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Characterization of partially hydrolyzed poly(vinyl alcohol). I. Sequence distribution via ¹H and 13 C‐NMR and a reversed‐phased gradient elution HPLC technique
Author(s) -
Budhlall Bridgette M.,
Landfester Katharina,
Nagy Dennis,
Sudol E. David,
Dimonie Victoria L.,
Sagl Dennis,
Klein Andrew,
ElAasser Mohamed S.
Publication year - 2000
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200004)155:1<63::aid-masy63>3.0.co;2-#
Subject(s) - vinyl alcohol , hydrolysis , high performance liquid chromatography , characterization (materials science) , elution , chromatography , sequence (biology) , alcohol , gradient elution , chemistry , materials science , analytical chemistry (journal) , organic chemistry , polymer , nanotechnology , biochemistry
In this investigation, characterization of the micro structure of three different PVA samples in terms of their degrees of blockiness were performed via 125 MHz 13 C‐NMR and 500 MHz ¹H‐NMR measurements. Differences between these PVAs were also discernable by using a high‐performance liquid chromatographic technique employing a reverse‐phase separation mechanism. The results obtained from these studies reveal small but significant differences between the PVAs, which allow a better understanding of the role of these PVAs in the grafting reactions occurring during the emulsion polymerization of vinyl acetate (VAc) using PVA as emulsifier.