖北 武汉 430062) 方光荣(湖北大学化学与材料科学学院分析测试中心, 湖北 武汉 430062) 参考文献: [1] CHENG Shi-yuan, XU Zu-shun, YUAN Jian-jun. Polymer
Bulletin, 1999,2:31-36 |
原载于《色谱》2001 Vol.19 No.1 P.55-57
http://periodical.wanfangdata.com.cn/periodical/sp/sp2001/0101/0101ml.htm