Two-dimensional Correlation Gel Permeation Chromatography (2D GPC) Study of Aggregate–Aggregate Interactions during Polymerization of 3-(Triethoxysilyl)propyl-terminated Polystyrene

Abstract

ABSTRACT:The three-step polymerization process of a well-defined polymeric silane coupling agent, 3-(triethoxysilyl)propyl-terminated polystyrene, catalyzed by 1 mol/kg KOH-H 2 O, was traced as a function of reaction time using a gel-permeation chromatography (GPC) technique. A set of GPC traces collected during the polymerization was then converted to two-dimensional (2D) correlation maps, by using generalized 2D correlation analysis. The 2D correlation GPC maps reflected the details of the aggregational behavior (in particular, the aggregate-aggregate correlations) in each step of the polymerization, thus demonstrating the promising potential of this technique.

Concentration-resolved 2D correlation gel permeation chromatography study of aggregate–aggregate interactions in the polymerization products of triethoxysilyl-terminated polystyrene silane-coupling agent

“…They may be assigned to solvated monomer (A L ), partially hydrolyzed monomer (A H ) and hydrolyzed monomer (A H ), respectively [27][28][29][30][31]. Furthermore, we have confirmed that the reactivity of A L , A H and A H is greater than that of band A, whose ethoxy groups remain unhydrolyzed, and that reactivity increases in the order of…”

“…However, our previous 2D GPC correlation studies [7,8,10], especially those applied to the reaction-time resolved GPC traces [27][28][29][30][31], have provided direct evidence that three bands are indeed present, at 33.3-33.8, 34.1-34.3, and 34.4-34.6 min. They may be assigned to solvated monomer (A L ), partially hydrolyzed monomer (A H ) and hydrolyzed monomer (A H ), respectively [27][28][29][30][31].…”

The use of alteration analysis in supercritical fluid chromatography to monitor changes in a series of chromatograms

“…Understandably that is quite different from 2DCOR's original field and it shows by the lack of publications in this matter, despite the various advantages of the method. It certainly has a few applications, but has not gained a wide-spread acceptance [3][4][5][6][7][8][9][10][11][12][13][14][15][16]. We also tested 2DCOR in chromatography for a comparison of high-performance liquid chromatography (HPLC) columns [17], but quickly realized the disadvantage.…”