Surface Lewis acid-base properties of polymers measured by inverse gas chromatography.
Surface Lewis acid-base properties are significant for polymers materials. The acid constant, K(a) and base constant, K(b) of many polymers were characterized by some researchers with inverse gas chromatography (IGC) in recent years. In this paper, the surface acid-base constants, K(a) and K(b) of 20 kinds of polymers measured by IGC in recent years are summarized and discussed, including seven polymers characterized in this work. After plotting K(b) versus K(a), it is found that the polymers can be encircled by a triangle. They scatter in two regions of the triangle. Four polymers exist in region I. K(b)/K(a) of the polymers in region I are 1.4-2.1. The other polymers exist in region II. Most of the polymers are relative basic materials.
Shi
Baoli
B
Department of Chemistry, College of Science, Northeast Forestry University, Harbin, Heilongjiang 150040, China. shi_baoli@yahoo.com <shi_baoli@yahoo.com>
Zhang
Qianru
Q
Jia
Lina
L
Liu
Yang
Y
Li
Bin
B
D000143:Acids / Q000737:chemistry*; D000468:Alkalies / Q000737:chemistry*; D002849:Chromatography, Gas / Q000379:methods*; D011108:Polymers / Q000737:chemistry*; D013499:Surface Properties
D000143:Acids; D000468:Alkalies; D011108:Polymers